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tests: add imgui example for dx11

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Currently only dx11 is available for testing but plan is to verify correctness of bindings with others.
This commit is contained in:
chyyran 2023-01-28 03:04:21 -05:00
parent 3db4c332eb
commit b5ce7ce30d
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test/capi-tests/** linguist-vendored

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# See http://editorconfig.org to read about the EditorConfig format.
# - In theory automatically supported by VS2017+ and most common IDE or text editors.
# - In practice VS2019-VS2022 stills don't trim trailing whitespaces correctly :(
# - Suggest installing this to trim whitespaces:
# GitHub https://github.com/madskristensen/TrailingWhitespace
# VS2019 https://marketplace.visualstudio.com/items?itemName=MadsKristensen.TrailingWhitespaceVisualizer
# VS2022 https://marketplace.visualstudio.com/items?itemName=MadsKristensen.TrailingWhitespace64
# (in spite of its name doesn't only visualize but also trims)
# - Alternative for older VS2010 to VS2015: https://marketplace.visualstudio.com/items?itemName=EditorConfigTeam.EditorConfig
# top-most EditorConfig file
root = true
# Default settings:
# Use 4 spaces as indentation
[*]
indent_style = space
indent_size = 4
insert_final_newline = true
trim_trailing_whitespace = true
[imstb_*]
indent_size = 3
trim_trailing_whitespace = false
[Makefile]
indent_style = tab
indent_size = 4

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* text=auto
*.c text
*.cpp text
*.h text
*.m text
*.mm text
*.md text
*.txt text
*.html text
*.bat text
*.frag text
*.vert text
*.mkb text
*.icf text
*.sln text eol=crlf
*.vcxproj text eol=crlf
*.vcxproj.filters text eol=crlf
*.natvis text eol=crlf
Makefile text eol=lf
*.sh text eol=lf
*.pbxproj text eol=lf
*.storyboard text eol=lf
*.plist text eol=lf
*.png binary
*.ttf binary
*.lib binary

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## OSX artifacts
.DS_Store
## Dear ImGui artifacts
imgui.ini
## General build artifacts
*.o
*.obj
*.exe
examples/build/*
examples/*/Debug/*
examples/*/Release/*
examples/*/x64/*
## Visual Studio artifacts
.vs
ipch
*.opensdf
*.log
*.pdb
*.ilk
*.user
*.sdf
*.suo
*.VC.db
*.VC.VC.opendb
## Getting files created in JSON/Schemas/Catalog/ from a VS2022 update
JSON/
## Commonly used CMake directories
/build*/
## Xcode artifacts
project.xcworkspace
xcuserdata
## Emscripten artifacts
examples/*.o.tmp
examples/*.out.js
examples/*.out.wasm
examples/example_emscripten_opengl3/web/*
examples/example_emscripten_wgpu/web/*
## JetBrains IDE artifacts
.idea
cmake-build-*
## Unix executables from our example Makefiles
examples/example_glfw_metal/example_glfw_metal
examples/example_glfw_opengl2/example_glfw_opengl2
examples/example_glfw_opengl3/example_glfw_opengl3
examples/example_glut_opengl2/example_glut_opengl2
examples/example_null/example_null
examples/example_sdl_metal/example_sdl_metal
examples/example_sdl_opengl2/example_sdl_opengl2
examples/example_sdl_opengl3/example_sdl_opengl3
examples/example_sdl_sdlrenderer/example_sdl_sdlrenderer

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The MIT License (MIT)
Copyright (c) 2014-2023 Omar Cornut
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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test/capi-tests/imgui/backends/imgui_impl_dx11.cpp vendored Normal file
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// dear imgui: Renderer Backend for DirectX11
// This needs to be used along with a Platform Backend (e.g. Win32)
// Implemented features:
// [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID!
// [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
// 2021-05-19: DirectX11: Replaced direct access to ImDrawCmd::TextureId with a call to ImDrawCmd::GetTexID(). (will become a requirement)
// 2021-02-18: DirectX11: Change blending equation to preserve alpha in output buffer.
// 2019-08-01: DirectX11: Fixed code querying the Geometry Shader state (would generally error with Debug layer enabled).
// 2019-07-21: DirectX11: Backup, clear and restore Geometry Shader is any is bound when calling ImGui_ImplDX10_RenderDrawData. Clearing Hull/Domain/Compute shaders without backup/restore.
// 2019-05-29: DirectX11: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
// 2019-04-30: DirectX11: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
// 2018-12-03: Misc: Added #pragma comment statement to automatically link with d3dcompiler.lib when using D3DCompile().
// 2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
// 2018-08-01: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility.
// 2018-07-13: DirectX11: Fixed unreleased resources in Init and Shutdown functions.
// 2018-06-08: Misc: Extracted imgui_impl_dx11.cpp/.h away from the old combined DX11+Win32 example.
// 2018-06-08: DirectX11: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplDX11_RenderDrawData() in the .h file so you can call it yourself.
// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
// 2016-05-07: DirectX11: Disabling depth-write.
#include "imgui.h"
#include "imgui_impl_dx11.h"
// DirectX
#include <stdio.h>
#include <d3d11.h>
#include <d3dcompiler.h>
#ifdef _MSC_VER
#pragma comment(lib, "d3dcompiler") // Automatically link with d3dcompiler.lib as we are using D3DCompile() below.
#endif
// DirectX11 data
struct ImGui_ImplDX11_Data
{
ID3D11Device* pd3dDevice;
ID3D11DeviceContext* pd3dDeviceContext;
IDXGIFactory* pFactory;
ID3D11Buffer* pVB;
ID3D11Buffer* pIB;
ID3D11VertexShader* pVertexShader;
ID3D11InputLayout* pInputLayout;
ID3D11Buffer* pVertexConstantBuffer;
ID3D11PixelShader* pPixelShader;
ID3D11SamplerState* pFontSampler;
ID3D11ShaderResourceView* pFontTextureView;
ID3D11RasterizerState* pRasterizerState;
ID3D11BlendState* pBlendState;
ID3D11DepthStencilState* pDepthStencilState;
int VertexBufferSize;
int IndexBufferSize;
ImGui_ImplDX11_Data() { memset((void*)this, 0, sizeof(*this)); VertexBufferSize = 5000; IndexBufferSize = 10000; }
};
struct VERTEX_CONSTANT_BUFFER_DX11
{
float mvp[4][4];
};
// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
static ImGui_ImplDX11_Data* ImGui_ImplDX11_GetBackendData()
{
return ImGui::GetCurrentContext() ? (ImGui_ImplDX11_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
}
// Functions
static void ImGui_ImplDX11_SetupRenderState(ImDrawData* draw_data, ID3D11DeviceContext* ctx)
{
ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
// Setup viewport
D3D11_VIEWPORT vp;
memset(&vp, 0, sizeof(D3D11_VIEWPORT));
vp.Width = draw_data->DisplaySize.x;
vp.Height = draw_data->DisplaySize.y;
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
vp.TopLeftX = vp.TopLeftY = 0;
ctx->RSSetViewports(1, &vp);
// Setup shader and vertex buffers
unsigned int stride = sizeof(ImDrawVert);
unsigned int offset = 0;
ctx->IASetInputLayout(bd->pInputLayout);
ctx->IASetVertexBuffers(0, 1, &bd->pVB, &stride, &offset);
ctx->IASetIndexBuffer(bd->pIB, sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT, 0);
ctx->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
ctx->VSSetShader(bd->pVertexShader, nullptr, 0);
ctx->VSSetConstantBuffers(0, 1, &bd->pVertexConstantBuffer);
ctx->PSSetShader(bd->pPixelShader, nullptr, 0);
ctx->PSSetSamplers(0, 1, &bd->pFontSampler);
ctx->GSSetShader(nullptr, nullptr, 0);
ctx->HSSetShader(nullptr, nullptr, 0); // In theory we should backup and restore this as well.. very infrequently used..
ctx->DSSetShader(nullptr, nullptr, 0); // In theory we should backup and restore this as well.. very infrequently used..
ctx->CSSetShader(nullptr, nullptr, 0); // In theory we should backup and restore this as well.. very infrequently used..
// Setup blend state
const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
ctx->OMSetBlendState(bd->pBlendState, blend_factor, 0xffffffff);
ctx->OMSetDepthStencilState(bd->pDepthStencilState, 0);
ctx->RSSetState(bd->pRasterizerState);
}
// Render function
void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
{
// Avoid rendering when minimized
if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
return;
ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
ID3D11DeviceContext* ctx = bd->pd3dDeviceContext;
// Create and grow vertex/index buffers if needed
if (!bd->pVB || bd->VertexBufferSize < draw_data->TotalVtxCount)
{
if (bd->pVB) { bd->pVB->Release(); bd->pVB = nullptr; }
bd->VertexBufferSize = draw_data->TotalVtxCount + 5000;
D3D11_BUFFER_DESC desc;
memset(&desc, 0, sizeof(D3D11_BUFFER_DESC));
desc.Usage = D3D11_USAGE_DYNAMIC;
desc.ByteWidth = bd->VertexBufferSize * sizeof(ImDrawVert);
desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
desc.MiscFlags = 0;
if (bd->pd3dDevice->CreateBuffer(&desc, nullptr, &bd->pVB) < 0)
return;
}
if (!bd->pIB || bd->IndexBufferSize < draw_data->TotalIdxCount)
{
if (bd->pIB) { bd->pIB->Release(); bd->pIB = nullptr; }
bd->IndexBufferSize = draw_data->TotalIdxCount + 10000;
D3D11_BUFFER_DESC desc;
memset(&desc, 0, sizeof(D3D11_BUFFER_DESC));
desc.Usage = D3D11_USAGE_DYNAMIC;
desc.ByteWidth = bd->IndexBufferSize * sizeof(ImDrawIdx);
desc.BindFlags = D3D11_BIND_INDEX_BUFFER;
desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
if (bd->pd3dDevice->CreateBuffer(&desc, nullptr, &bd->pIB) < 0)
return;
}
// Upload vertex/index data into a single contiguous GPU buffer
D3D11_MAPPED_SUBRESOURCE vtx_resource, idx_resource;
if (ctx->Map(bd->pVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &vtx_resource) != S_OK)
return;
if (ctx->Map(bd->pIB, 0, D3D11_MAP_WRITE_DISCARD, 0, &idx_resource) != S_OK)
return;
ImDrawVert* vtx_dst = (ImDrawVert*)vtx_resource.pData;
ImDrawIdx* idx_dst = (ImDrawIdx*)idx_resource.pData;
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* cmd_list = draw_data->CmdLists[n];
memcpy(vtx_dst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
vtx_dst += cmd_list->VtxBuffer.Size;
idx_dst += cmd_list->IdxBuffer.Size;
}
ctx->Unmap(bd->pVB, 0);
ctx->Unmap(bd->pIB, 0);
// Setup orthographic projection matrix into our constant buffer
// Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
{
D3D11_MAPPED_SUBRESOURCE mapped_resource;
if (ctx->Map(bd->pVertexConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped_resource) != S_OK)
return;
VERTEX_CONSTANT_BUFFER_DX11* constant_buffer = (VERTEX_CONSTANT_BUFFER_DX11*)mapped_resource.pData;
float L = draw_data->DisplayPos.x;
float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
float T = draw_data->DisplayPos.y;
float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
float mvp[4][4] =
{
{ 2.0f/(R-L), 0.0f, 0.0f, 0.0f },
{ 0.0f, 2.0f/(T-B), 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.5f, 0.0f },
{ (R+L)/(L-R), (T+B)/(B-T), 0.5f, 1.0f },
};
memcpy(&constant_buffer->mvp, mvp, sizeof(mvp));
ctx->Unmap(bd->pVertexConstantBuffer, 0);
}
// Backup DX state that will be modified to restore it afterwards (unfortunately this is very ugly looking and verbose. Close your eyes!)
struct BACKUP_DX11_STATE
{
UINT ScissorRectsCount, ViewportsCount;
D3D11_RECT ScissorRects[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
D3D11_VIEWPORT Viewports[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
ID3D11RasterizerState* RS;
ID3D11BlendState* BlendState;
FLOAT BlendFactor[4];
UINT SampleMask;
UINT StencilRef;
ID3D11DepthStencilState* DepthStencilState;
ID3D11ShaderResourceView* PSShaderResource;
ID3D11SamplerState* PSSampler;
ID3D11PixelShader* PS;
ID3D11VertexShader* VS;
ID3D11GeometryShader* GS;
UINT PSInstancesCount, VSInstancesCount, GSInstancesCount;
ID3D11ClassInstance *PSInstances[256], *VSInstances[256], *GSInstances[256]; // 256 is max according to PSSetShader documentation
D3D11_PRIMITIVE_TOPOLOGY PrimitiveTopology;
ID3D11Buffer* IndexBuffer, *VertexBuffer, *VSConstantBuffer;
UINT IndexBufferOffset, VertexBufferStride, VertexBufferOffset;
DXGI_FORMAT IndexBufferFormat;
ID3D11InputLayout* InputLayout;
};
BACKUP_DX11_STATE old = {};
old.ScissorRectsCount = old.ViewportsCount = D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE;
ctx->RSGetScissorRects(&old.ScissorRectsCount, old.ScissorRects);
ctx->RSGetViewports(&old.ViewportsCount, old.Viewports);
ctx->RSGetState(&old.RS);
ctx->OMGetBlendState(&old.BlendState, old.BlendFactor, &old.SampleMask);
ctx->OMGetDepthStencilState(&old.DepthStencilState, &old.StencilRef);
ctx->PSGetShaderResources(0, 1, &old.PSShaderResource);
ctx->PSGetSamplers(0, 1, &old.PSSampler);
old.PSInstancesCount = old.VSInstancesCount = old.GSInstancesCount = 256;
ctx->PSGetShader(&old.PS, old.PSInstances, &old.PSInstancesCount);
ctx->VSGetShader(&old.VS, old.VSInstances, &old.VSInstancesCount);
ctx->VSGetConstantBuffers(0, 1, &old.VSConstantBuffer);
ctx->GSGetShader(&old.GS, old.GSInstances, &old.GSInstancesCount);
ctx->IAGetPrimitiveTopology(&old.PrimitiveTopology);
ctx->IAGetIndexBuffer(&old.IndexBuffer, &old.IndexBufferFormat, &old.IndexBufferOffset);
ctx->IAGetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset);
ctx->IAGetInputLayout(&old.InputLayout);
// Setup desired DX state
ImGui_ImplDX11_SetupRenderState(draw_data, ctx);
// Render command lists
// (Because we merged all buffers into a single one, we maintain our own offset into them)
int global_idx_offset = 0;
int global_vtx_offset = 0;
ImVec2 clip_off = draw_data->DisplayPos;
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* cmd_list = draw_data->CmdLists[n];
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
{
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
if (pcmd->UserCallback != nullptr)
{
// User callback, registered via ImDrawList::AddCallback()
// (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
ImGui_ImplDX11_SetupRenderState(draw_data, ctx);
else
pcmd->UserCallback(cmd_list, pcmd);
}
else
{
// Project scissor/clipping rectangles into framebuffer space
ImVec2 clip_min(pcmd->ClipRect.x - clip_off.x, pcmd->ClipRect.y - clip_off.y);
ImVec2 clip_max(pcmd->ClipRect.z - clip_off.x, pcmd->ClipRect.w - clip_off.y);
if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
continue;
// Apply scissor/clipping rectangle
const D3D11_RECT r = { (LONG)clip_min.x, (LONG)clip_min.y, (LONG)clip_max.x, (LONG)clip_max.y };
ctx->RSSetScissorRects(1, &r);
// Bind texture, Draw
ID3D11ShaderResourceView* texture_srv = (ID3D11ShaderResourceView*)pcmd->GetTexID();
ctx->PSSetShaderResources(0, 1, &texture_srv);
ctx->DrawIndexed(pcmd->ElemCount, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset);
}
}
global_idx_offset += cmd_list->IdxBuffer.Size;
global_vtx_offset += cmd_list->VtxBuffer.Size;
}
// Restore modified DX state
ctx->RSSetScissorRects(old.ScissorRectsCount, old.ScissorRects);
ctx->RSSetViewports(old.ViewportsCount, old.Viewports);
ctx->RSSetState(old.RS); if (old.RS) old.RS->Release();
ctx->OMSetBlendState(old.BlendState, old.BlendFactor, old.SampleMask); if (old.BlendState) old.BlendState->Release();
ctx->OMSetDepthStencilState(old.DepthStencilState, old.StencilRef); if (old.DepthStencilState) old.DepthStencilState->Release();
ctx->PSSetShaderResources(0, 1, &old.PSShaderResource); if (old.PSShaderResource) old.PSShaderResource->Release();
ctx->PSSetSamplers(0, 1, &old.PSSampler); if (old.PSSampler) old.PSSampler->Release();
ctx->PSSetShader(old.PS, old.PSInstances, old.PSInstancesCount); if (old.PS) old.PS->Release();
for (UINT i = 0; i < old.PSInstancesCount; i++) if (old.PSInstances[i]) old.PSInstances[i]->Release();
ctx->VSSetShader(old.VS, old.VSInstances, old.VSInstancesCount); if (old.VS) old.VS->Release();
ctx->VSSetConstantBuffers(0, 1, &old.VSConstantBuffer); if (old.VSConstantBuffer) old.VSConstantBuffer->Release();
ctx->GSSetShader(old.GS, old.GSInstances, old.GSInstancesCount); if (old.GS) old.GS->Release();
for (UINT i = 0; i < old.VSInstancesCount; i++) if (old.VSInstances[i]) old.VSInstances[i]->Release();
ctx->IASetPrimitiveTopology(old.PrimitiveTopology);
ctx->IASetIndexBuffer(old.IndexBuffer, old.IndexBufferFormat, old.IndexBufferOffset); if (old.IndexBuffer) old.IndexBuffer->Release();
ctx->IASetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset); if (old.VertexBuffer) old.VertexBuffer->Release();
ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release();
}
static void ImGui_ImplDX11_CreateFontsTexture()
{
// Build texture atlas
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
unsigned char* pixels;
int width, height;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
// Upload texture to graphics system
{
D3D11_TEXTURE2D_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.Width = width;
desc.Height = height;
desc.MipLevels = 1;
desc.ArraySize = 1;
desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
desc.SampleDesc.Count = 1;
desc.Usage = D3D11_USAGE_DEFAULT;
desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
desc.CPUAccessFlags = 0;
ID3D11Texture2D* pTexture = nullptr;
D3D11_SUBRESOURCE_DATA subResource;
subResource.pSysMem = pixels;
subResource.SysMemPitch = desc.Width * 4;
subResource.SysMemSlicePitch = 0;
bd->pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
IM_ASSERT(pTexture != nullptr);
// Create texture view
D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
ZeroMemory(&srvDesc, sizeof(srvDesc));
srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
srvDesc.Texture2D.MipLevels = desc.MipLevels;
srvDesc.Texture2D.MostDetailedMip = 0;
bd->pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &bd->pFontTextureView);
pTexture->Release();
}
// Store our identifier
io.Fonts->SetTexID((ImTextureID)bd->pFontTextureView);
// Create texture sampler
// (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
{
D3D11_SAMPLER_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
desc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP;
desc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP;
desc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
desc.MipLODBias = 0.f;
desc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;
desc.MinLOD = 0.f;
desc.MaxLOD = 0.f;
bd->pd3dDevice->CreateSamplerState(&desc, &bd->pFontSampler);
}
}
bool ImGui_ImplDX11_CreateDeviceObjects()
{
ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
if (!bd->pd3dDevice)
return false;
if (bd->pFontSampler)
ImGui_ImplDX11_InvalidateDeviceObjects();
// By using D3DCompile() from <d3dcompiler.h> / d3dcompiler.lib, we introduce a dependency to a given version of d3dcompiler_XX.dll (see D3DCOMPILER_DLL_A)
// If you would like to use this DX11 sample code but remove this dependency you can:
// 1) compile once, save the compiled shader blobs into a file or source code and pass them to CreateVertexShader()/CreatePixelShader() [preferred solution]
// 2) use code to detect any version of the DLL and grab a pointer to D3DCompile from the DLL.
// See https://github.com/ocornut/imgui/pull/638 for sources and details.
// Create the vertex shader
{
static const char* vertexShader =
"cbuffer vertexBuffer : register(b0) \
{\
float4x4 ProjectionMatrix; \
};\
struct VS_INPUT\
{\
float2 pos : POSITION;\
float4 col : COLOR0;\
float2 uv : TEXCOORD0;\
};\
\
struct PS_INPUT\
{\
float4 pos : SV_POSITION;\
float4 col : COLOR0;\
float2 uv : TEXCOORD0;\
};\
\
PS_INPUT main(VS_INPUT input)\
{\
PS_INPUT output;\
output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.f, 1.f));\
output.col = input.col;\
output.uv = input.uv;\
return output;\
}";
ID3DBlob* vertexShaderBlob;
if (FAILED(D3DCompile(vertexShader, strlen(vertexShader), nullptr, nullptr, nullptr, "main", "vs_4_0", 0, 0, &vertexShaderBlob, nullptr)))
return false; // NB: Pass ID3DBlob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
if (bd->pd3dDevice->CreateVertexShader(vertexShaderBlob->GetBufferPointer(), vertexShaderBlob->GetBufferSize(), nullptr, &bd->pVertexShader) != S_OK)
{
vertexShaderBlob->Release();
return false;
}
// Create the input layout
D3D11_INPUT_ELEMENT_DESC local_layout[] =
{
{ "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (UINT)IM_OFFSETOF(ImDrawVert, pos), D3D11_INPUT_PER_VERTEX_DATA, 0 },
{ "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (UINT)IM_OFFSETOF(ImDrawVert, uv), D3D11_INPUT_PER_VERTEX_DATA, 0 },
{ "COLOR", 0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (UINT)IM_OFFSETOF(ImDrawVert, col), D3D11_INPUT_PER_VERTEX_DATA, 0 },
};
if (bd->pd3dDevice->CreateInputLayout(local_layout, 3, vertexShaderBlob->GetBufferPointer(), vertexShaderBlob->GetBufferSize(), &bd->pInputLayout) != S_OK)
{
vertexShaderBlob->Release();
return false;
}
vertexShaderBlob->Release();
// Create the constant buffer
{
D3D11_BUFFER_DESC desc;
desc.ByteWidth = sizeof(VERTEX_CONSTANT_BUFFER_DX11);
desc.Usage = D3D11_USAGE_DYNAMIC;
desc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
desc.MiscFlags = 0;
bd->pd3dDevice->CreateBuffer(&desc, nullptr, &bd->pVertexConstantBuffer);
}
}
// Create the pixel shader
{
static const char* pixelShader =
"struct PS_INPUT\
{\
float4 pos : SV_POSITION;\
float4 col : COLOR0;\
float2 uv : TEXCOORD0;\
};\
sampler sampler0;\
Texture2D texture0;\
\
float4 main(PS_INPUT input) : SV_Target\
{\
float4 out_col = input.col * texture0.Sample(sampler0, input.uv); \
return out_col; \
}";
ID3DBlob* pixelShaderBlob;
if (FAILED(D3DCompile(pixelShader, strlen(pixelShader), nullptr, nullptr, nullptr, "main", "ps_4_0", 0, 0, &pixelShaderBlob, nullptr)))
return false; // NB: Pass ID3DBlob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
if (bd->pd3dDevice->CreatePixelShader(pixelShaderBlob->GetBufferPointer(), pixelShaderBlob->GetBufferSize(), nullptr, &bd->pPixelShader) != S_OK)
{
pixelShaderBlob->Release();
return false;
}
pixelShaderBlob->Release();
}
// Create the blending setup
{
D3D11_BLEND_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.AlphaToCoverageEnable = false;
desc.RenderTarget[0].BlendEnable = true;
desc.RenderTarget[0].SrcBlend = D3D11_BLEND_SRC_ALPHA;
desc.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA;
desc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD;
desc.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_ONE;
desc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_INV_SRC_ALPHA;
desc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
desc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
bd->pd3dDevice->CreateBlendState(&desc, &bd->pBlendState);
}
// Create the rasterizer state
{
D3D11_RASTERIZER_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.FillMode = D3D11_FILL_SOLID;
desc.CullMode = D3D11_CULL_NONE;
desc.ScissorEnable = true;
desc.DepthClipEnable = true;
bd->pd3dDevice->CreateRasterizerState(&desc, &bd->pRasterizerState);
}
// Create depth-stencil State
{
D3D11_DEPTH_STENCIL_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.DepthEnable = false;
desc.DepthWriteMask = D3D11_DEPTH_WRITE_MASK_ALL;
desc.DepthFunc = D3D11_COMPARISON_ALWAYS;
desc.StencilEnable = false;
desc.FrontFace.StencilFailOp = desc.FrontFace.StencilDepthFailOp = desc.FrontFace.StencilPassOp = D3D11_STENCIL_OP_KEEP;
desc.FrontFace.StencilFunc = D3D11_COMPARISON_ALWAYS;
desc.BackFace = desc.FrontFace;
bd->pd3dDevice->CreateDepthStencilState(&desc, &bd->pDepthStencilState);
}
ImGui_ImplDX11_CreateFontsTexture();
return true;
}
void ImGui_ImplDX11_InvalidateDeviceObjects()
{
ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
if (!bd->pd3dDevice)
return;
if (bd->pFontSampler) { bd->pFontSampler->Release(); bd->pFontSampler = nullptr; }
if (bd->pFontTextureView) { bd->pFontTextureView->Release(); bd->pFontTextureView = nullptr; ImGui::GetIO().Fonts->SetTexID(nullptr); } // We copied data->pFontTextureView to io.Fonts->TexID so let's clear that as well.
if (bd->pIB) { bd->pIB->Release(); bd->pIB = nullptr; }
if (bd->pVB) { bd->pVB->Release(); bd->pVB = nullptr; }
if (bd->pBlendState) { bd->pBlendState->Release(); bd->pBlendState = nullptr; }
if (bd->pDepthStencilState) { bd->pDepthStencilState->Release(); bd->pDepthStencilState = nullptr; }
if (bd->pRasterizerState) { bd->pRasterizerState->Release(); bd->pRasterizerState = nullptr; }
if (bd->pPixelShader) { bd->pPixelShader->Release(); bd->pPixelShader = nullptr; }
if (bd->pVertexConstantBuffer) { bd->pVertexConstantBuffer->Release(); bd->pVertexConstantBuffer = nullptr; }
if (bd->pInputLayout) { bd->pInputLayout->Release(); bd->pInputLayout = nullptr; }
if (bd->pVertexShader) { bd->pVertexShader->Release(); bd->pVertexShader = nullptr; }
}
bool ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_context)
{
ImGuiIO& io = ImGui::GetIO();
IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
// Setup backend capabilities flags
ImGui_ImplDX11_Data* bd = IM_NEW(ImGui_ImplDX11_Data)();
io.BackendRendererUserData = (void*)bd;
io.BackendRendererName = "imgui_impl_dx11";
io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
// Get factory from device
IDXGIDevice* pDXGIDevice = nullptr;
IDXGIAdapter* pDXGIAdapter = nullptr;
IDXGIFactory* pFactory = nullptr;
if (device->QueryInterface(IID_PPV_ARGS(&pDXGIDevice)) == S_OK)
if (pDXGIDevice->GetParent(IID_PPV_ARGS(&pDXGIAdapter)) == S_OK)
if (pDXGIAdapter->GetParent(IID_PPV_ARGS(&pFactory)) == S_OK)
{
bd->pd3dDevice = device;
bd->pd3dDeviceContext = device_context;
bd->pFactory = pFactory;
}
if (pDXGIDevice) pDXGIDevice->Release();
if (pDXGIAdapter) pDXGIAdapter->Release();
bd->pd3dDevice->AddRef();
bd->pd3dDeviceContext->AddRef();
return true;
}
void ImGui_ImplDX11_Shutdown()
{
ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplDX11_InvalidateDeviceObjects();
if (bd->pFactory) { bd->pFactory->Release(); }
if (bd->pd3dDevice) { bd->pd3dDevice->Release(); }
if (bd->pd3dDeviceContext) { bd->pd3dDeviceContext->Release(); }
io.BackendRendererName = nullptr;
io.BackendRendererUserData = nullptr;
IM_DELETE(bd);
}
void ImGui_ImplDX11_NewFrame()
{
ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData();
IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplDX11_Init()?");
if (!bd->pFontSampler)
ImGui_ImplDX11_CreateDeviceObjects();
}

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// dear imgui: Renderer Backend for DirectX11
// This needs to be used along with a Platform Backend (e.g. Win32)
// Implemented features:
// [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID!
// [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
#pragma once
#include "imgui.h" // IMGUI_IMPL_API
struct ID3D11Device;
struct ID3D11DeviceContext;
IMGUI_IMPL_API bool ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_context);
IMGUI_IMPL_API void ImGui_ImplDX11_Shutdown();
IMGUI_IMPL_API void ImGui_ImplDX11_NewFrame();
IMGUI_IMPL_API void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data);
// Use if you want to reset your rendering device without losing Dear ImGui state.
IMGUI_IMPL_API void ImGui_ImplDX11_InvalidateDeviceObjects();
IMGUI_IMPL_API bool ImGui_ImplDX11_CreateDeviceObjects();

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// dear imgui: Renderer Backend for DirectX12
// This needs to be used along with a Platform Backend (e.g. Win32)
// Implemented features:
// [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as ImTextureID. Read the FAQ about ImTextureID!
// [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
// Important: to compile on 32-bit systems, this backend requires code to be compiled with '#define ImTextureID ImU64'.
// This is because we need ImTextureID to carry a 64-bit value and by default ImTextureID is defined as void*.
// To build this on 32-bit systems:
// - [Solution 1] IDE/msbuild: in "Properties/C++/Preprocessor Definitions" add 'ImTextureID=ImU64' (this is what we do in the 'example_win32_direct12/example_win32_direct12.vcxproj' project file)
// - [Solution 2] IDE/msbuild: in "Properties/C++/Preprocessor Definitions" add 'IMGUI_USER_CONFIG="my_imgui_config.h"' and inside 'my_imgui_config.h' add '#define ImTextureID ImU64' and as many other options as you like.
// - [Solution 3] IDE/msbuild: edit imconfig.h and add '#define ImTextureID ImU64' (prefer solution 2 to create your own config file!)
// - [Solution 4] command-line: add '/D ImTextureID=ImU64' to your cl.exe command-line (this is what we do in the example_win32_direct12/build_win32.bat file)
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
// 2021-05-19: DirectX12: Replaced direct access to ImDrawCmd::TextureId with a call to ImDrawCmd::GetTexID(). (will become a requirement)
// 2021-02-18: DirectX12: Change blending equation to preserve alpha in output buffer.
// 2021-01-11: DirectX12: Improve Windows 7 compatibility (for D3D12On7) by loading d3d12.dll dynamically.
// 2020-09-16: DirectX12: Avoid rendering calls with zero-sized scissor rectangle since it generates a validation layer warning.
// 2020-09-08: DirectX12: Clarified support for building on 32-bit systems by redefining ImTextureID.
// 2019-10-18: DirectX12: *BREAKING CHANGE* Added extra ID3D12DescriptorHeap parameter to ImGui_ImplDX12_Init() function.
// 2019-05-29: DirectX12: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
// 2019-04-30: DirectX12: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
// 2019-03-29: Misc: Various minor tidying up.
// 2018-12-03: Misc: Added #pragma comment statement to automatically link with d3dcompiler.lib when using D3DCompile().
// 2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
// 2018-06-12: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from NewFrame() to RenderDrawData().
// 2018-06-08: Misc: Extracted imgui_impl_dx12.cpp/.h away from the old combined DX12+Win32 example.
// 2018-06-08: DirectX12: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle (to ease support for future multi-viewport).
// 2018-02-22: Merged into master with all Win32 code synchronized to other examples.
#include "imgui.h"
#include "imgui_impl_dx12.h"
// DirectX
#include <d3d12.h>
#include <dxgi1_4.h>
#include <d3dcompiler.h>
#ifdef _MSC_VER
#pragma comment(lib, "d3dcompiler") // Automatically link with d3dcompiler.lib as we are using D3DCompile() below.
#endif
// DirectX data
struct ImGui_ImplDX12_RenderBuffers
{
ID3D12Resource* IndexBuffer;
ID3D12Resource* VertexBuffer;
int IndexBufferSize;
int VertexBufferSize;
};
struct ImGui_ImplDX12_Data
{
ID3D12Device* pd3dDevice;
ID3D12RootSignature* pRootSignature;
ID3D12PipelineState* pPipelineState;
DXGI_FORMAT RTVFormat;
ID3D12Resource* pFontTextureResource;
D3D12_CPU_DESCRIPTOR_HANDLE hFontSrvCpuDescHandle;
D3D12_GPU_DESCRIPTOR_HANDLE hFontSrvGpuDescHandle;
ImGui_ImplDX12_RenderBuffers* pFrameResources;
UINT numFramesInFlight;
UINT frameIndex;
ImGui_ImplDX12_Data() { memset((void*)this, 0, sizeof(*this)); frameIndex = UINT_MAX; }
};
struct VERTEX_CONSTANT_BUFFER_DX12
{
float mvp[4][4];
};
// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
static ImGui_ImplDX12_Data* ImGui_ImplDX12_GetBackendData()
{
return ImGui::GetCurrentContext() ? (ImGui_ImplDX12_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
}
// Functions
static void ImGui_ImplDX12_SetupRenderState(ImDrawData* draw_data, ID3D12GraphicsCommandList* ctx, ImGui_ImplDX12_RenderBuffers* fr)
{
ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();
// Setup orthographic projection matrix into our constant buffer
// Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right).
VERTEX_CONSTANT_BUFFER_DX12 vertex_constant_buffer;
{
float L = draw_data->DisplayPos.x;
float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
float T = draw_data->DisplayPos.y;
float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
float mvp[4][4] =
{
{ 2.0f/(R-L), 0.0f, 0.0f, 0.0f },
{ 0.0f, 2.0f/(T-B), 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.5f, 0.0f },
{ (R+L)/(L-R), (T+B)/(B-T), 0.5f, 1.0f },
};
memcpy(&vertex_constant_buffer.mvp, mvp, sizeof(mvp));
}
// Setup viewport
D3D12_VIEWPORT vp;
memset(&vp, 0, sizeof(D3D12_VIEWPORT));
vp.Width = draw_data->DisplaySize.x;
vp.Height = draw_data->DisplaySize.y;
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
vp.TopLeftX = vp.TopLeftY = 0.0f;
ctx->RSSetViewports(1, &vp);
// Bind shader and vertex buffers
unsigned int stride = sizeof(ImDrawVert);
unsigned int offset = 0;
D3D12_VERTEX_BUFFER_VIEW vbv;
memset(&vbv, 0, sizeof(D3D12_VERTEX_BUFFER_VIEW));
vbv.BufferLocation = fr->VertexBuffer->GetGPUVirtualAddress() + offset;
vbv.SizeInBytes = fr->VertexBufferSize * stride;
vbv.StrideInBytes = stride;
ctx->IASetVertexBuffers(0, 1, &vbv);
D3D12_INDEX_BUFFER_VIEW ibv;
memset(&ibv, 0, sizeof(D3D12_INDEX_BUFFER_VIEW));
ibv.BufferLocation = fr->IndexBuffer->GetGPUVirtualAddress();
ibv.SizeInBytes = fr->IndexBufferSize * sizeof(ImDrawIdx);
ibv.Format = sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT;
ctx->IASetIndexBuffer(&ibv);
ctx->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
ctx->SetPipelineState(bd->pPipelineState);
ctx->SetGraphicsRootSignature(bd->pRootSignature);
ctx->SetGraphicsRoot32BitConstants(0, 16, &vertex_constant_buffer, 0);
// Setup blend factor
const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
ctx->OMSetBlendFactor(blend_factor);
}
template<typename T>
static inline void SafeRelease(T*& res)
{
if (res)
res->Release();
res = nullptr;
}
// Render function
void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandList* ctx)
{
// Avoid rendering when minimized
if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
return;
// FIXME: I'm assuming that this only gets called once per frame!
// If not, we can't just re-allocate the IB or VB, we'll have to do a proper allocator.
ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();
bd->frameIndex = bd->frameIndex + 1;
ImGui_ImplDX12_RenderBuffers* fr = &bd->pFrameResources[bd->frameIndex % bd->numFramesInFlight];
// Create and grow vertex/index buffers if needed
if (fr->VertexBuffer == nullptr || fr->VertexBufferSize < draw_data->TotalVtxCount)
{
SafeRelease(fr->VertexBuffer);
fr->VertexBufferSize = draw_data->TotalVtxCount + 5000;
D3D12_HEAP_PROPERTIES props;
memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
props.Type = D3D12_HEAP_TYPE_UPLOAD;
props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
D3D12_RESOURCE_DESC desc;
memset(&desc, 0, sizeof(D3D12_RESOURCE_DESC));
desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
desc.Width = fr->VertexBufferSize * sizeof(ImDrawVert);
desc.Height = 1;
desc.DepthOrArraySize = 1;
desc.MipLevels = 1;
desc.Format = DXGI_FORMAT_UNKNOWN;
desc.SampleDesc.Count = 1;
desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
desc.Flags = D3D12_RESOURCE_FLAG_NONE;
if (bd->pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc, D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS(&fr->VertexBuffer)) < 0)
return;
}
if (fr->IndexBuffer == nullptr || fr->IndexBufferSize < draw_data->TotalIdxCount)
{
SafeRelease(fr->IndexBuffer);
fr->IndexBufferSize = draw_data->TotalIdxCount + 10000;
D3D12_HEAP_PROPERTIES props;
memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
props.Type = D3D12_HEAP_TYPE_UPLOAD;
props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
D3D12_RESOURCE_DESC desc;
memset(&desc, 0, sizeof(D3D12_RESOURCE_DESC));
desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
desc.Width = fr->IndexBufferSize * sizeof(ImDrawIdx);
desc.Height = 1;
desc.DepthOrArraySize = 1;
desc.MipLevels = 1;
desc.Format = DXGI_FORMAT_UNKNOWN;
desc.SampleDesc.Count = 1;
desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
desc.Flags = D3D12_RESOURCE_FLAG_NONE;
if (bd->pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc, D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS(&fr->IndexBuffer)) < 0)
return;
}
// Upload vertex/index data into a single contiguous GPU buffer
void* vtx_resource, *idx_resource;
D3D12_RANGE range;
memset(&range, 0, sizeof(D3D12_RANGE));
if (fr->VertexBuffer->Map(0, &range, &vtx_resource) != S_OK)
return;
if (fr->IndexBuffer->Map(0, &range, &idx_resource) != S_OK)
return;
ImDrawVert* vtx_dst = (ImDrawVert*)vtx_resource;
ImDrawIdx* idx_dst = (ImDrawIdx*)idx_resource;
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* cmd_list = draw_data->CmdLists[n];
memcpy(vtx_dst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
vtx_dst += cmd_list->VtxBuffer.Size;
idx_dst += cmd_list->IdxBuffer.Size;
}
fr->VertexBuffer->Unmap(0, &range);
fr->IndexBuffer->Unmap(0, &range);
// Setup desired DX state
ImGui_ImplDX12_SetupRenderState(draw_data, ctx, fr);
// Render command lists
// (Because we merged all buffers into a single one, we maintain our own offset into them)
int global_vtx_offset = 0;
int global_idx_offset = 0;
ImVec2 clip_off = draw_data->DisplayPos;
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* cmd_list = draw_data->CmdLists[n];
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
{
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
if (pcmd->UserCallback != nullptr)
{
// User callback, registered via ImDrawList::AddCallback()
// (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
ImGui_ImplDX12_SetupRenderState(draw_data, ctx, fr);
else
pcmd->UserCallback(cmd_list, pcmd);
}
else
{
// Project scissor/clipping rectangles into framebuffer space
ImVec2 clip_min(pcmd->ClipRect.x - clip_off.x, pcmd->ClipRect.y - clip_off.y);
ImVec2 clip_max(pcmd->ClipRect.z - clip_off.x, pcmd->ClipRect.w - clip_off.y);
if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
continue;
// Apply Scissor/clipping rectangle, Bind texture, Draw
const D3D12_RECT r = { (LONG)clip_min.x, (LONG)clip_min.y, (LONG)clip_max.x, (LONG)clip_max.y };
D3D12_GPU_DESCRIPTOR_HANDLE texture_handle = {};
texture_handle.ptr = (UINT64)pcmd->GetTexID();
ctx->SetGraphicsRootDescriptorTable(1, texture_handle);
ctx->RSSetScissorRects(1, &r);
ctx->DrawIndexedInstanced(pcmd->ElemCount, 1, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset, 0);
}
}
global_idx_offset += cmd_list->IdxBuffer.Size;
global_vtx_offset += cmd_list->VtxBuffer.Size;
}
}
static void ImGui_ImplDX12_CreateFontsTexture()
{
// Build texture atlas
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();
unsigned char* pixels;
int width, height;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
// Upload texture to graphics system
{
D3D12_HEAP_PROPERTIES props;
memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
props.Type = D3D12_HEAP_TYPE_DEFAULT;
props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
D3D12_RESOURCE_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D;
desc.Alignment = 0;
desc.Width = width;
desc.Height = height;
desc.DepthOrArraySize = 1;
desc.MipLevels = 1;
desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
desc.SampleDesc.Count = 1;
desc.SampleDesc.Quality = 0;
desc.Layout = D3D12_TEXTURE_LAYOUT_UNKNOWN;
desc.Flags = D3D12_RESOURCE_FLAG_NONE;
ID3D12Resource* pTexture = nullptr;
bd->pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc,
D3D12_RESOURCE_STATE_COPY_DEST, nullptr, IID_PPV_ARGS(&pTexture));
UINT uploadPitch = (width * 4 + D3D12_TEXTURE_DATA_PITCH_ALIGNMENT - 1u) & ~(D3D12_TEXTURE_DATA_PITCH_ALIGNMENT - 1u);
UINT uploadSize = height * uploadPitch;
desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
desc.Alignment = 0;
desc.Width = uploadSize;
desc.Height = 1;
desc.DepthOrArraySize = 1;
desc.MipLevels = 1;
desc.Format = DXGI_FORMAT_UNKNOWN;
desc.SampleDesc.Count = 1;
desc.SampleDesc.Quality = 0;
desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
desc.Flags = D3D12_RESOURCE_FLAG_NONE;
props.Type = D3D12_HEAP_TYPE_UPLOAD;
props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
ID3D12Resource* uploadBuffer = nullptr;
HRESULT hr = bd->pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc,
D3D12_RESOURCE_STATE_GENERIC_READ, nullptr, IID_PPV_ARGS(&uploadBuffer));
IM_ASSERT(SUCCEEDED(hr));
void* mapped = nullptr;
D3D12_RANGE range = { 0, uploadSize };
hr = uploadBuffer->Map(0, &range, &mapped);
IM_ASSERT(SUCCEEDED(hr));
for (int y = 0; y < height; y++)
memcpy((void*) ((uintptr_t) mapped + y * uploadPitch), pixels + y * width * 4, width * 4);
uploadBuffer->Unmap(0, &range);
D3D12_TEXTURE_COPY_LOCATION srcLocation = {};
srcLocation.pResource = uploadBuffer;
srcLocation.Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT;
srcLocation.PlacedFootprint.Footprint.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
srcLocation.PlacedFootprint.Footprint.Width = width;
srcLocation.PlacedFootprint.Footprint.Height = height;
srcLocation.PlacedFootprint.Footprint.Depth = 1;
srcLocation.PlacedFootprint.Footprint.RowPitch = uploadPitch;
D3D12_TEXTURE_COPY_LOCATION dstLocation = {};
dstLocation.pResource = pTexture;
dstLocation.Type = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX;
dstLocation.SubresourceIndex = 0;
D3D12_RESOURCE_BARRIER barrier = {};
barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
barrier.Transition.pResource = pTexture;
barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_COPY_DEST;
barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE;
ID3D12Fence* fence = nullptr;
hr = bd->pd3dDevice->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&fence));
IM_ASSERT(SUCCEEDED(hr));
HANDLE event = CreateEvent(0, 0, 0, 0);
IM_ASSERT(event != nullptr);
D3D12_COMMAND_QUEUE_DESC queueDesc = {};
queueDesc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
queueDesc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
queueDesc.NodeMask = 1;
ID3D12CommandQueue* cmdQueue = nullptr;
hr = bd->pd3dDevice->CreateCommandQueue(&queueDesc, IID_PPV_ARGS(&cmdQueue));
IM_ASSERT(SUCCEEDED(hr));
ID3D12CommandAllocator* cmdAlloc = nullptr;
hr = bd->pd3dDevice->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&cmdAlloc));
IM_ASSERT(SUCCEEDED(hr));
ID3D12GraphicsCommandList* cmdList = nullptr;
hr = bd->pd3dDevice->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, cmdAlloc, nullptr, IID_PPV_ARGS(&cmdList));
IM_ASSERT(SUCCEEDED(hr));
cmdList->CopyTextureRegion(&dstLocation, 0, 0, 0, &srcLocation, nullptr);
cmdList->ResourceBarrier(1, &barrier);
hr = cmdList->Close();
IM_ASSERT(SUCCEEDED(hr));
cmdQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*)&cmdList);
hr = cmdQueue->Signal(fence, 1);
IM_ASSERT(SUCCEEDED(hr));
fence->SetEventOnCompletion(1, event);
WaitForSingleObject(event, INFINITE);
cmdList->Release();
cmdAlloc->Release();
cmdQueue->Release();
CloseHandle(event);
fence->Release();
uploadBuffer->Release();
// Create texture view
D3D12_SHADER_RESOURCE_VIEW_DESC srvDesc;
ZeroMemory(&srvDesc, sizeof(srvDesc));
srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
srvDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
srvDesc.Texture2D.MipLevels = desc.MipLevels;
srvDesc.Texture2D.MostDetailedMip = 0;
srvDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
bd->pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, bd->hFontSrvCpuDescHandle);
SafeRelease(bd->pFontTextureResource);
bd->pFontTextureResource = pTexture;
}
// Store our identifier
// READ THIS IF THE STATIC_ASSERT() TRIGGERS:
// - Important: to compile on 32-bit systems, this backend requires code to be compiled with '#define ImTextureID ImU64'.
// - This is because we need ImTextureID to carry a 64-bit value and by default ImTextureID is defined as void*.
// [Solution 1] IDE/msbuild: in "Properties/C++/Preprocessor Definitions" add 'ImTextureID=ImU64' (this is what we do in the 'example_win32_direct12/example_win32_direct12.vcxproj' project file)
// [Solution 2] IDE/msbuild: in "Properties/C++/Preprocessor Definitions" add 'IMGUI_USER_CONFIG="my_imgui_config.h"' and inside 'my_imgui_config.h' add '#define ImTextureID ImU64' and as many other options as you like.
// [Solution 3] IDE/msbuild: edit imconfig.h and add '#define ImTextureID ImU64' (prefer solution 2 to create your own config file!)
// [Solution 4] command-line: add '/D ImTextureID=ImU64' to your cl.exe command-line (this is what we do in the example_win32_direct12/build_win32.bat file)
static_assert(sizeof(ImTextureID) >= sizeof(bd->hFontSrvGpuDescHandle.ptr), "Can't pack descriptor handle into TexID, 32-bit not supported yet.");
io.Fonts->SetTexID((ImTextureID)bd->hFontSrvGpuDescHandle.ptr);
}
bool ImGui_ImplDX12_CreateDeviceObjects()
{
ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();
if (!bd || !bd->pd3dDevice)
return false;
if (bd->pPipelineState)
ImGui_ImplDX12_InvalidateDeviceObjects();
// Create the root signature
{
D3D12_DESCRIPTOR_RANGE descRange = {};
descRange.RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_SRV;
descRange.NumDescriptors = 1;
descRange.BaseShaderRegister = 0;
descRange.RegisterSpace = 0;
descRange.OffsetInDescriptorsFromTableStart = 0;
D3D12_ROOT_PARAMETER param[2] = {};
param[0].ParameterType = D3D12_ROOT_PARAMETER_TYPE_32BIT_CONSTANTS;
param[0].Constants.ShaderRegister = 0;
param[0].Constants.RegisterSpace = 0;
param[0].Constants.Num32BitValues = 16;
param[0].ShaderVisibility = D3D12_SHADER_VISIBILITY_VERTEX;
param[1].ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;
param[1].DescriptorTable.NumDescriptorRanges = 1;
param[1].DescriptorTable.pDescriptorRanges = &descRange;
param[1].ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
// Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling.
D3D12_STATIC_SAMPLER_DESC staticSampler = {};
staticSampler.Filter = D3D12_FILTER_MIN_MAG_MIP_LINEAR;
staticSampler.AddressU = D3D12_TEXTURE_ADDRESS_MODE_WRAP;
staticSampler.AddressV = D3D12_TEXTURE_ADDRESS_MODE_WRAP;
staticSampler.AddressW = D3D12_TEXTURE_ADDRESS_MODE_WRAP;
staticSampler.MipLODBias = 0.f;
staticSampler.MaxAnisotropy = 0;
staticSampler.ComparisonFunc = D3D12_COMPARISON_FUNC_ALWAYS;
staticSampler.BorderColor = D3D12_STATIC_BORDER_COLOR_TRANSPARENT_BLACK;
staticSampler.MinLOD = 0.f;
staticSampler.MaxLOD = 0.f;
staticSampler.ShaderRegister = 0;
staticSampler.RegisterSpace = 0;
staticSampler.ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
D3D12_ROOT_SIGNATURE_DESC desc = {};
desc.NumParameters = _countof(param);
desc.pParameters = param;
desc.NumStaticSamplers = 1;
desc.pStaticSamplers = &staticSampler;
desc.Flags =
D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |
D3D12_ROOT_SIGNATURE_FLAG_DENY_HULL_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_DOMAIN_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_GEOMETRY_SHADER_ROOT_ACCESS;
// Load d3d12.dll and D3D12SerializeRootSignature() function address dynamically to facilitate using with D3D12On7.
// See if any version of d3d12.dll is already loaded in the process. If so, give preference to that.
static HINSTANCE d3d12_dll = ::GetModuleHandleA("d3d12.dll");
if (d3d12_dll == nullptr)
{
// Attempt to load d3d12.dll from local directories. This will only succeed if
// (1) the current OS is Windows 7, and
// (2) there exists a version of d3d12.dll for Windows 7 (D3D12On7) in one of the following directories.
// See https://github.com/ocornut/imgui/pull/3696 for details.
const char* localD3d12Paths[] = { ".\\d3d12.dll", ".\\d3d12on7\\d3d12.dll", ".\\12on7\\d3d12.dll" }; // A. current directory, B. used by some games, C. used in Microsoft D3D12On7 sample
for (int i = 0; i < IM_ARRAYSIZE(localD3d12Paths); i++)
if ((d3d12_dll = ::LoadLibraryA(localD3d12Paths[i])) != nullptr)
break;
// If failed, we are on Windows >= 10.
if (d3d12_dll == nullptr)
d3d12_dll = ::LoadLibraryA("d3d12.dll");
if (d3d12_dll == nullptr)
return false;
}
PFN_D3D12_SERIALIZE_ROOT_SIGNATURE D3D12SerializeRootSignatureFn = (PFN_D3D12_SERIALIZE_ROOT_SIGNATURE)::GetProcAddress(d3d12_dll, "D3D12SerializeRootSignature");
if (D3D12SerializeRootSignatureFn == nullptr)
return false;
ID3DBlob* blob = nullptr;
if (D3D12SerializeRootSignatureFn(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &blob, nullptr) != S_OK)
return false;
bd->pd3dDevice->CreateRootSignature(0, blob->GetBufferPointer(), blob->GetBufferSize(), IID_PPV_ARGS(&bd->pRootSignature));
blob->Release();
}
// By using D3DCompile() from <d3dcompiler.h> / d3dcompiler.lib, we introduce a dependency to a given version of d3dcompiler_XX.dll (see D3DCOMPILER_DLL_A)
// If you would like to use this DX12 sample code but remove this dependency you can:
// 1) compile once, save the compiled shader blobs into a file or source code and assign them to psoDesc.VS/PS [preferred solution]
// 2) use code to detect any version of the DLL and grab a pointer to D3DCompile from the DLL.
// See https://github.com/ocornut/imgui/pull/638 for sources and details.
D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc;
memset(&psoDesc, 0, sizeof(D3D12_GRAPHICS_PIPELINE_STATE_DESC));
psoDesc.NodeMask = 1;
psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
psoDesc.pRootSignature = bd->pRootSignature;
psoDesc.SampleMask = UINT_MAX;
psoDesc.NumRenderTargets = 1;
psoDesc.RTVFormats[0] = bd->RTVFormat;
psoDesc.SampleDesc.Count = 1;
psoDesc.Flags = D3D12_PIPELINE_STATE_FLAG_NONE;
ID3DBlob* vertexShaderBlob;
ID3DBlob* pixelShaderBlob;
// Create the vertex shader
{
static const char* vertexShader =
"cbuffer vertexBuffer : register(b0) \
{\
float4x4 ProjectionMatrix; \
};\
struct VS_INPUT\
{\
float2 pos : POSITION;\
float4 col : COLOR0;\
float2 uv : TEXCOORD0;\
};\
\
struct PS_INPUT\
{\
float4 pos : SV_POSITION;\
float4 col : COLOR0;\
float2 uv : TEXCOORD0;\
};\
\
PS_INPUT main(VS_INPUT input)\
{\
PS_INPUT output;\
output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.f, 1.f));\
output.col = input.col;\
output.uv = input.uv;\
return output;\
}";
if (FAILED(D3DCompile(vertexShader, strlen(vertexShader), nullptr, nullptr, nullptr, "main", "vs_5_0", 0, 0, &vertexShaderBlob, nullptr)))
return false; // NB: Pass ID3DBlob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
psoDesc.VS = { vertexShaderBlob->GetBufferPointer(), vertexShaderBlob->GetBufferSize() };
// Create the input layout
static D3D12_INPUT_ELEMENT_DESC local_layout[] =
{
{ "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (UINT)IM_OFFSETOF(ImDrawVert, pos), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
{ "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (UINT)IM_OFFSETOF(ImDrawVert, uv), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
{ "COLOR", 0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (UINT)IM_OFFSETOF(ImDrawVert, col), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
};
psoDesc.InputLayout = { local_layout, 3 };
}
// Create the pixel shader
{
static const char* pixelShader =
"struct PS_INPUT\
{\
float4 pos : SV_POSITION;\
float4 col : COLOR0;\
float2 uv : TEXCOORD0;\
};\
SamplerState sampler0 : register(s0);\
Texture2D texture0 : register(t0);\
\
float4 main(PS_INPUT input) : SV_Target\
{\
float4 out_col = input.col * texture0.Sample(sampler0, input.uv); \
return out_col; \
}";
if (FAILED(D3DCompile(pixelShader, strlen(pixelShader), nullptr, nullptr, nullptr, "main", "ps_5_0", 0, 0, &pixelShaderBlob, nullptr)))
{
vertexShaderBlob->Release();
return false; // NB: Pass ID3DBlob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
}
psoDesc.PS = { pixelShaderBlob->GetBufferPointer(), pixelShaderBlob->GetBufferSize() };
}
// Create the blending setup
{
D3D12_BLEND_DESC& desc = psoDesc.BlendState;
desc.AlphaToCoverageEnable = false;
desc.RenderTarget[0].BlendEnable = true;
desc.RenderTarget[0].SrcBlend = D3D12_BLEND_SRC_ALPHA;
desc.RenderTarget[0].DestBlend = D3D12_BLEND_INV_SRC_ALPHA;
desc.RenderTarget[0].BlendOp = D3D12_BLEND_OP_ADD;
desc.RenderTarget[0].SrcBlendAlpha = D3D12_BLEND_ONE;
desc.RenderTarget[0].DestBlendAlpha = D3D12_BLEND_INV_SRC_ALPHA;
desc.RenderTarget[0].BlendOpAlpha = D3D12_BLEND_OP_ADD;
desc.RenderTarget[0].RenderTargetWriteMask = D3D12_COLOR_WRITE_ENABLE_ALL;
}
// Create the rasterizer state
{
D3D12_RASTERIZER_DESC& desc = psoDesc.RasterizerState;
desc.FillMode = D3D12_FILL_MODE_SOLID;
desc.CullMode = D3D12_CULL_MODE_NONE;
desc.FrontCounterClockwise = FALSE;
desc.DepthBias = D3D12_DEFAULT_DEPTH_BIAS;
desc.DepthBiasClamp = D3D12_DEFAULT_DEPTH_BIAS_CLAMP;
desc.SlopeScaledDepthBias = D3D12_DEFAULT_SLOPE_SCALED_DEPTH_BIAS;
desc.DepthClipEnable = true;
desc.MultisampleEnable = FALSE;
desc.AntialiasedLineEnable = FALSE;
desc.ForcedSampleCount = 0;
desc.ConservativeRaster = D3D12_CONSERVATIVE_RASTERIZATION_MODE_OFF;
}
// Create depth-stencil State
{
D3D12_DEPTH_STENCIL_DESC& desc = psoDesc.DepthStencilState;
desc.DepthEnable = false;
desc.DepthWriteMask = D3D12_DEPTH_WRITE_MASK_ALL;
desc.DepthFunc = D3D12_COMPARISON_FUNC_ALWAYS;
desc.StencilEnable = false;
desc.FrontFace.StencilFailOp = desc.FrontFace.StencilDepthFailOp = desc.FrontFace.StencilPassOp = D3D12_STENCIL_OP_KEEP;
desc.FrontFace.StencilFunc = D3D12_COMPARISON_FUNC_ALWAYS;
desc.BackFace = desc.FrontFace;
}
HRESULT result_pipeline_state = bd->pd3dDevice->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&bd->pPipelineState));
vertexShaderBlob->Release();
pixelShaderBlob->Release();
if (result_pipeline_state != S_OK)
return false;
ImGui_ImplDX12_CreateFontsTexture();
return true;
}
void ImGui_ImplDX12_InvalidateDeviceObjects()
{
ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();
if (!bd || !bd->pd3dDevice)
return;
ImGuiIO& io = ImGui::GetIO();
SafeRelease(bd->pRootSignature);
SafeRelease(bd->pPipelineState);
SafeRelease(bd->pFontTextureResource);
io.Fonts->SetTexID(0); // We copied bd->pFontTextureView to io.Fonts->TexID so let's clear that as well.
for (UINT i = 0; i < bd->numFramesInFlight; i++)
{
ImGui_ImplDX12_RenderBuffers* fr = &bd->pFrameResources[i];
SafeRelease(fr->IndexBuffer);
SafeRelease(fr->VertexBuffer);
}
}
bool ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format, ID3D12DescriptorHeap* cbv_srv_heap,
D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle)
{
ImGuiIO& io = ImGui::GetIO();
IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
// Setup backend capabilities flags
ImGui_ImplDX12_Data* bd = IM_NEW(ImGui_ImplDX12_Data)();
io.BackendRendererUserData = (void*)bd;
io.BackendRendererName = "imgui_impl_dx12";
io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
bd->pd3dDevice = device;
bd->RTVFormat = rtv_format;
bd->hFontSrvCpuDescHandle = font_srv_cpu_desc_handle;
bd->hFontSrvGpuDescHandle = font_srv_gpu_desc_handle;
bd->pFrameResources = new ImGui_ImplDX12_RenderBuffers[num_frames_in_flight];
bd->numFramesInFlight = num_frames_in_flight;
bd->frameIndex = UINT_MAX;
IM_UNUSED(cbv_srv_heap); // Unused in master branch (will be used by multi-viewports)
// Create buffers with a default size (they will later be grown as needed)
for (int i = 0; i < num_frames_in_flight; i++)
{
ImGui_ImplDX12_RenderBuffers* fr = &bd->pFrameResources[i];
fr->IndexBuffer = nullptr;
fr->VertexBuffer = nullptr;
fr->IndexBufferSize = 10000;
fr->VertexBufferSize = 5000;
}
return true;
}
void ImGui_ImplDX12_Shutdown()
{
ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();
IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplDX12_InvalidateDeviceObjects();
delete[] bd->pFrameResources;
io.BackendRendererName = nullptr;
io.BackendRendererUserData = nullptr;
IM_DELETE(bd);
}
void ImGui_ImplDX12_NewFrame()
{
ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();
IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplDX12_Init()?");
if (!bd->pPipelineState)
ImGui_ImplDX12_CreateDeviceObjects();
}

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// dear imgui: Renderer Backend for DirectX12
// This needs to be used along with a Platform Backend (e.g. Win32)
// Implemented features:
// [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as ImTextureID. Read the FAQ about ImTextureID!
// [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
// Important: to compile on 32-bit systems, this backend requires code to be compiled with '#define ImTextureID ImU64'.
// See imgui_impl_dx12.cpp file for details.
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
#pragma once
#include "imgui.h" // IMGUI_IMPL_API
#include <dxgiformat.h> // DXGI_FORMAT
struct ID3D12Device;
struct ID3D12DescriptorHeap;
struct ID3D12GraphicsCommandList;
struct D3D12_CPU_DESCRIPTOR_HANDLE;
struct D3D12_GPU_DESCRIPTOR_HANDLE;
// cmd_list is the command list that the implementation will use to render imgui draw lists.
// Before calling the render function, caller must prepare cmd_list by resetting it and setting the appropriate
// render target and descriptor heap that contains font_srv_cpu_desc_handle/font_srv_gpu_desc_handle.
// font_srv_cpu_desc_handle and font_srv_gpu_desc_handle are handles to a single SRV descriptor to use for the internal font texture.
IMGUI_IMPL_API bool ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format, ID3D12DescriptorHeap* cbv_srv_heap,
D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle);
IMGUI_IMPL_API void ImGui_ImplDX12_Shutdown();
IMGUI_IMPL_API void ImGui_ImplDX12_NewFrame();
IMGUI_IMPL_API void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandList* graphics_command_list);
// Use if you want to reset your rendering device without losing Dear ImGui state.
IMGUI_IMPL_API void ImGui_ImplDX12_InvalidateDeviceObjects();
IMGUI_IMPL_API bool ImGui_ImplDX12_CreateDeviceObjects();

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// dear imgui: Platform Backend for GLFW
// This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan, WebGPU..)
// (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
// (Requires: GLFW 3.1+)
// Implemented features:
// [X] Platform: Clipboard support.
// [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy GLFW_KEY_* values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]
// [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
// [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange' (note: the resizing cursors requires GLFW 3.4+).
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2023-01-04: Inputs: Fixed mods state on Linux when using Alt-GR text input (e.g. German keyboard layout), could lead to broken text input. Revert a 2022/01/17 change were we resumed using mods provided by GLFW, turns out they were faulty.
// 2022-11-22: Perform a dummy glfwGetError() read to cancel missing names with glfwGetKeyName(). (#5908)
// 2022-10-18: Perform a dummy glfwGetError() read to cancel missing mouse cursors errors. Using GLFW_VERSION_COMBINED directly. (#5785)
// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
// 2022-09-26: Inputs: Renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported).
// 2022-09-01: Inputs: Honor GLFW_CURSOR_DISABLED by not setting mouse position.
// 2022-04-30: Inputs: Fixed ImGui_ImplGlfw_TranslateUntranslatedKey() for lower case letters on OSX.
// 2022-03-23: Inputs: Fixed a regression in 1.87 which resulted in keyboard modifiers events being reported incorrectly on Linux/X11.
// 2022-02-07: Added ImGui_ImplGlfw_InstallCallbacks()/ImGui_ImplGlfw_RestoreCallbacks() helpers to facilitate user installing callbacks after initializing backend.
// 2022-01-26: Inputs: replaced short-lived io.AddKeyModsEvent() (added two weeks ago) with io.AddKeyEvent() using ImGuiKey_ModXXX flags. Sorry for the confusion.
// 2021-01-20: Inputs: calling new io.AddKeyAnalogEvent() for gamepad support, instead of writing directly to io.NavInputs[].
// 2022-01-17: Inputs: calling new io.AddMousePosEvent(), io.AddMouseButtonEvent(), io.AddMouseWheelEvent() API (1.87+).
// 2022-01-17: Inputs: always update key mods next and before key event (not in NewFrame) to fix input queue with very low framerates.
// 2022-01-12: *BREAKING CHANGE*: Now using glfwSetCursorPosCallback(). If you called ImGui_ImplGlfw_InitXXX() with install_callbacks = false, you MUST install glfwSetCursorPosCallback() and forward it to the backend via ImGui_ImplGlfw_CursorPosCallback().
// 2022-01-10: Inputs: calling new io.AddKeyEvent(), io.AddKeyModsEvent() + io.SetKeyEventNativeData() API (1.87+). Support for full ImGuiKey range.
// 2022-01-05: Inputs: Converting GLFW untranslated keycodes back to translated keycodes (in the ImGui_ImplGlfw_KeyCallback() function) in order to match the behavior of every other backend, and facilitate the use of GLFW with lettered-shortcuts API.
// 2021-08-17: *BREAKING CHANGE*: Now using glfwSetWindowFocusCallback() to calling io.AddFocusEvent(). If you called ImGui_ImplGlfw_InitXXX() with install_callbacks = false, you MUST install glfwSetWindowFocusCallback() and forward it to the backend via ImGui_ImplGlfw_WindowFocusCallback().
// 2021-07-29: *BREAKING CHANGE*: Now using glfwSetCursorEnterCallback(). MousePos is correctly reported when the host platform window is hovered but not focused. If you called ImGui_ImplGlfw_InitXXX() with install_callbacks = false, you MUST install glfwSetWindowFocusCallback() callback and forward it to the backend via ImGui_ImplGlfw_CursorEnterCallback().
// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
// 2020-01-17: Inputs: Disable error callback while assigning mouse cursors because some X11 setup don't have them and it generates errors.
// 2019-12-05: Inputs: Added support for new mouse cursors added in GLFW 3.4+ (resizing cursors, not allowed cursor).
// 2019-10-18: Misc: Previously installed user callbacks are now restored on shutdown.
// 2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter.
// 2019-05-11: Inputs: Don't filter value from character callback before calling AddInputCharacter().
// 2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized.
// 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
// 2018-11-07: Inputs: When installing our GLFW callbacks, we save user's previously installed ones - if any - and chain call them.
// 2018-08-01: Inputs: Workaround for Emscripten which doesn't seem to handle focus related calls.
// 2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor.
// 2018-06-08: Misc: Extracted imgui_impl_glfw.cpp/.h away from the old combined GLFW+OpenGL/Vulkan examples.
// 2018-03-20: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors flag + honor ImGuiConfigFlags_NoMouseCursorChange flag.
// 2018-02-20: Inputs: Added support for mouse cursors (ImGui::GetMouseCursor() value, passed to glfwSetCursor()).
// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
// 2018-01-25: Inputs: Added gamepad support if ImGuiConfigFlags_NavEnableGamepad is set.
// 2018-01-25: Inputs: Honoring the io.WantSetMousePos by repositioning the mouse (when using navigation and ImGuiConfigFlags_NavMoveMouse is set).
// 2018-01-20: Inputs: Added Horizontal Mouse Wheel support.
// 2018-01-18: Inputs: Added mapping for ImGuiKey_Insert.
// 2017-08-25: Inputs: MousePos set to -FLT_MAX,-FLT_MAX when mouse is unavailable/missing (instead of -1,-1).
// 2016-10-15: Misc: Added a void* user_data parameter to Clipboard function handlers.
#include "imgui.h"
#include "imgui_impl_glfw.h"
// Clang warnings with -Weverything
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast
#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness
#endif
// GLFW
#include <GLFW/glfw3.h>
#ifdef _WIN32
#undef APIENTRY
#define GLFW_EXPOSE_NATIVE_WIN32
#include <GLFW/glfw3native.h> // for glfwGetWin32Window
#endif
// We gather version tests as define in order to easily see which features are version-dependent.
#define GLFW_VERSION_COMBINED (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 + GLFW_VERSION_REVISION)
#ifdef GLFW_RESIZE_NESW_CURSOR // Let's be nice to people who pulled GLFW between 2019-04-16 (3.4 define) and 2019-11-29 (cursors defines) // FIXME: Remove when GLFW 3.4 is released?
#define GLFW_HAS_NEW_CURSORS (GLFW_VERSION_COMBINED >= 3400) // 3.4+ GLFW_RESIZE_ALL_CURSOR, GLFW_RESIZE_NESW_CURSOR, GLFW_RESIZE_NWSE_CURSOR, GLFW_NOT_ALLOWED_CURSOR
#else
#define GLFW_HAS_NEW_CURSORS (0)
#endif
#define GLFW_HAS_GAMEPAD_API (GLFW_VERSION_COMBINED >= 3300) // 3.3+ glfwGetGamepadState() new api
#define GLFW_HAS_GETKEYNAME (GLFW_VERSION_COMBINED >= 3200) // 3.2+ glfwGetKeyName()
// GLFW data
enum GlfwClientApi
{
GlfwClientApi_Unknown,
GlfwClientApi_OpenGL,
GlfwClientApi_Vulkan
};
struct ImGui_ImplGlfw_Data
{
GLFWwindow* Window;
GlfwClientApi ClientApi;
double Time;
GLFWwindow* MouseWindow;
GLFWcursor* MouseCursors[ImGuiMouseCursor_COUNT];
ImVec2 LastValidMousePos;
bool InstalledCallbacks;
// Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
GLFWwindowfocusfun PrevUserCallbackWindowFocus;
GLFWcursorposfun PrevUserCallbackCursorPos;
GLFWcursorenterfun PrevUserCallbackCursorEnter;
GLFWmousebuttonfun PrevUserCallbackMousebutton;
GLFWscrollfun PrevUserCallbackScroll;
GLFWkeyfun PrevUserCallbackKey;
GLFWcharfun PrevUserCallbackChar;
GLFWmonitorfun PrevUserCallbackMonitor;
ImGui_ImplGlfw_Data() { memset((void*)this, 0, sizeof(*this)); }
};
// Backend data stored in io.BackendPlatformUserData to allow support for multiple Dear ImGui contexts
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
// FIXME: multi-context support is not well tested and probably dysfunctional in this backend.
// - Because glfwPollEvents() process all windows and some events may be called outside of it, you will need to register your own callbacks
// (passing install_callbacks=false in ImGui_ImplGlfw_InitXXX functions), set the current dear imgui context and then call our callbacks.
// - Otherwise we may need to store a GLFWWindow* -> ImGuiContext* map and handle this in the backend, adding a little bit of extra complexity to it.
// FIXME: some shared resources (mouse cursor shape, gamepad) are mishandled when using multi-context.
static ImGui_ImplGlfw_Data* ImGui_ImplGlfw_GetBackendData()
{
return ImGui::GetCurrentContext() ? (ImGui_ImplGlfw_Data*)ImGui::GetIO().BackendPlatformUserData : nullptr;
}
// Functions
static const char* ImGui_ImplGlfw_GetClipboardText(void* user_data)
{
return glfwGetClipboardString((GLFWwindow*)user_data);
}
static void ImGui_ImplGlfw_SetClipboardText(void* user_data, const char* text)
{
glfwSetClipboardString((GLFWwindow*)user_data, text);
}
static ImGuiKey ImGui_ImplGlfw_KeyToImGuiKey(int key)
{
switch (key)
{
case GLFW_KEY_TAB: return ImGuiKey_Tab;
case GLFW_KEY_LEFT: return ImGuiKey_LeftArrow;
case GLFW_KEY_RIGHT: return ImGuiKey_RightArrow;
case GLFW_KEY_UP: return ImGuiKey_UpArrow;
case GLFW_KEY_DOWN: return ImGuiKey_DownArrow;
case GLFW_KEY_PAGE_UP: return ImGuiKey_PageUp;
case GLFW_KEY_PAGE_DOWN: return ImGuiKey_PageDown;
case GLFW_KEY_HOME: return ImGuiKey_Home;
case GLFW_KEY_END: return ImGuiKey_End;
case GLFW_KEY_INSERT: return ImGuiKey_Insert;
case GLFW_KEY_DELETE: return ImGuiKey_Delete;
case GLFW_KEY_BACKSPACE: return ImGuiKey_Backspace;
case GLFW_KEY_SPACE: return ImGuiKey_Space;
case GLFW_KEY_ENTER: return ImGuiKey_Enter;
case GLFW_KEY_ESCAPE: return ImGuiKey_Escape;
case GLFW_KEY_APOSTROPHE: return ImGuiKey_Apostrophe;
case GLFW_KEY_COMMA: return ImGuiKey_Comma;
case GLFW_KEY_MINUS: return ImGuiKey_Minus;
case GLFW_KEY_PERIOD: return ImGuiKey_Period;
case GLFW_KEY_SLASH: return ImGuiKey_Slash;
case GLFW_KEY_SEMICOLON: return ImGuiKey_Semicolon;
case GLFW_KEY_EQUAL: return ImGuiKey_Equal;
case GLFW_KEY_LEFT_BRACKET: return ImGuiKey_LeftBracket;
case GLFW_KEY_BACKSLASH: return ImGuiKey_Backslash;
case GLFW_KEY_RIGHT_BRACKET: return ImGuiKey_RightBracket;
case GLFW_KEY_GRAVE_ACCENT: return ImGuiKey_GraveAccent;
case GLFW_KEY_CAPS_LOCK: return ImGuiKey_CapsLock;
case GLFW_KEY_SCROLL_LOCK: return ImGuiKey_ScrollLock;
case GLFW_KEY_NUM_LOCK: return ImGuiKey_NumLock;
case GLFW_KEY_PRINT_SCREEN: return ImGuiKey_PrintScreen;
case GLFW_KEY_PAUSE: return ImGuiKey_Pause;
case GLFW_KEY_KP_0: return ImGuiKey_Keypad0;
case GLFW_KEY_KP_1: return ImGuiKey_Keypad1;
case GLFW_KEY_KP_2: return ImGuiKey_Keypad2;
case GLFW_KEY_KP_3: return ImGuiKey_Keypad3;
case GLFW_KEY_KP_4: return ImGuiKey_Keypad4;
case GLFW_KEY_KP_5: return ImGuiKey_Keypad5;
case GLFW_KEY_KP_6: return ImGuiKey_Keypad6;
case GLFW_KEY_KP_7: return ImGuiKey_Keypad7;
case GLFW_KEY_KP_8: return ImGuiKey_Keypad8;
case GLFW_KEY_KP_9: return ImGuiKey_Keypad9;
case GLFW_KEY_KP_DECIMAL: return ImGuiKey_KeypadDecimal;
case GLFW_KEY_KP_DIVIDE: return ImGuiKey_KeypadDivide;
case GLFW_KEY_KP_MULTIPLY: return ImGuiKey_KeypadMultiply;
case GLFW_KEY_KP_SUBTRACT: return ImGuiKey_KeypadSubtract;
case GLFW_KEY_KP_ADD: return ImGuiKey_KeypadAdd;
case GLFW_KEY_KP_ENTER: return ImGuiKey_KeypadEnter;
case GLFW_KEY_KP_EQUAL: return ImGuiKey_KeypadEqual;
case GLFW_KEY_LEFT_SHIFT: return ImGuiKey_LeftShift;
case GLFW_KEY_LEFT_CONTROL: return ImGuiKey_LeftCtrl;
case GLFW_KEY_LEFT_ALT: return ImGuiKey_LeftAlt;
case GLFW_KEY_LEFT_SUPER: return ImGuiKey_LeftSuper;
case GLFW_KEY_RIGHT_SHIFT: return ImGuiKey_RightShift;
case GLFW_KEY_RIGHT_CONTROL: return ImGuiKey_RightCtrl;
case GLFW_KEY_RIGHT_ALT: return ImGuiKey_RightAlt;
case GLFW_KEY_RIGHT_SUPER: return ImGuiKey_RightSuper;
case GLFW_KEY_MENU: return ImGuiKey_Menu;
case GLFW_KEY_0: return ImGuiKey_0;
case GLFW_KEY_1: return ImGuiKey_1;
case GLFW_KEY_2: return ImGuiKey_2;
case GLFW_KEY_3: return ImGuiKey_3;
case GLFW_KEY_4: return ImGuiKey_4;
case GLFW_KEY_5: return ImGuiKey_5;
case GLFW_KEY_6: return ImGuiKey_6;
case GLFW_KEY_7: return ImGuiKey_7;
case GLFW_KEY_8: return ImGuiKey_8;
case GLFW_KEY_9: return ImGuiKey_9;
case GLFW_KEY_A: return ImGuiKey_A;
case GLFW_KEY_B: return ImGuiKey_B;
case GLFW_KEY_C: return ImGuiKey_C;
case GLFW_KEY_D: return ImGuiKey_D;
case GLFW_KEY_E: return ImGuiKey_E;
case GLFW_KEY_F: return ImGuiKey_F;
case GLFW_KEY_G: return ImGuiKey_G;
case GLFW_KEY_H: return ImGuiKey_H;
case GLFW_KEY_I: return ImGuiKey_I;
case GLFW_KEY_J: return ImGuiKey_J;
case GLFW_KEY_K: return ImGuiKey_K;
case GLFW_KEY_L: return ImGuiKey_L;
case GLFW_KEY_M: return ImGuiKey_M;
case GLFW_KEY_N: return ImGuiKey_N;
case GLFW_KEY_O: return ImGuiKey_O;
case GLFW_KEY_P: return ImGuiKey_P;
case GLFW_KEY_Q: return ImGuiKey_Q;
case GLFW_KEY_R: return ImGuiKey_R;
case GLFW_KEY_S: return ImGuiKey_S;
case GLFW_KEY_T: return ImGuiKey_T;
case GLFW_KEY_U: return ImGuiKey_U;
case GLFW_KEY_V: return ImGuiKey_V;
case GLFW_KEY_W: return ImGuiKey_W;
case GLFW_KEY_X: return ImGuiKey_X;
case GLFW_KEY_Y: return ImGuiKey_Y;
case GLFW_KEY_Z: return ImGuiKey_Z;
case GLFW_KEY_F1: return ImGuiKey_F1;
case GLFW_KEY_F2: return ImGuiKey_F2;
case GLFW_KEY_F3: return ImGuiKey_F3;
case GLFW_KEY_F4: return ImGuiKey_F4;
case GLFW_KEY_F5: return ImGuiKey_F5;
case GLFW_KEY_F6: return ImGuiKey_F6;
case GLFW_KEY_F7: return ImGuiKey_F7;
case GLFW_KEY_F8: return ImGuiKey_F8;
case GLFW_KEY_F9: return ImGuiKey_F9;
case GLFW_KEY_F10: return ImGuiKey_F10;
case GLFW_KEY_F11: return ImGuiKey_F11;
case GLFW_KEY_F12: return ImGuiKey_F12;
default: return ImGuiKey_None;
}
}
// X11 does not include current pressed/released modifier key in 'mods' flags submitted by GLFW
// See https://github.com/ocornut/imgui/issues/6034 and https://github.com/glfw/glfw/issues/1630
static void ImGui_ImplGlfw_UpdateKeyModifiers()
{
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
io.AddKeyEvent(ImGuiMod_Ctrl, (glfwGetKey(bd->Window, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS) || (glfwGetKey(bd->Window, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS));
io.AddKeyEvent(ImGuiMod_Shift, (glfwGetKey(bd->Window, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS) || (glfwGetKey(bd->Window, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS));
io.AddKeyEvent(ImGuiMod_Alt, (glfwGetKey(bd->Window, GLFW_KEY_LEFT_ALT) == GLFW_PRESS) || (glfwGetKey(bd->Window, GLFW_KEY_RIGHT_ALT) == GLFW_PRESS));
io.AddKeyEvent(ImGuiMod_Super, (glfwGetKey(bd->Window, GLFW_KEY_LEFT_SUPER) == GLFW_PRESS) || (glfwGetKey(bd->Window, GLFW_KEY_RIGHT_SUPER) == GLFW_PRESS));
}
void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods)
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
if (bd->PrevUserCallbackMousebutton != nullptr && window == bd->Window)
bd->PrevUserCallbackMousebutton(window, button, action, mods);
ImGui_ImplGlfw_UpdateKeyModifiers();
ImGuiIO& io = ImGui::GetIO();
if (button >= 0 && button < ImGuiMouseButton_COUNT)
io.AddMouseButtonEvent(button, action == GLFW_PRESS);
}
void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset)
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
if (bd->PrevUserCallbackScroll != nullptr && window == bd->Window)
bd->PrevUserCallbackScroll(window, xoffset, yoffset);
ImGuiIO& io = ImGui::GetIO();
io.AddMouseWheelEvent((float)xoffset, (float)yoffset);
}
static int ImGui_ImplGlfw_TranslateUntranslatedKey(int key, int scancode)
{
#if GLFW_HAS_GETKEYNAME && !defined(__EMSCRIPTEN__)
// GLFW 3.1+ attempts to "untranslate" keys, which goes the opposite of what every other framework does, making using lettered shortcuts difficult.
// (It had reasons to do so: namely GLFW is/was more likely to be used for WASD-type game controls rather than lettered shortcuts, but IHMO the 3.1 change could have been done differently)
// See https://github.com/glfw/glfw/issues/1502 for details.
// Adding a workaround to undo this (so our keys are translated->untranslated->translated, likely a lossy process).
// This won't cover edge cases but this is at least going to cover common cases.
if (key >= GLFW_KEY_KP_0 && key <= GLFW_KEY_KP_EQUAL)
return key;
GLFWerrorfun prev_error_callback = glfwSetErrorCallback(nullptr);
const char* key_name = glfwGetKeyName(key, scancode);
glfwSetErrorCallback(prev_error_callback);
#if (GLFW_VERSION_COMBINED >= 3300) // Eat errors (see #5908)
(void)glfwGetError(NULL);
#endif
if (key_name && key_name[0] != 0 && key_name[1] == 0)
{
const char char_names[] = "`-=[]\\,;\'./";
const int char_keys[] = { GLFW_KEY_GRAVE_ACCENT, GLFW_KEY_MINUS, GLFW_KEY_EQUAL, GLFW_KEY_LEFT_BRACKET, GLFW_KEY_RIGHT_BRACKET, GLFW_KEY_BACKSLASH, GLFW_KEY_COMMA, GLFW_KEY_SEMICOLON, GLFW_KEY_APOSTROPHE, GLFW_KEY_PERIOD, GLFW_KEY_SLASH, 0 };
IM_ASSERT(IM_ARRAYSIZE(char_names) == IM_ARRAYSIZE(char_keys));
if (key_name[0] >= '0' && key_name[0] <= '9') { key = GLFW_KEY_0 + (key_name[0] - '0'); }
else if (key_name[0] >= 'A' && key_name[0] <= 'Z') { key = GLFW_KEY_A + (key_name[0] - 'A'); }
else if (key_name[0] >= 'a' && key_name[0] <= 'z') { key = GLFW_KEY_A + (key_name[0] - 'a'); }
else if (const char* p = strchr(char_names, key_name[0])) { key = char_keys[p - char_names]; }
}
// if (action == GLFW_PRESS) printf("key %d scancode %d name '%s'\n", key, scancode, key_name);
#else
IM_UNUSED(scancode);
#endif
return key;
}
void ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int keycode, int scancode, int action, int mods)
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
if (bd->PrevUserCallbackKey != nullptr && window == bd->Window)
bd->PrevUserCallbackKey(window, keycode, scancode, action, mods);
if (action != GLFW_PRESS && action != GLFW_RELEASE)
return;
ImGui_ImplGlfw_UpdateKeyModifiers();
keycode = ImGui_ImplGlfw_TranslateUntranslatedKey(keycode, scancode);
ImGuiIO& io = ImGui::GetIO();
ImGuiKey imgui_key = ImGui_ImplGlfw_KeyToImGuiKey(keycode);
io.AddKeyEvent(imgui_key, (action == GLFW_PRESS));
io.SetKeyEventNativeData(imgui_key, keycode, scancode); // To support legacy indexing (<1.87 user code)
}
void ImGui_ImplGlfw_WindowFocusCallback(GLFWwindow* window, int focused)
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
if (bd->PrevUserCallbackWindowFocus != nullptr && window == bd->Window)
bd->PrevUserCallbackWindowFocus(window, focused);
ImGuiIO& io = ImGui::GetIO();
io.AddFocusEvent(focused != 0);
}
void ImGui_ImplGlfw_CursorPosCallback(GLFWwindow* window, double x, double y)
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
if (bd->PrevUserCallbackCursorPos != nullptr && window == bd->Window)
bd->PrevUserCallbackCursorPos(window, x, y);
if (glfwGetInputMode(window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED)
return;
ImGuiIO& io = ImGui::GetIO();
io.AddMousePosEvent((float)x, (float)y);
bd->LastValidMousePos = ImVec2((float)x, (float)y);
}
// Workaround: X11 seems to send spurious Leave/Enter events which would make us lose our position,
// so we back it up and restore on Leave/Enter (see https://github.com/ocornut/imgui/issues/4984)
void ImGui_ImplGlfw_CursorEnterCallback(GLFWwindow* window, int entered)
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
if (bd->PrevUserCallbackCursorEnter != nullptr && window == bd->Window)
bd->PrevUserCallbackCursorEnter(window, entered);
if (glfwGetInputMode(window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED)
return;
ImGuiIO& io = ImGui::GetIO();
if (entered)
{
bd->MouseWindow = window;
io.AddMousePosEvent(bd->LastValidMousePos.x, bd->LastValidMousePos.y);
}
else if (!entered && bd->MouseWindow == window)
{
bd->LastValidMousePos = io.MousePos;
bd->MouseWindow = nullptr;
io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
}
}
void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c)
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
if (bd->PrevUserCallbackChar != nullptr && window == bd->Window)
bd->PrevUserCallbackChar(window, c);
ImGuiIO& io = ImGui::GetIO();
io.AddInputCharacter(c);
}
void ImGui_ImplGlfw_MonitorCallback(GLFWmonitor*, int)
{
// Unused in 'master' branch but 'docking' branch will use this, so we declare it ahead of it so if you have to install callbacks you can install this one too.
}
void ImGui_ImplGlfw_InstallCallbacks(GLFWwindow* window)
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
IM_ASSERT(bd->InstalledCallbacks == false && "Callbacks already installed!");
IM_ASSERT(bd->Window == window);
bd->PrevUserCallbackWindowFocus = glfwSetWindowFocusCallback(window, ImGui_ImplGlfw_WindowFocusCallback);
bd->PrevUserCallbackCursorEnter = glfwSetCursorEnterCallback(window, ImGui_ImplGlfw_CursorEnterCallback);
bd->PrevUserCallbackCursorPos = glfwSetCursorPosCallback(window, ImGui_ImplGlfw_CursorPosCallback);
bd->PrevUserCallbackMousebutton = glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback);
bd->PrevUserCallbackScroll = glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback);
bd->PrevUserCallbackKey = glfwSetKeyCallback(window, ImGui_ImplGlfw_KeyCallback);
bd->PrevUserCallbackChar = glfwSetCharCallback(window, ImGui_ImplGlfw_CharCallback);
bd->PrevUserCallbackMonitor = glfwSetMonitorCallback(ImGui_ImplGlfw_MonitorCallback);
bd->InstalledCallbacks = true;
}
void ImGui_ImplGlfw_RestoreCallbacks(GLFWwindow* window)
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
IM_ASSERT(bd->InstalledCallbacks == true && "Callbacks not installed!");
IM_ASSERT(bd->Window == window);
glfwSetWindowFocusCallback(window, bd->PrevUserCallbackWindowFocus);
glfwSetCursorEnterCallback(window, bd->PrevUserCallbackCursorEnter);
glfwSetCursorPosCallback(window, bd->PrevUserCallbackCursorPos);
glfwSetMouseButtonCallback(window, bd->PrevUserCallbackMousebutton);
glfwSetScrollCallback(window, bd->PrevUserCallbackScroll);
glfwSetKeyCallback(window, bd->PrevUserCallbackKey);
glfwSetCharCallback(window, bd->PrevUserCallbackChar);
glfwSetMonitorCallback(bd->PrevUserCallbackMonitor);
bd->InstalledCallbacks = false;
bd->PrevUserCallbackWindowFocus = nullptr;
bd->PrevUserCallbackCursorEnter = nullptr;
bd->PrevUserCallbackCursorPos = nullptr;
bd->PrevUserCallbackMousebutton = nullptr;
bd->PrevUserCallbackScroll = nullptr;
bd->PrevUserCallbackKey = nullptr;
bd->PrevUserCallbackChar = nullptr;
bd->PrevUserCallbackMonitor = nullptr;
}
static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, GlfwClientApi client_api)
{
ImGuiIO& io = ImGui::GetIO();
IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
//printf("GLFW_VERSION: %d.%d.%d (%d)", GLFW_VERSION_MAJOR, GLFW_VERSION_MINOR, GLFW_VERSION_REVISION, GLFW_VERSION_COMBINED);
// Setup backend capabilities flags
ImGui_ImplGlfw_Data* bd = IM_NEW(ImGui_ImplGlfw_Data)();
io.BackendPlatformUserData = (void*)bd;
io.BackendPlatformName = "imgui_impl_glfw";
io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional)
io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used)
bd->Window = window;
bd->Time = 0.0;
io.SetClipboardTextFn = ImGui_ImplGlfw_SetClipboardText;
io.GetClipboardTextFn = ImGui_ImplGlfw_GetClipboardText;
io.ClipboardUserData = bd->Window;
// Set platform dependent data in viewport
#if defined(_WIN32)
ImGui::GetMainViewport()->PlatformHandleRaw = (void*)glfwGetWin32Window(bd->Window);
#endif
// Create mouse cursors
// (By design, on X11 cursors are user configurable and some cursors may be missing. When a cursor doesn't exist,
// GLFW will emit an error which will often be printed by the app, so we temporarily disable error reporting.
// Missing cursors will return nullptr and our _UpdateMouseCursor() function will use the Arrow cursor instead.)
GLFWerrorfun prev_error_callback = glfwSetErrorCallback(nullptr);
bd->MouseCursors[ImGuiMouseCursor_Arrow] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
bd->MouseCursors[ImGuiMouseCursor_TextInput] = glfwCreateStandardCursor(GLFW_IBEAM_CURSOR);
bd->MouseCursors[ImGuiMouseCursor_ResizeNS] = glfwCreateStandardCursor(GLFW_VRESIZE_CURSOR);
bd->MouseCursors[ImGuiMouseCursor_ResizeEW] = glfwCreateStandardCursor(GLFW_HRESIZE_CURSOR);
bd->MouseCursors[ImGuiMouseCursor_Hand] = glfwCreateStandardCursor(GLFW_HAND_CURSOR);
#if GLFW_HAS_NEW_CURSORS
bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_RESIZE_ALL_CURSOR);
bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_RESIZE_NESW_CURSOR);
bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_RESIZE_NWSE_CURSOR);
bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_NOT_ALLOWED_CURSOR);
#else
bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
#endif
glfwSetErrorCallback(prev_error_callback);
#if (GLFW_VERSION_COMBINED >= 3300) // Eat errors (see #5785)
(void)glfwGetError(NULL);
#endif
// Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
if (install_callbacks)
ImGui_ImplGlfw_InstallCallbacks(window);
bd->ClientApi = client_api;
return true;
}
bool ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks)
{
return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_OpenGL);
}
bool ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks)
{
return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_Vulkan);
}
bool ImGui_ImplGlfw_InitForOther(GLFWwindow* window, bool install_callbacks)
{
return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_Unknown);
}
void ImGui_ImplGlfw_Shutdown()
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
IM_ASSERT(bd != nullptr && "No platform backend to shutdown, or already shutdown?");
ImGuiIO& io = ImGui::GetIO();
if (bd->InstalledCallbacks)
ImGui_ImplGlfw_RestoreCallbacks(bd->Window);
for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
glfwDestroyCursor(bd->MouseCursors[cursor_n]);
io.BackendPlatformName = nullptr;
io.BackendPlatformUserData = nullptr;
IM_DELETE(bd);
}
static void ImGui_ImplGlfw_UpdateMouseData()
{
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
ImGuiIO& io = ImGui::GetIO();
if (glfwGetInputMode(bd->Window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED)
{
io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
return;
}
#ifdef __EMSCRIPTEN__
const bool is_app_focused = true;
#else
const bool is_app_focused = glfwGetWindowAttrib(bd->Window, GLFW_FOCUSED) != 0;
#endif
if (is_app_focused)
{
// (Optional) Set OS mouse position from Dear ImGui if requested (rarely used, only when ImGuiConfigFlags_NavEnableSetMousePos is enabled by user)
if (io.WantSetMousePos)
glfwSetCursorPos(bd->Window, (double)io.MousePos.x, (double)io.MousePos.y);
// (Optional) Fallback to provide mouse position when focused (ImGui_ImplGlfw_CursorPosCallback already provides this when hovered or captured)
if (is_app_focused && bd->MouseWindow == nullptr)
{
double mouse_x, mouse_y;
glfwGetCursorPos(bd->Window, &mouse_x, &mouse_y);
io.AddMousePosEvent((float)mouse_x, (float)mouse_y);
bd->LastValidMousePos = ImVec2((float)mouse_x, (float)mouse_y);
}
}
}
static void ImGui_ImplGlfw_UpdateMouseCursor()
{
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
if ((io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange) || glfwGetInputMode(bd->Window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED)
return;
ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();
if (imgui_cursor == ImGuiMouseCursor_None || io.MouseDrawCursor)
{
// Hide OS mouse cursor if imgui is drawing it or if it wants no cursor
glfwSetInputMode(bd->Window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
}
else
{
// Show OS mouse cursor
// FIXME-PLATFORM: Unfocused windows seems to fail changing the mouse cursor with GLFW 3.2, but 3.3 works here.
glfwSetCursor(bd->Window, bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow]);
glfwSetInputMode(bd->Window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
}
}
// Update gamepad inputs
static inline float Saturate(float v) { return v < 0.0f ? 0.0f : v > 1.0f ? 1.0f : v; }
static void ImGui_ImplGlfw_UpdateGamepads()
{
ImGuiIO& io = ImGui::GetIO();
if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0) // FIXME: Technically feeding gamepad shouldn't depend on this now that they are regular inputs.
return;
io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
#if GLFW_HAS_GAMEPAD_API
GLFWgamepadstate gamepad;
if (!glfwGetGamepadState(GLFW_JOYSTICK_1, &gamepad))
return;
#define MAP_BUTTON(KEY_NO, BUTTON_NO, _UNUSED) do { io.AddKeyEvent(KEY_NO, gamepad.buttons[BUTTON_NO] != 0); } while (0)
#define MAP_ANALOG(KEY_NO, AXIS_NO, _UNUSED, V0, V1) do { float v = gamepad.axes[AXIS_NO]; v = (v - V0) / (V1 - V0); io.AddKeyAnalogEvent(KEY_NO, v > 0.10f, Saturate(v)); } while (0)
#else
int axes_count = 0, buttons_count = 0;
const float* axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &axes_count);
const unsigned char* buttons = glfwGetJoystickButtons(GLFW_JOYSTICK_1, &buttons_count);
if (axes_count == 0 || buttons_count == 0)
return;
#define MAP_BUTTON(KEY_NO, _UNUSED, BUTTON_NO) do { io.AddKeyEvent(KEY_NO, (buttons_count > BUTTON_NO && buttons[BUTTON_NO] == GLFW_PRESS)); } while (0)
#define MAP_ANALOG(KEY_NO, _UNUSED, AXIS_NO, V0, V1) do { float v = (axes_count > AXIS_NO) ? axes[AXIS_NO] : V0; v = (v - V0) / (V1 - V0); io.AddKeyAnalogEvent(KEY_NO, v > 0.10f, Saturate(v)); } while (0)
#endif
io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
MAP_BUTTON(ImGuiKey_GamepadStart, GLFW_GAMEPAD_BUTTON_START, 7);
MAP_BUTTON(ImGuiKey_GamepadBack, GLFW_GAMEPAD_BUTTON_BACK, 6);
MAP_BUTTON(ImGuiKey_GamepadFaceLeft, GLFW_GAMEPAD_BUTTON_X, 2); // Xbox X, PS Square
MAP_BUTTON(ImGuiKey_GamepadFaceRight, GLFW_GAMEPAD_BUTTON_B, 1); // Xbox B, PS Circle
MAP_BUTTON(ImGuiKey_GamepadFaceUp, GLFW_GAMEPAD_BUTTON_Y, 3); // Xbox Y, PS Triangle
MAP_BUTTON(ImGuiKey_GamepadFaceDown, GLFW_GAMEPAD_BUTTON_A, 0); // Xbox A, PS Cross
MAP_BUTTON(ImGuiKey_GamepadDpadLeft, GLFW_GAMEPAD_BUTTON_DPAD_LEFT, 13);
MAP_BUTTON(ImGuiKey_GamepadDpadRight, GLFW_GAMEPAD_BUTTON_DPAD_RIGHT, 11);
MAP_BUTTON(ImGuiKey_GamepadDpadUp, GLFW_GAMEPAD_BUTTON_DPAD_UP, 10);
MAP_BUTTON(ImGuiKey_GamepadDpadDown, GLFW_GAMEPAD_BUTTON_DPAD_DOWN, 12);
MAP_BUTTON(ImGuiKey_GamepadL1, GLFW_GAMEPAD_BUTTON_LEFT_BUMPER, 4);
MAP_BUTTON(ImGuiKey_GamepadR1, GLFW_GAMEPAD_BUTTON_RIGHT_BUMPER, 5);
MAP_ANALOG(ImGuiKey_GamepadL2, GLFW_GAMEPAD_AXIS_LEFT_TRIGGER, 4, -0.75f, +1.0f);
MAP_ANALOG(ImGuiKey_GamepadR2, GLFW_GAMEPAD_AXIS_RIGHT_TRIGGER, 5, -0.75f, +1.0f);
MAP_BUTTON(ImGuiKey_GamepadL3, GLFW_GAMEPAD_BUTTON_LEFT_THUMB, 8);
MAP_BUTTON(ImGuiKey_GamepadR3, GLFW_GAMEPAD_BUTTON_RIGHT_THUMB, 9);
MAP_ANALOG(ImGuiKey_GamepadLStickLeft, GLFW_GAMEPAD_AXIS_LEFT_X, 0, -0.25f, -1.0f);
MAP_ANALOG(ImGuiKey_GamepadLStickRight, GLFW_GAMEPAD_AXIS_LEFT_X, 0, +0.25f, +1.0f);
MAP_ANALOG(ImGuiKey_GamepadLStickUp, GLFW_GAMEPAD_AXIS_LEFT_Y, 1, -0.25f, -1.0f);
MAP_ANALOG(ImGuiKey_GamepadLStickDown, GLFW_GAMEPAD_AXIS_LEFT_Y, 1, +0.25f, +1.0f);
MAP_ANALOG(ImGuiKey_GamepadRStickLeft, GLFW_GAMEPAD_AXIS_RIGHT_X, 2, -0.25f, -1.0f);
MAP_ANALOG(ImGuiKey_GamepadRStickRight, GLFW_GAMEPAD_AXIS_RIGHT_X, 2, +0.25f, +1.0f);
MAP_ANALOG(ImGuiKey_GamepadRStickUp, GLFW_GAMEPAD_AXIS_RIGHT_Y, 3, -0.25f, -1.0f);
MAP_ANALOG(ImGuiKey_GamepadRStickDown, GLFW_GAMEPAD_AXIS_RIGHT_Y, 3, +0.25f, +1.0f);
#undef MAP_BUTTON
#undef MAP_ANALOG
}
void ImGui_ImplGlfw_NewFrame()
{
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData();
IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplGlfw_InitForXXX()?");
// Setup display size (every frame to accommodate for window resizing)
int w, h;
int display_w, display_h;
glfwGetWindowSize(bd->Window, &w, &h);
glfwGetFramebufferSize(bd->Window, &display_w, &display_h);
io.DisplaySize = ImVec2((float)w, (float)h);
if (w > 0 && h > 0)
io.DisplayFramebufferScale = ImVec2((float)display_w / (float)w, (float)display_h / (float)h);
// Setup time step
double current_time = glfwGetTime();
io.DeltaTime = bd->Time > 0.0 ? (float)(current_time - bd->Time) : (float)(1.0f / 60.0f);
bd->Time = current_time;
ImGui_ImplGlfw_UpdateMouseData();
ImGui_ImplGlfw_UpdateMouseCursor();
// Update game controllers (if enabled and available)
ImGui_ImplGlfw_UpdateGamepads();
}
#if defined(__clang__)
#pragma clang diagnostic pop
#endif

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// dear imgui: Platform Backend for GLFW
// This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan, WebGPU..)
// (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
// Implemented features:
// [X] Platform: Clipboard support.
// [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy GLFW_KEY_* values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]
// [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
// [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange' (note: the resizing cursors requires GLFW 3.4+).
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
#pragma once
#include "imgui.h" // IMGUI_IMPL_API
struct GLFWwindow;
struct GLFWmonitor;
IMGUI_IMPL_API bool ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks);
IMGUI_IMPL_API bool ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks);
IMGUI_IMPL_API bool ImGui_ImplGlfw_InitForOther(GLFWwindow* window, bool install_callbacks);
IMGUI_IMPL_API void ImGui_ImplGlfw_Shutdown();
IMGUI_IMPL_API void ImGui_ImplGlfw_NewFrame();
// GLFW callbacks (installer)
// - When calling Init with 'install_callbacks=true': ImGui_ImplGlfw_InstallCallbacks() is called. GLFW callbacks will be installed for you. They will chain-call user's previously installed callbacks, if any.
// - When calling Init with 'install_callbacks=false': GLFW callbacks won't be installed. You will need to call individual function yourself from your own GLFW callbacks.
IMGUI_IMPL_API void ImGui_ImplGlfw_InstallCallbacks(GLFWwindow* window);
IMGUI_IMPL_API void ImGui_ImplGlfw_RestoreCallbacks(GLFWwindow* window);
// GLFW callbacks (individual callbacks to call if you didn't install callbacks)
IMGUI_IMPL_API void ImGui_ImplGlfw_WindowFocusCallback(GLFWwindow* window, int focused); // Since 1.84
IMGUI_IMPL_API void ImGui_ImplGlfw_CursorEnterCallback(GLFWwindow* window, int entered); // Since 1.84
IMGUI_IMPL_API void ImGui_ImplGlfw_CursorPosCallback(GLFWwindow* window, double x, double y); // Since 1.87
IMGUI_IMPL_API void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
IMGUI_IMPL_API void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
IMGUI_IMPL_API void ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
IMGUI_IMPL_API void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c);
IMGUI_IMPL_API void ImGui_ImplGlfw_MonitorCallback(GLFWmonitor* monitor, int event);

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// dear imgui: Platform Backend for GLUT/FreeGLUT
// This needs to be used along with a Renderer (e.g. OpenGL2)
// !!! GLUT/FreeGLUT IS OBSOLETE PREHISTORIC SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!!
// !!! If someone or something is teaching you GLUT today, you are being abused. Please show some resistance. !!!
// !!! Nowadays, prefer using GLFW or SDL instead!
// Implemented features:
// [X] Platform: Partial keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy GLUT values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]
// Issues:
// [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I
// [ ] Platform: Missing mouse cursor shape/visibility support.
// [ ] Platform: Missing clipboard support (not supported by Glut).
// [ ] Platform: Missing gamepad support.
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2022-09-26: Inputs: Renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported).
// 2022-01-26: Inputs: replaced short-lived io.AddKeyModsEvent() (added two weeks ago) with io.AddKeyEvent() using ImGuiKey_ModXXX flags. Sorry for the confusion.
// 2022-01-17: Inputs: calling new io.AddMousePosEvent(), io.AddMouseButtonEvent(), io.AddMouseWheelEvent() API (1.87+).
// 2022-01-10: Inputs: calling new io.AddKeyEvent(), io.AddKeyModsEvent() + io.SetKeyEventNativeData() API (1.87+). Support for full ImGuiKey range.
// 2019-04-03: Misc: Renamed imgui_impl_freeglut.cpp/.h to imgui_impl_glut.cpp/.h.
// 2019-03-25: Misc: Made io.DeltaTime always above zero.
// 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
// 2018-03-22: Added GLUT Platform binding.
#include "imgui.h"
#include "imgui_impl_glut.h"
#define GL_SILENCE_DEPRECATION
#ifdef __APPLE__
#include <GLUT/glut.h>
#else
#include <GL/freeglut.h>
#endif
#ifdef _MSC_VER
#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
#endif
static int g_Time = 0; // Current time, in milliseconds
// Glut has 1 function for characters and one for "special keys". We map the characters in the 0..255 range and the keys above.
static ImGuiKey ImGui_ImplGLUT_KeyToImGuiKey(int key)
{
switch (key)
{
case '\t': return ImGuiKey_Tab;
case 256 + GLUT_KEY_LEFT: return ImGuiKey_LeftArrow;
case 256 + GLUT_KEY_RIGHT: return ImGuiKey_RightArrow;
case 256 + GLUT_KEY_UP: return ImGuiKey_UpArrow;
case 256 + GLUT_KEY_DOWN: return ImGuiKey_DownArrow;
case 256 + GLUT_KEY_PAGE_UP: return ImGuiKey_PageUp;
case 256 + GLUT_KEY_PAGE_DOWN: return ImGuiKey_PageDown;
case 256 + GLUT_KEY_HOME: return ImGuiKey_Home;
case 256 + GLUT_KEY_END: return ImGuiKey_End;
case 256 + GLUT_KEY_INSERT: return ImGuiKey_Insert;
case 127: return ImGuiKey_Delete;
case 8: return ImGuiKey_Backspace;
case ' ': return ImGuiKey_Space;
case 13: return ImGuiKey_Enter;
case 27: return ImGuiKey_Escape;
case 39: return ImGuiKey_Apostrophe;
case 44: return ImGuiKey_Comma;
case 45: return ImGuiKey_Minus;
case 46: return ImGuiKey_Period;
case 47: return ImGuiKey_Slash;
case 59: return ImGuiKey_Semicolon;
case 61: return ImGuiKey_Equal;
case 91: return ImGuiKey_LeftBracket;
case 92: return ImGuiKey_Backslash;
case 93: return ImGuiKey_RightBracket;
case 96: return ImGuiKey_GraveAccent;
//case 0: return ImGuiKey_CapsLock;
//case 0: return ImGuiKey_ScrollLock;
case 256 + 0x006D: return ImGuiKey_NumLock;
//case 0: return ImGuiKey_PrintScreen;
//case 0: return ImGuiKey_Pause;
//case '0': return ImGuiKey_Keypad0;
//case '1': return ImGuiKey_Keypad1;
//case '2': return ImGuiKey_Keypad2;
//case '3': return ImGuiKey_Keypad3;
//case '4': return ImGuiKey_Keypad4;
//case '5': return ImGuiKey_Keypad5;
//case '6': return ImGuiKey_Keypad6;
//case '7': return ImGuiKey_Keypad7;
//case '8': return ImGuiKey_Keypad8;
//case '9': return ImGuiKey_Keypad9;
//case 46: return ImGuiKey_KeypadDecimal;
//case 47: return ImGuiKey_KeypadDivide;
case 42: return ImGuiKey_KeypadMultiply;
//case 45: return ImGuiKey_KeypadSubtract;
case 43: return ImGuiKey_KeypadAdd;
//case 13: return ImGuiKey_KeypadEnter;
//case 0: return ImGuiKey_KeypadEqual;
case 256 + 0x0072: return ImGuiKey_LeftCtrl;
case 256 + 0x0070: return ImGuiKey_LeftShift;
case 256 + 0x0074: return ImGuiKey_LeftAlt;
//case 0: return ImGuiKey_LeftSuper;
case 256 + 0x0073: return ImGuiKey_RightCtrl;
case 256 + 0x0071: return ImGuiKey_RightShift;
case 256 + 0x0075: return ImGuiKey_RightAlt;
//case 0: return ImGuiKey_RightSuper;
//case 0: return ImGuiKey_Menu;
case '0': return ImGuiKey_0;
case '1': return ImGuiKey_1;
case '2': return ImGuiKey_2;
case '3': return ImGuiKey_3;
case '4': return ImGuiKey_4;
case '5': return ImGuiKey_5;
case '6': return ImGuiKey_6;
case '7': return ImGuiKey_7;
case '8': return ImGuiKey_8;
case '9': return ImGuiKey_9;
case 'A': case 'a': return ImGuiKey_A;
case 'B': case 'b': return ImGuiKey_B;
case 'C': case 'c': return ImGuiKey_C;
case 'D': case 'd': return ImGuiKey_D;
case 'E': case 'e': return ImGuiKey_E;
case 'F': case 'f': return ImGuiKey_F;
case 'G': case 'g': return ImGuiKey_G;
case 'H': case 'h': return ImGuiKey_H;
case 'I': case 'i': return ImGuiKey_I;
case 'J': case 'j': return ImGuiKey_J;
case 'K': case 'k': return ImGuiKey_K;
case 'L': case 'l': return ImGuiKey_L;
case 'M': case 'm': return ImGuiKey_M;
case 'N': case 'n': return ImGuiKey_N;
case 'O': case 'o': return ImGuiKey_O;
case 'P': case 'p': return ImGuiKey_P;
case 'Q': case 'q': return ImGuiKey_Q;
case 'R': case 'r': return ImGuiKey_R;
case 'S': case 's': return ImGuiKey_S;
case 'T': case 't': return ImGuiKey_T;
case 'U': case 'u': return ImGuiKey_U;
case 'V': case 'v': return ImGuiKey_V;
case 'W': case 'w': return ImGuiKey_W;
case 'X': case 'x': return ImGuiKey_X;
case 'Y': case 'y': return ImGuiKey_Y;
case 'Z': case 'z': return ImGuiKey_Z;
case 256 + GLUT_KEY_F1: return ImGuiKey_F1;
case 256 + GLUT_KEY_F2: return ImGuiKey_F2;
case 256 + GLUT_KEY_F3: return ImGuiKey_F3;
case 256 + GLUT_KEY_F4: return ImGuiKey_F4;
case 256 + GLUT_KEY_F5: return ImGuiKey_F5;
case 256 + GLUT_KEY_F6: return ImGuiKey_F6;
case 256 + GLUT_KEY_F7: return ImGuiKey_F7;
case 256 + GLUT_KEY_F8: return ImGuiKey_F8;
case 256 + GLUT_KEY_F9: return ImGuiKey_F9;
case 256 + GLUT_KEY_F10: return ImGuiKey_F10;
case 256 + GLUT_KEY_F11: return ImGuiKey_F11;
case 256 + GLUT_KEY_F12: return ImGuiKey_F12;
default: return ImGuiKey_None;
}
}
bool ImGui_ImplGLUT_Init()
{
ImGuiIO& io = ImGui::GetIO();
#ifdef FREEGLUT
io.BackendPlatformName = "imgui_impl_glut (freeglut)";
#else
io.BackendPlatformName = "imgui_impl_glut";
#endif
g_Time = 0;
return true;
}
void ImGui_ImplGLUT_InstallFuncs()
{
glutReshapeFunc(ImGui_ImplGLUT_ReshapeFunc);
glutMotionFunc(ImGui_ImplGLUT_MotionFunc);
glutPassiveMotionFunc(ImGui_ImplGLUT_MotionFunc);
glutMouseFunc(ImGui_ImplGLUT_MouseFunc);
#ifdef __FREEGLUT_EXT_H__
glutMouseWheelFunc(ImGui_ImplGLUT_MouseWheelFunc);
#endif
glutKeyboardFunc(ImGui_ImplGLUT_KeyboardFunc);
glutKeyboardUpFunc(ImGui_ImplGLUT_KeyboardUpFunc);
glutSpecialFunc(ImGui_ImplGLUT_SpecialFunc);
glutSpecialUpFunc(ImGui_ImplGLUT_SpecialUpFunc);
}
void ImGui_ImplGLUT_Shutdown()
{
}
void ImGui_ImplGLUT_NewFrame()
{
// Setup time step
ImGuiIO& io = ImGui::GetIO();
int current_time = glutGet(GLUT_ELAPSED_TIME);
int delta_time_ms = (current_time - g_Time);
if (delta_time_ms <= 0)
delta_time_ms = 1;
io.DeltaTime = delta_time_ms / 1000.0f;
g_Time = current_time;
// Start the frame
ImGui::NewFrame();
}
static void ImGui_ImplGLUT_UpdateKeyModifiers()
{
ImGuiIO& io = ImGui::GetIO();
int glut_key_mods = glutGetModifiers();
io.AddKeyEvent(ImGuiMod_Ctrl, (glut_key_mods & GLUT_ACTIVE_CTRL) != 0);
io.AddKeyEvent(ImGuiMod_Shift, (glut_key_mods & GLUT_ACTIVE_SHIFT) != 0);
io.AddKeyEvent(ImGuiMod_Alt, (glut_key_mods & GLUT_ACTIVE_ALT) != 0);
}
static void ImGui_ImplGLUT_AddKeyEvent(ImGuiKey key, bool down, int native_keycode)
{
ImGuiIO& io = ImGui::GetIO();
io.AddKeyEvent(key, down);
io.SetKeyEventNativeData(key, native_keycode, -1); // To support legacy indexing (<1.87 user code)
}
void ImGui_ImplGLUT_KeyboardFunc(unsigned char c, int x, int y)
{
// Send character to imgui
//printf("char_down_func %d '%c'\n", c, c);
ImGuiIO& io = ImGui::GetIO();
if (c >= 32)
io.AddInputCharacter((unsigned int)c);
ImGuiKey key = ImGui_ImplGLUT_KeyToImGuiKey(c);
ImGui_ImplGLUT_AddKeyEvent(key, true, c);
ImGui_ImplGLUT_UpdateKeyModifiers();
(void)x; (void)y; // Unused
}
void ImGui_ImplGLUT_KeyboardUpFunc(unsigned char c, int x, int y)
{
//printf("char_up_func %d '%c'\n", c, c);
ImGuiKey key = ImGui_ImplGLUT_KeyToImGuiKey(c);
ImGui_ImplGLUT_AddKeyEvent(key, false, c);
ImGui_ImplGLUT_UpdateKeyModifiers();
(void)x; (void)y; // Unused
}
void ImGui_ImplGLUT_SpecialFunc(int key, int x, int y)
{
//printf("key_down_func %d\n", key);
ImGuiKey imgui_key = ImGui_ImplGLUT_KeyToImGuiKey(key + 256);
ImGui_ImplGLUT_AddKeyEvent(imgui_key, true, key + 256);
ImGui_ImplGLUT_UpdateKeyModifiers();
(void)x; (void)y; // Unused
}
void ImGui_ImplGLUT_SpecialUpFunc(int key, int x, int y)
{
//printf("key_up_func %d\n", key);
ImGuiKey imgui_key = ImGui_ImplGLUT_KeyToImGuiKey(key + 256);
ImGui_ImplGLUT_AddKeyEvent(imgui_key, false, key + 256);
ImGui_ImplGLUT_UpdateKeyModifiers();
(void)x; (void)y; // Unused
}
void ImGui_ImplGLUT_MouseFunc(int glut_button, int state, int x, int y)
{
ImGuiIO& io = ImGui::GetIO();
io.AddMousePosEvent((float)x, (float)y);
int button = -1;
if (glut_button == GLUT_LEFT_BUTTON) button = 0;
if (glut_button == GLUT_RIGHT_BUTTON) button = 1;
if (glut_button == GLUT_MIDDLE_BUTTON) button = 2;
if (button != -1 && (state == GLUT_DOWN || state == GLUT_UP))
io.AddMouseButtonEvent(button, state == GLUT_DOWN);
}
#ifdef __FREEGLUT_EXT_H__
void ImGui_ImplGLUT_MouseWheelFunc(int button, int dir, int x, int y)
{
ImGuiIO& io = ImGui::GetIO();
io.AddMousePosEvent((float)x, (float)y);
if (dir != 0)
io.AddMouseWheelEvent(0.0f, dir > 0 ? 1.0f : -1.0f);
(void)button; // Unused
}
#endif
void ImGui_ImplGLUT_ReshapeFunc(int w, int h)
{
ImGuiIO& io = ImGui::GetIO();
io.DisplaySize = ImVec2((float)w, (float)h);
}
void ImGui_ImplGLUT_MotionFunc(int x, int y)
{
ImGuiIO& io = ImGui::GetIO();
io.AddMousePosEvent((float)x, (float)y);
}

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// dear imgui: Platform Backend for GLUT/FreeGLUT
// This needs to be used along with a Renderer (e.g. OpenGL2)
// !!! GLUT/FreeGLUT IS OBSOLETE PREHISTORIC SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!!
// !!! If someone or something is teaching you GLUT today, you are being abused. Please show some resistance. !!!
// !!! Nowadays, prefer using GLFW or SDL instead!
// Implemented features:
// [X] Platform: Partial keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy GLUT values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]
// Issues:
// [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I
// [ ] Platform: Missing mouse cursor shape/visibility support.
// [ ] Platform: Missing clipboard support (not supported by Glut).
// [ ] Platform: Missing gamepad support.
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
#pragma once
#include "imgui.h" // IMGUI_IMPL_API
IMGUI_IMPL_API bool ImGui_ImplGLUT_Init();
IMGUI_IMPL_API void ImGui_ImplGLUT_InstallFuncs();
IMGUI_IMPL_API void ImGui_ImplGLUT_Shutdown();
IMGUI_IMPL_API void ImGui_ImplGLUT_NewFrame();
// You can call ImGui_ImplGLUT_InstallFuncs() to get all those functions installed automatically,
// or call them yourself from your own GLUT handlers. We are using the same weird names as GLUT for consistency..
//---------------------------------------- GLUT name --------------------------------------------- Decent Name ---------
IMGUI_IMPL_API void ImGui_ImplGLUT_ReshapeFunc(int w, int h); // ~ ResizeFunc
IMGUI_IMPL_API void ImGui_ImplGLUT_MotionFunc(int x, int y); // ~ MouseMoveFunc
IMGUI_IMPL_API void ImGui_ImplGLUT_MouseFunc(int button, int state, int x, int y); // ~ MouseButtonFunc
IMGUI_IMPL_API void ImGui_ImplGLUT_MouseWheelFunc(int button, int dir, int x, int y); // ~ MouseWheelFunc
IMGUI_IMPL_API void ImGui_ImplGLUT_KeyboardFunc(unsigned char c, int x, int y); // ~ CharPressedFunc
IMGUI_IMPL_API void ImGui_ImplGLUT_KeyboardUpFunc(unsigned char c, int x, int y); // ~ CharReleasedFunc
IMGUI_IMPL_API void ImGui_ImplGLUT_SpecialFunc(int key, int x, int y); // ~ KeyPressedFunc
IMGUI_IMPL_API void ImGui_ImplGLUT_SpecialUpFunc(int key, int x, int y); // ~ KeyReleasedFunc

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// dear imgui: Renderer Backend for modern OpenGL with shaders / programmatic pipeline
// - Desktop GL: 2.x 3.x 4.x
// - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0)
// This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..)
// Implemented features:
// [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
// [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bit indices.
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2022-11-09: OpenGL: Reverted use of glBufferSubData(), too many corruptions issues + old issues seemingly can't be reproed with Intel drivers nowadays (revert 2021-12-15 and 2022-05-23 changes).
// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
// 2022-09-27: OpenGL: Added ability to '#define IMGUI_IMPL_OPENGL_DEBUG'.
// 2022-05-23: OpenGL: Reworking 2021-12-15 "Using buffer orphaning" so it only happens on Intel GPU, seems to cause problems otherwise. (#4468, #4825, #4832, #5127).
// 2022-05-13: OpenGL: Fix state corruption on OpenGL ES 2.0 due to not preserving GL_ELEMENT_ARRAY_BUFFER_BINDING and vertex attribute states.
// 2021-12-15: OpenGL: Using buffer orphaning + glBufferSubData(), seems to fix leaks with multi-viewports with some Intel HD drivers.
// 2021-08-23: OpenGL: Fixed ES 3.0 shader ("#version 300 es") use normal precision floats to avoid wobbly rendering at HD resolutions.
// 2021-08-19: OpenGL: Embed and use our own minimal GL loader (imgui_impl_opengl3_loader.h), removing requirement and support for third-party loader.
// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
// 2021-06-25: OpenGL: Use OES_vertex_array extension on Emscripten + backup/restore current state.
// 2021-06-21: OpenGL: Destroy individual vertex/fragment shader objects right after they are linked into the main shader.
// 2021-05-24: OpenGL: Access GL_CLIP_ORIGIN when "GL_ARB_clip_control" extension is detected, inside of just OpenGL 4.5 version.
// 2021-05-19: OpenGL: Replaced direct access to ImDrawCmd::TextureId with a call to ImDrawCmd::GetTexID(). (will become a requirement)
// 2021-04-06: OpenGL: Don't try to read GL_CLIP_ORIGIN unless we're OpenGL 4.5 or greater.
// 2021-02-18: OpenGL: Change blending equation to preserve alpha in output buffer.
// 2021-01-03: OpenGL: Backup, setup and restore GL_STENCIL_TEST state.
// 2020-10-23: OpenGL: Backup, setup and restore GL_PRIMITIVE_RESTART state.
// 2020-10-15: OpenGL: Use glGetString(GL_VERSION) instead of glGetIntegerv(GL_MAJOR_VERSION, ...) when the later returns zero (e.g. Desktop GL 2.x)
// 2020-09-17: OpenGL: Fix to avoid compiling/calling glBindSampler() on ES or pre 3.3 context which have the defines set by a loader.
// 2020-07-10: OpenGL: Added support for glad2 OpenGL loader.
// 2020-05-08: OpenGL: Made default GLSL version 150 (instead of 130) on OSX.
// 2020-04-21: OpenGL: Fixed handling of glClipControl(GL_UPPER_LEFT) by inverting projection matrix.
// 2020-04-12: OpenGL: Fixed context version check mistakenly testing for 4.0+ instead of 3.2+ to enable ImGuiBackendFlags_RendererHasVtxOffset.
// 2020-03-24: OpenGL: Added support for glbinding 2.x OpenGL loader.
// 2020-01-07: OpenGL: Added support for glbinding 3.x OpenGL loader.
// 2019-10-25: OpenGL: Using a combination of GL define and runtime GL version to decide whether to use glDrawElementsBaseVertex(). Fix building with pre-3.2 GL loaders.
// 2019-09-22: OpenGL: Detect default GL loader using __has_include compiler facility.
// 2019-09-16: OpenGL: Tweak initialization code to allow application calling ImGui_ImplOpenGL3_CreateFontsTexture() before the first NewFrame() call.
// 2019-05-29: OpenGL: Desktop GL only: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
// 2019-04-30: OpenGL: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
// 2019-03-29: OpenGL: Not calling glBindBuffer more than necessary in the render loop.
// 2019-03-15: OpenGL: Added a GL call + comments in ImGui_ImplOpenGL3_Init() to detect uninitialized GL function loaders early.
// 2019-03-03: OpenGL: Fix support for ES 2.0 (WebGL 1.0).
// 2019-02-20: OpenGL: Fix for OSX not supporting OpenGL 4.5, we don't try to read GL_CLIP_ORIGIN even if defined by the headers/loader.
// 2019-02-11: OpenGL: Projecting clipping rectangles correctly using draw_data->FramebufferScale to allow multi-viewports for retina display.
// 2019-02-01: OpenGL: Using GLSL 410 shaders for any version over 410 (e.g. 430, 450).
// 2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
// 2018-11-13: OpenGL: Support for GL 4.5's glClipControl(GL_UPPER_LEFT) / GL_CLIP_ORIGIN.
// 2018-08-29: OpenGL: Added support for more OpenGL loaders: glew and glad, with comments indicative that any loader can be used.
// 2018-08-09: OpenGL: Default to OpenGL ES 3 on iOS and Android. GLSL version default to "#version 300 ES".
// 2018-07-30: OpenGL: Support for GLSL 300 ES and 410 core. Fixes for Emscripten compilation.
// 2018-07-10: OpenGL: Support for more GLSL versions (based on the GLSL version string). Added error output when shaders fail to compile/link.
// 2018-06-08: Misc: Extracted imgui_impl_opengl3.cpp/.h away from the old combined GLFW/SDL+OpenGL3 examples.
// 2018-06-08: OpenGL: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
// 2018-05-25: OpenGL: Removed unnecessary backup/restore of GL_ELEMENT_ARRAY_BUFFER_BINDING since this is part of the VAO state.
// 2018-05-14: OpenGL: Making the call to glBindSampler() optional so 3.2 context won't fail if the function is a nullptr pointer.
// 2018-03-06: OpenGL: Added const char* glsl_version parameter to ImGui_ImplOpenGL3_Init() so user can override the GLSL version e.g. "#version 150".
// 2018-02-23: OpenGL: Create the VAO in the render function so the setup can more easily be used with multiple shared GL context.
// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplSdlGL3_RenderDrawData() in the .h file so you can call it yourself.
// 2018-01-07: OpenGL: Changed GLSL shader version from 330 to 150.
// 2017-09-01: OpenGL: Save and restore current bound sampler. Save and restore current polygon mode.
// 2017-05-01: OpenGL: Fixed save and restore of current blend func state.
// 2017-05-01: OpenGL: Fixed save and restore of current GL_ACTIVE_TEXTURE.
// 2016-09-05: OpenGL: Fixed save and restore of current scissor rectangle.
// 2016-07-29: OpenGL: Explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752)
//----------------------------------------
// OpenGL GLSL GLSL
// version version string
//----------------------------------------
// 2.0 110 "#version 110"
// 2.1 120 "#version 120"
// 3.0 130 "#version 130"
// 3.1 140 "#version 140"
// 3.2 150 "#version 150"
// 3.3 330 "#version 330 core"
// 4.0 400 "#version 400 core"
// 4.1 410 "#version 410 core"
// 4.2 420 "#version 410 core"
// 4.3 430 "#version 430 core"
// ES 2.0 100 "#version 100" = WebGL 1.0
// ES 3.0 300 "#version 300 es" = WebGL 2.0
//----------------------------------------
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
#define _CRT_SECURE_NO_WARNINGS
#endif
#include "imgui.h"
#include "imgui_impl_opengl3.h"
#include <stdio.h>
#if defined(_MSC_VER) && _MSC_VER <= 1500 // MSVC 2008 or earlier
#include <stddef.h> // intptr_t
#else
#include <stdint.h> // intptr_t
#endif
#if defined(__APPLE__)
#include <TargetConditionals.h>
#endif
// Clang warnings with -Weverything
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast
#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness
#endif
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-function-type" // warning: cast between incompatible function types
#endif
// GL includes
#if defined(IMGUI_IMPL_OPENGL_ES2)
#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV))
#include <OpenGLES/ES2/gl.h> // Use GL ES 2
#else
#include <GLES2/gl2.h> // Use GL ES 2
#endif
#if defined(__EMSCRIPTEN__)
#ifndef GL_GLEXT_PROTOTYPES
#define GL_GLEXT_PROTOTYPES
#endif
#include <GLES2/gl2ext.h>
#endif
#elif defined(IMGUI_IMPL_OPENGL_ES3)
#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV))
#include <OpenGLES/ES3/gl.h> // Use GL ES 3
#else
#include <GLES3/gl3.h> // Use GL ES 3
#endif
#elif !defined(IMGUI_IMPL_OPENGL_LOADER_CUSTOM)
// Modern desktop OpenGL doesn't have a standard portable header file to load OpenGL function pointers.
// Helper libraries are often used for this purpose! Here we are using our own minimal custom loader based on gl3w.
// In the rest of your app/engine, you can use another loader of your choice (gl3w, glew, glad, glbinding, glext, glLoadGen, etc.).
// If you happen to be developing a new feature for this backend (imgui_impl_opengl3.cpp):
// - You may need to regenerate imgui_impl_opengl3_loader.h to add new symbols. See https://github.com/dearimgui/gl3w_stripped
// - You can temporarily use an unstripped version. See https://github.com/dearimgui/gl3w_stripped/releases
// Changes to this backend using new APIs should be accompanied by a regenerated stripped loader version.
#define IMGL3W_IMPL
#include "imgui_impl_opengl3_loader.h"
#endif
// Vertex arrays are not supported on ES2/WebGL1 unless Emscripten which uses an extension
#ifndef IMGUI_IMPL_OPENGL_ES2
#define IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
#elif defined(__EMSCRIPTEN__)
#define IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
#define glBindVertexArray glBindVertexArrayOES
#define glGenVertexArrays glGenVertexArraysOES
#define glDeleteVertexArrays glDeleteVertexArraysOES
#define GL_VERTEX_ARRAY_BINDING GL_VERTEX_ARRAY_BINDING_OES
#endif
// Desktop GL 2.0+ has glPolygonMode() which GL ES and WebGL don't have.
#ifdef GL_POLYGON_MODE
#define IMGUI_IMPL_HAS_POLYGON_MODE
#endif
// Desktop GL 3.2+ has glDrawElementsBaseVertex() which GL ES and WebGL don't have.
#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_2)
#define IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
#endif
// Desktop GL 3.3+ has glBindSampler()
#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_3)
#define IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
#endif
// Desktop GL 3.1+ has GL_PRIMITIVE_RESTART state
#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_1)
#define IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
#endif
// Desktop GL use extension detection
#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3)
#define IMGUI_IMPL_OPENGL_MAY_HAVE_EXTENSIONS
#endif
// [Debugging]
//#define IMGUI_IMPL_OPENGL_DEBUG
#ifdef IMGUI_IMPL_OPENGL_DEBUG
#include <stdio.h>
#define GL_CALL(_CALL) do { _CALL; GLenum gl_err = glGetError(); if (gl_err != 0) fprintf(stderr, "GL error 0x%x returned from '%s'.\n", gl_err, #_CALL); } while (0) // Call with error check
#else
#define GL_CALL(_CALL) _CALL // Call without error check
#endif
// OpenGL Data
struct ImGui_ImplOpenGL3_Data
{
GLuint GlVersion; // Extracted at runtime using GL_MAJOR_VERSION, GL_MINOR_VERSION queries (e.g. 320 for GL 3.2)
char GlslVersionString[32]; // Specified by user or detected based on compile time GL settings.
GLuint FontTexture;
GLuint ShaderHandle;
GLint AttribLocationTex; // Uniforms location
GLint AttribLocationProjMtx;
GLuint AttribLocationVtxPos; // Vertex attributes location
GLuint AttribLocationVtxUV;
GLuint AttribLocationVtxColor;
unsigned int VboHandle, ElementsHandle;
GLsizeiptr VertexBufferSize;
GLsizeiptr IndexBufferSize;
bool HasClipOrigin;
bool UseBufferSubData;
ImGui_ImplOpenGL3_Data() { memset((void*)this, 0, sizeof(*this)); }
};
// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
static ImGui_ImplOpenGL3_Data* ImGui_ImplOpenGL3_GetBackendData()
{
return ImGui::GetCurrentContext() ? (ImGui_ImplOpenGL3_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
}
// OpenGL vertex attribute state (for ES 1.0 and ES 2.0 only)
#ifndef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
struct ImGui_ImplOpenGL3_VtxAttribState
{
GLint Enabled, Size, Type, Normalized, Stride;
GLvoid* Ptr;
void GetState(GLint index)
{
glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_ENABLED, &Enabled);
glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_SIZE, &Size);
glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_TYPE, &Type);
glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_NORMALIZED, &Normalized);
glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_STRIDE, &Stride);
glGetVertexAttribPointerv(index, GL_VERTEX_ATTRIB_ARRAY_POINTER, &Ptr);
}
void SetState(GLint index)
{
glVertexAttribPointer(index, Size, Type, (GLboolean)Normalized, Stride, Ptr);
if (Enabled) glEnableVertexAttribArray(index); else glDisableVertexAttribArray(index);
}
};
#endif
// Functions
bool ImGui_ImplOpenGL3_Init(const char* glsl_version)
{
ImGuiIO& io = ImGui::GetIO();
IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
// Initialize our loader
#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && !defined(IMGUI_IMPL_OPENGL_LOADER_CUSTOM)
if (imgl3wInit() != 0)
{
fprintf(stderr, "Failed to initialize OpenGL loader!\n");
return false;
}
#endif
// Setup backend capabilities flags
ImGui_ImplOpenGL3_Data* bd = IM_NEW(ImGui_ImplOpenGL3_Data)();
io.BackendRendererUserData = (void*)bd;
io.BackendRendererName = "imgui_impl_opengl3";
// Query for GL version (e.g. 320 for GL 3.2)
#if !defined(IMGUI_IMPL_OPENGL_ES2)
GLint major = 0;
GLint minor = 0;
glGetIntegerv(GL_MAJOR_VERSION, &major);
glGetIntegerv(GL_MINOR_VERSION, &minor);
if (major == 0 && minor == 0)
{
// Query GL_VERSION in desktop GL 2.x, the string will start with "<major>.<minor>"
const char* gl_version = (const char*)glGetString(GL_VERSION);
sscanf(gl_version, "%d.%d", &major, &minor);
}
bd->GlVersion = (GLuint)(major * 100 + minor * 10);
bd->UseBufferSubData = false;
/*
// Query vendor to enable glBufferSubData kludge
#ifdef _WIN32
if (const char* vendor = (const char*)glGetString(GL_VENDOR))
if (strncmp(vendor, "Intel", 5) == 0)
bd->UseBufferSubData = true;
#endif
*/
#else
bd->GlVersion = 200; // GLES 2
#endif
#ifdef IMGUI_IMPL_OPENGL_DEBUG
printf("GL_MAJOR_VERSION = %d\nGL_MINOR_VERSION = %d\nGL_VENDOR = '%s'\nGL_RENDERER = '%s'\n", major, minor, (const char*)glGetString(GL_VENDOR), (const char*)glGetString(GL_RENDERER)); // [DEBUG]
#endif
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
if (bd->GlVersion >= 320)
io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
#endif
// Store GLSL version string so we can refer to it later in case we recreate shaders.
// Note: GLSL version is NOT the same as GL version. Leave this to nullptr if unsure.
if (glsl_version == nullptr)
{
#if defined(IMGUI_IMPL_OPENGL_ES2)
glsl_version = "#version 100";
#elif defined(IMGUI_IMPL_OPENGL_ES3)
glsl_version = "#version 300 es";
#elif defined(__APPLE__)
glsl_version = "#version 150";
#else
glsl_version = "#version 130";
#endif
}
IM_ASSERT((int)strlen(glsl_version) + 2 < IM_ARRAYSIZE(bd->GlslVersionString));
strcpy(bd->GlslVersionString, glsl_version);
strcat(bd->GlslVersionString, "\n");
// Make an arbitrary GL call (we don't actually need the result)
// IF YOU GET A CRASH HERE: it probably means the OpenGL function loader didn't do its job. Let us know!
GLint current_texture;
glGetIntegerv(GL_TEXTURE_BINDING_2D, &current_texture);
// Detect extensions we support
bd->HasClipOrigin = (bd->GlVersion >= 450);
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_EXTENSIONS
GLint num_extensions = 0;
glGetIntegerv(GL_NUM_EXTENSIONS, &num_extensions);
for (GLint i = 0; i < num_extensions; i++)
{
const char* extension = (const char*)glGetStringi(GL_EXTENSIONS, i);
if (extension != nullptr && strcmp(extension, "GL_ARB_clip_control") == 0)
bd->HasClipOrigin = true;
}
#endif
return true;
}
void ImGui_ImplOpenGL3_Shutdown()
{
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplOpenGL3_DestroyDeviceObjects();
io.BackendRendererName = nullptr;
io.BackendRendererUserData = nullptr;
IM_DELETE(bd);
}
void ImGui_ImplOpenGL3_NewFrame()
{
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplOpenGL3_Init()?");
if (!bd->ShaderHandle)
ImGui_ImplOpenGL3_CreateDeviceObjects();
}
static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height, GLuint vertex_array_object)
{
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glDisable(GL_STENCIL_TEST);
glEnable(GL_SCISSOR_TEST);
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
if (bd->GlVersion >= 310)
glDisable(GL_PRIMITIVE_RESTART);
#endif
#ifdef IMGUI_IMPL_HAS_POLYGON_MODE
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
#endif
// Support for GL 4.5 rarely used glClipControl(GL_UPPER_LEFT)
#if defined(GL_CLIP_ORIGIN)
bool clip_origin_lower_left = true;
if (bd->HasClipOrigin)
{
GLenum current_clip_origin = 0; glGetIntegerv(GL_CLIP_ORIGIN, (GLint*)&current_clip_origin);
if (current_clip_origin == GL_UPPER_LEFT)
clip_origin_lower_left = false;
}
#endif
// Setup viewport, orthographic projection matrix
// Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
GL_CALL(glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height));
float L = draw_data->DisplayPos.x;
float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
float T = draw_data->DisplayPos.y;
float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
#if defined(GL_CLIP_ORIGIN)
if (!clip_origin_lower_left) { float tmp = T; T = B; B = tmp; } // Swap top and bottom if origin is upper left
#endif
const float ortho_projection[4][4] =
{
{ 2.0f/(R-L), 0.0f, 0.0f, 0.0f },
{ 0.0f, 2.0f/(T-B), 0.0f, 0.0f },
{ 0.0f, 0.0f, -1.0f, 0.0f },
{ (R+L)/(L-R), (T+B)/(B-T), 0.0f, 1.0f },
};
glUseProgram(bd->ShaderHandle);
glUniform1i(bd->AttribLocationTex, 0);
glUniformMatrix4fv(bd->AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
if (bd->GlVersion >= 330)
glBindSampler(0, 0); // We use combined texture/sampler state. Applications using GL 3.3 may set that otherwise.
#endif
(void)vertex_array_object;
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
glBindVertexArray(vertex_array_object);
#endif
// Bind vertex/index buffers and setup attributes for ImDrawVert
GL_CALL(glBindBuffer(GL_ARRAY_BUFFER, bd->VboHandle));
GL_CALL(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bd->ElementsHandle));
GL_CALL(glEnableVertexAttribArray(bd->AttribLocationVtxPos));
GL_CALL(glEnableVertexAttribArray(bd->AttribLocationVtxUV));
GL_CALL(glEnableVertexAttribArray(bd->AttribLocationVtxColor));
GL_CALL(glVertexAttribPointer(bd->AttribLocationVtxPos, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, pos)));
GL_CALL(glVertexAttribPointer(bd->AttribLocationVtxUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, uv)));
GL_CALL(glVertexAttribPointer(bd->AttribLocationVtxColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, col)));
}
// OpenGL3 Render function.
// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly.
// This is in order to be able to run within an OpenGL engine that doesn't do so.
void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
{
// Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
if (fb_width <= 0 || fb_height <= 0)
return;
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
// Backup GL state
GLenum last_active_texture; glGetIntegerv(GL_ACTIVE_TEXTURE, (GLint*)&last_active_texture);
glActiveTexture(GL_TEXTURE0);
GLuint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, (GLint*)&last_program);
GLuint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, (GLint*)&last_texture);
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
GLuint last_sampler; if (bd->GlVersion >= 330) { glGetIntegerv(GL_SAMPLER_BINDING, (GLint*)&last_sampler); } else { last_sampler = 0; }
#endif
GLuint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, (GLint*)&last_array_buffer);
#ifndef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
// This is part of VAO on OpenGL 3.0+ and OpenGL ES 3.0+.
GLint last_element_array_buffer; glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &last_element_array_buffer);
ImGui_ImplOpenGL3_VtxAttribState last_vtx_attrib_state_pos; last_vtx_attrib_state_pos.GetState(bd->AttribLocationVtxPos);
ImGui_ImplOpenGL3_VtxAttribState last_vtx_attrib_state_uv; last_vtx_attrib_state_uv.GetState(bd->AttribLocationVtxUV);
ImGui_ImplOpenGL3_VtxAttribState last_vtx_attrib_state_color; last_vtx_attrib_state_color.GetState(bd->AttribLocationVtxColor);
#endif
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
GLuint last_vertex_array_object; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, (GLint*)&last_vertex_array_object);
#endif
#ifdef IMGUI_IMPL_HAS_POLYGON_MODE
GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
#endif
GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
GLenum last_blend_src_rgb; glGetIntegerv(GL_BLEND_SRC_RGB, (GLint*)&last_blend_src_rgb);
GLenum last_blend_dst_rgb; glGetIntegerv(GL_BLEND_DST_RGB, (GLint*)&last_blend_dst_rgb);
GLenum last_blend_src_alpha; glGetIntegerv(GL_BLEND_SRC_ALPHA, (GLint*)&last_blend_src_alpha);
GLenum last_blend_dst_alpha; glGetIntegerv(GL_BLEND_DST_ALPHA, (GLint*)&last_blend_dst_alpha);
GLenum last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, (GLint*)&last_blend_equation_rgb);
GLenum last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, (GLint*)&last_blend_equation_alpha);
GLboolean last_enable_blend = glIsEnabled(GL_BLEND);
GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
GLboolean last_enable_stencil_test = glIsEnabled(GL_STENCIL_TEST);
GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
GLboolean last_enable_primitive_restart = (bd->GlVersion >= 310) ? glIsEnabled(GL_PRIMITIVE_RESTART) : GL_FALSE;
#endif
// Setup desired GL state
// Recreate the VAO every time (this is to easily allow multiple GL contexts to be rendered to. VAO are not shared among GL contexts)
// The renderer would actually work without any VAO bound, but then our VertexAttrib calls would overwrite the default one currently bound.
GLuint vertex_array_object = 0;
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
GL_CALL(glGenVertexArrays(1, &vertex_array_object));
#endif
ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object);
// Will project scissor/clipping rectangles into framebuffer space
ImVec2 clip_off = draw_data->DisplayPos; // (0,0) unless using multi-viewports
ImVec2 clip_scale = draw_data->FramebufferScale; // (1,1) unless using retina display which are often (2,2)
// Render command lists
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* cmd_list = draw_data->CmdLists[n];
// Upload vertex/index buffers
// - OpenGL drivers are in a very sorry state nowadays....
// During 2021 we attempted to switch from glBufferData() to orphaning+glBufferSubData() following reports
// of leaks on Intel GPU when using multi-viewports on Windows.
// - After this we kept hearing of various display corruptions issues. We started disabling on non-Intel GPU, but issues still got reported on Intel.
// - We are now back to using exclusively glBufferData(). So bd->UseBufferSubData IS ALWAYS FALSE in this code.
// We are keeping the old code path for a while in case people finding new issues may want to test the bd->UseBufferSubData path.
// - See https://github.com/ocornut/imgui/issues/4468 and please report any corruption issues.
const GLsizeiptr vtx_buffer_size = (GLsizeiptr)cmd_list->VtxBuffer.Size * (int)sizeof(ImDrawVert);
const GLsizeiptr idx_buffer_size = (GLsizeiptr)cmd_list->IdxBuffer.Size * (int)sizeof(ImDrawIdx);
if (bd->UseBufferSubData)
{
if (bd->VertexBufferSize < vtx_buffer_size)
{
bd->VertexBufferSize = vtx_buffer_size;
GL_CALL(glBufferData(GL_ARRAY_BUFFER, bd->VertexBufferSize, nullptr, GL_STREAM_DRAW));
}
if (bd->IndexBufferSize < idx_buffer_size)
{
bd->IndexBufferSize = idx_buffer_size;
GL_CALL(glBufferData(GL_ELEMENT_ARRAY_BUFFER, bd->IndexBufferSize, nullptr, GL_STREAM_DRAW));
}
GL_CALL(glBufferSubData(GL_ARRAY_BUFFER, 0, vtx_buffer_size, (const GLvoid*)cmd_list->VtxBuffer.Data));
GL_CALL(glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, idx_buffer_size, (const GLvoid*)cmd_list->IdxBuffer.Data));
}
else
{
GL_CALL(glBufferData(GL_ARRAY_BUFFER, vtx_buffer_size, (const GLvoid*)cmd_list->VtxBuffer.Data, GL_STREAM_DRAW));
GL_CALL(glBufferData(GL_ELEMENT_ARRAY_BUFFER, idx_buffer_size, (const GLvoid*)cmd_list->IdxBuffer.Data, GL_STREAM_DRAW));
}
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
{
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
if (pcmd->UserCallback != nullptr)
{
// User callback, registered via ImDrawList::AddCallback()
// (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object);
else
pcmd->UserCallback(cmd_list, pcmd);
}
else
{
// Project scissor/clipping rectangles into framebuffer space
ImVec2 clip_min((pcmd->ClipRect.x - clip_off.x) * clip_scale.x, (pcmd->ClipRect.y - clip_off.y) * clip_scale.y);
ImVec2 clip_max((pcmd->ClipRect.z - clip_off.x) * clip_scale.x, (pcmd->ClipRect.w - clip_off.y) * clip_scale.y);
if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
continue;
// Apply scissor/clipping rectangle (Y is inverted in OpenGL)
GL_CALL(glScissor((int)clip_min.x, (int)((float)fb_height - clip_max.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y)));
// Bind texture, Draw
GL_CALL(glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->GetTexID()));
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
if (bd->GlVersion >= 320)
GL_CALL(glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)), (GLint)pcmd->VtxOffset));
else
#endif
GL_CALL(glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx))));
}
}
}
// Destroy the temporary VAO
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
GL_CALL(glDeleteVertexArrays(1, &vertex_array_object));
#endif
// Restore modified GL state
glUseProgram(last_program);
glBindTexture(GL_TEXTURE_2D, last_texture);
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
if (bd->GlVersion >= 330)
glBindSampler(0, last_sampler);
#endif
glActiveTexture(last_active_texture);
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
glBindVertexArray(last_vertex_array_object);
#endif
glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
#ifndef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
last_vtx_attrib_state_pos.SetState(bd->AttribLocationVtxPos);
last_vtx_attrib_state_uv.SetState(bd->AttribLocationVtxUV);
last_vtx_attrib_state_color.SetState(bd->AttribLocationVtxColor);
#endif
glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
glBlendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND);
if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
if (last_enable_stencil_test) glEnable(GL_STENCIL_TEST); else glDisable(GL_STENCIL_TEST);
if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART
if (bd->GlVersion >= 310) { if (last_enable_primitive_restart) glEnable(GL_PRIMITIVE_RESTART); else glDisable(GL_PRIMITIVE_RESTART); }
#endif
#ifdef IMGUI_IMPL_HAS_POLYGON_MODE
glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
#endif
glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
(void)bd; // Not all compilation paths use this
}
bool ImGui_ImplOpenGL3_CreateFontsTexture()
{
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
// Build texture atlas
unsigned char* pixels;
int width, height;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); // Load as RGBA 32-bit (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
// Upload texture to graphics system
// (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
GLint last_texture;
GL_CALL(glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture));
GL_CALL(glGenTextures(1, &bd->FontTexture));
GL_CALL(glBindTexture(GL_TEXTURE_2D, bd->FontTexture));
GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
#ifdef GL_UNPACK_ROW_LENGTH // Not on WebGL/ES
GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, 0));
#endif
GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels));
// Store our identifier
io.Fonts->SetTexID((ImTextureID)(intptr_t)bd->FontTexture);
// Restore state
GL_CALL(glBindTexture(GL_TEXTURE_2D, last_texture));
return true;
}
void ImGui_ImplOpenGL3_DestroyFontsTexture()
{
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
if (bd->FontTexture)
{
glDeleteTextures(1, &bd->FontTexture);
io.Fonts->SetTexID(0);
bd->FontTexture = 0;
}
}
// If you get an error please report on github. You may try different GL context version or GLSL version. See GL<>GLSL version table at the top of this file.
static bool CheckShader(GLuint handle, const char* desc)
{
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
GLint status = 0, log_length = 0;
glGetShaderiv(handle, GL_COMPILE_STATUS, &status);
glGetShaderiv(handle, GL_INFO_LOG_LENGTH, &log_length);
if ((GLboolean)status == GL_FALSE)
fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to compile %s! With GLSL: %s\n", desc, bd->GlslVersionString);
if (log_length > 1)
{
ImVector<char> buf;
buf.resize((int)(log_length + 1));
glGetShaderInfoLog(handle, log_length, nullptr, (GLchar*)buf.begin());
fprintf(stderr, "%s\n", buf.begin());
}
return (GLboolean)status == GL_TRUE;
}
// If you get an error please report on GitHub. You may try different GL context version or GLSL version.
static bool CheckProgram(GLuint handle, const char* desc)
{
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
GLint status = 0, log_length = 0;
glGetProgramiv(handle, GL_LINK_STATUS, &status);
glGetProgramiv(handle, GL_INFO_LOG_LENGTH, &log_length);
if ((GLboolean)status == GL_FALSE)
fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to link %s! With GLSL %s\n", desc, bd->GlslVersionString);
if (log_length > 1)
{
ImVector<char> buf;
buf.resize((int)(log_length + 1));
glGetProgramInfoLog(handle, log_length, nullptr, (GLchar*)buf.begin());
fprintf(stderr, "%s\n", buf.begin());
}
return (GLboolean)status == GL_TRUE;
}
bool ImGui_ImplOpenGL3_CreateDeviceObjects()
{
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
// Backup GL state
GLint last_texture, last_array_buffer;
glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
GLint last_vertex_array;
glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
#endif
// Parse GLSL version string
int glsl_version = 130;
sscanf(bd->GlslVersionString, "#version %d", &glsl_version);
const GLchar* vertex_shader_glsl_120 =
"uniform mat4 ProjMtx;\n"
"attribute vec2 Position;\n"
"attribute vec2 UV;\n"
"attribute vec4 Color;\n"
"varying vec2 Frag_UV;\n"
"varying vec4 Frag_Color;\n"
"void main()\n"
"{\n"
" Frag_UV = UV;\n"
" Frag_Color = Color;\n"
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
"}\n";
const GLchar* vertex_shader_glsl_130 =
"uniform mat4 ProjMtx;\n"
"in vec2 Position;\n"
"in vec2 UV;\n"
"in vec4 Color;\n"
"out vec2 Frag_UV;\n"
"out vec4 Frag_Color;\n"
"void main()\n"
"{\n"
" Frag_UV = UV;\n"
" Frag_Color = Color;\n"
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
"}\n";
const GLchar* vertex_shader_glsl_300_es =
"precision highp float;\n"
"layout (location = 0) in vec2 Position;\n"
"layout (location = 1) in vec2 UV;\n"
"layout (location = 2) in vec4 Color;\n"
"uniform mat4 ProjMtx;\n"
"out vec2 Frag_UV;\n"
"out vec4 Frag_Color;\n"
"void main()\n"
"{\n"
" Frag_UV = UV;\n"
" Frag_Color = Color;\n"
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
"}\n";
const GLchar* vertex_shader_glsl_410_core =
"layout (location = 0) in vec2 Position;\n"
"layout (location = 1) in vec2 UV;\n"
"layout (location = 2) in vec4 Color;\n"
"uniform mat4 ProjMtx;\n"
"out vec2 Frag_UV;\n"
"out vec4 Frag_Color;\n"
"void main()\n"
"{\n"
" Frag_UV = UV;\n"
" Frag_Color = Color;\n"
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
"}\n";
const GLchar* fragment_shader_glsl_120 =
"#ifdef GL_ES\n"
" precision mediump float;\n"
"#endif\n"
"uniform sampler2D Texture;\n"
"varying vec2 Frag_UV;\n"
"varying vec4 Frag_Color;\n"
"void main()\n"
"{\n"
" gl_FragColor = Frag_Color * texture2D(Texture, Frag_UV.st);\n"
"}\n";
const GLchar* fragment_shader_glsl_130 =
"uniform sampler2D Texture;\n"
"in vec2 Frag_UV;\n"
"in vec4 Frag_Color;\n"
"out vec4 Out_Color;\n"
"void main()\n"
"{\n"
" Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
"}\n";
const GLchar* fragment_shader_glsl_300_es =
"precision mediump float;\n"
"uniform sampler2D Texture;\n"
"in vec2 Frag_UV;\n"
"in vec4 Frag_Color;\n"
"layout (location = 0) out vec4 Out_Color;\n"
"void main()\n"
"{\n"
" Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
"}\n";
const GLchar* fragment_shader_glsl_410_core =
"in vec2 Frag_UV;\n"
"in vec4 Frag_Color;\n"
"uniform sampler2D Texture;\n"
"layout (location = 0) out vec4 Out_Color;\n"
"void main()\n"
"{\n"
" Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
"}\n";
// Select shaders matching our GLSL versions
const GLchar* vertex_shader = nullptr;
const GLchar* fragment_shader = nullptr;
if (glsl_version < 130)
{
vertex_shader = vertex_shader_glsl_120;
fragment_shader = fragment_shader_glsl_120;
}
else if (glsl_version >= 410)
{
vertex_shader = vertex_shader_glsl_410_core;
fragment_shader = fragment_shader_glsl_410_core;
}
else if (glsl_version == 300)
{
vertex_shader = vertex_shader_glsl_300_es;
fragment_shader = fragment_shader_glsl_300_es;
}
else
{
vertex_shader = vertex_shader_glsl_130;
fragment_shader = fragment_shader_glsl_130;
}
// Create shaders
const GLchar* vertex_shader_with_version[2] = { bd->GlslVersionString, vertex_shader };
GLuint vert_handle = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vert_handle, 2, vertex_shader_with_version, nullptr);
glCompileShader(vert_handle);
CheckShader(vert_handle, "vertex shader");
const GLchar* fragment_shader_with_version[2] = { bd->GlslVersionString, fragment_shader };
GLuint frag_handle = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(frag_handle, 2, fragment_shader_with_version, nullptr);
glCompileShader(frag_handle);
CheckShader(frag_handle, "fragment shader");
// Link
bd->ShaderHandle = glCreateProgram();
glAttachShader(bd->ShaderHandle, vert_handle);
glAttachShader(bd->ShaderHandle, frag_handle);
glLinkProgram(bd->ShaderHandle);
CheckProgram(bd->ShaderHandle, "shader program");
glDetachShader(bd->ShaderHandle, vert_handle);
glDetachShader(bd->ShaderHandle, frag_handle);
glDeleteShader(vert_handle);
glDeleteShader(frag_handle);
bd->AttribLocationTex = glGetUniformLocation(bd->ShaderHandle, "Texture");
bd->AttribLocationProjMtx = glGetUniformLocation(bd->ShaderHandle, "ProjMtx");
bd->AttribLocationVtxPos = (GLuint)glGetAttribLocation(bd->ShaderHandle, "Position");
bd->AttribLocationVtxUV = (GLuint)glGetAttribLocation(bd->ShaderHandle, "UV");
bd->AttribLocationVtxColor = (GLuint)glGetAttribLocation(bd->ShaderHandle, "Color");
// Create buffers
glGenBuffers(1, &bd->VboHandle);
glGenBuffers(1, &bd->ElementsHandle);
ImGui_ImplOpenGL3_CreateFontsTexture();
// Restore modified GL state
glBindTexture(GL_TEXTURE_2D, last_texture);
glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
glBindVertexArray(last_vertex_array);
#endif
return true;
}
void ImGui_ImplOpenGL3_DestroyDeviceObjects()
{
ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
if (bd->VboHandle) { glDeleteBuffers(1, &bd->VboHandle); bd->VboHandle = 0; }
if (bd->ElementsHandle) { glDeleteBuffers(1, &bd->ElementsHandle); bd->ElementsHandle = 0; }
if (bd->ShaderHandle) { glDeleteProgram(bd->ShaderHandle); bd->ShaderHandle = 0; }
ImGui_ImplOpenGL3_DestroyFontsTexture();
}
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
#if defined(__clang__)
#pragma clang diagnostic pop
#endif

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// dear imgui: Renderer Backend for modern OpenGL with shaders / programmatic pipeline
// - Desktop GL: 2.x 3.x 4.x
// - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0)
// This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..)
// Implemented features:
// [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
// [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bit indices.
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
// About GLSL version:
// The 'glsl_version' initialization parameter should be nullptr (default) or a "#version XXX" string.
// On computer platform the GLSL version default to "#version 130". On OpenGL ES 3 platform it defaults to "#version 300 es"
// Only override if your GL version doesn't handle this GLSL version. See GLSL version table at the top of imgui_impl_opengl3.cpp.
#pragma once
#include "imgui.h" // IMGUI_IMPL_API
// Backend API
IMGUI_IMPL_API bool ImGui_ImplOpenGL3_Init(const char* glsl_version = nullptr);
IMGUI_IMPL_API void ImGui_ImplOpenGL3_Shutdown();
IMGUI_IMPL_API void ImGui_ImplOpenGL3_NewFrame();
IMGUI_IMPL_API void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data);
// (Optional) Called by Init/NewFrame/Shutdown
IMGUI_IMPL_API bool ImGui_ImplOpenGL3_CreateFontsTexture();
IMGUI_IMPL_API void ImGui_ImplOpenGL3_DestroyFontsTexture();
IMGUI_IMPL_API bool ImGui_ImplOpenGL3_CreateDeviceObjects();
IMGUI_IMPL_API void ImGui_ImplOpenGL3_DestroyDeviceObjects();
// Specific OpenGL ES versions
//#define IMGUI_IMPL_OPENGL_ES2 // Auto-detected on Emscripten
//#define IMGUI_IMPL_OPENGL_ES3 // Auto-detected on iOS/Android
// You can explicitly select GLES2 or GLES3 API by using one of the '#define IMGUI_IMPL_OPENGL_LOADER_XXX' in imconfig.h or compiler command-line.
#if !defined(IMGUI_IMPL_OPENGL_ES2) \
&& !defined(IMGUI_IMPL_OPENGL_ES3)
// Try to detect GLES on matching platforms
#if defined(__APPLE__)
#include <TargetConditionals.h>
#endif
#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV)) || (defined(__ANDROID__))
#define IMGUI_IMPL_OPENGL_ES3 // iOS, Android -> GL ES 3, "#version 300 es"
#elif defined(__EMSCRIPTEN__) || defined(__amigaos4__)
#define IMGUI_IMPL_OPENGL_ES2 // Emscripten -> GL ES 2, "#version 100"
#else
// Otherwise imgui_impl_opengl3_loader.h will be used.
#endif
#endif

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//-----------------------------------------------------------------------------
// About imgui_impl_opengl3_loader.h:
//
// We embed our own OpenGL loader to not require user to provide their own or to have to use ours,
// which proved to be endless problems for users.
// Our loader is custom-generated, based on gl3w but automatically filtered to only include
// enums/functions that we use in our imgui_impl_opengl3.cpp source file in order to be small.
//
// YOU SHOULD NOT NEED TO INCLUDE/USE THIS DIRECTLY. THIS IS USED BY imgui_impl_opengl3.cpp ONLY.
// THE REST OF YOUR APP SHOULD USE A DIFFERENT GL LOADER: ANY GL LOADER OF YOUR CHOICE.
//
// IF YOU GET BUILD ERRORS IN THIS FILE (commonly macro redefinitions or function redefinitions):
// IT LIKELY MEANS THAT YOU ARE BUILDING 'imgui_impl_opengl3.cpp' OR INCUDING 'imgui_impl_opengl3_loader.h'
// IN THE SAME COMPILATION UNIT AS ONE OF YOUR FILE WHICH IS USING A THIRD-PARTY OPENGL LOADER.
// (e.g. COULD HAPPEN IF YOU ARE DOING A UNITY/JUMBO BUILD, OR INCLUDING .CPP FILES FROM OTHERS)
// YOU SHOULD NOT BUILD BOTH IN THE SAME COMPILATION UNIT.
// BUT IF YOU REALLY WANT TO, you can '#define IMGUI_IMPL_OPENGL_LOADER_CUSTOM' and imgui_impl_opengl3.cpp
// WILL NOT BE USING OUR LOADER, AND INSTEAD EXPECT ANOTHER/YOUR LOADER TO BE AVAILABLE IN THE COMPILATION UNIT.
//
// Regenerate with:
// python gl3w_gen.py --output ../imgui/backends/imgui_impl_opengl3_loader.h --ref ../imgui/backends/imgui_impl_opengl3.cpp ./extra_symbols.txt
//
// More info:
// https://github.com/dearimgui/gl3w_stripped
// https://github.com/ocornut/imgui/issues/4445
//-----------------------------------------------------------------------------
/*
* This file was generated with gl3w_gen.py, part of imgl3w
* (hosted at https://github.com/dearimgui/gl3w_stripped)
*
* This is free and unencumbered software released into the public domain.
*
* Anyone is free to copy, modify, publish, use, compile, sell, or
* distribute this software, either in source code form or as a compiled
* binary, for any purpose, commercial or non-commercial, and by any
* means.
*
* In jurisdictions that recognize copyright laws, the author or authors
* of this software dedicate any and all copyright interest in the
* software to the public domain. We make this dedication for the benefit
* of the public at large and to the detriment of our heirs and
* successors. We intend this dedication to be an overt act of
* relinquishment in perpetuity of all present and future rights to this
* software under copyright law.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __gl3w_h_
#define __gl3w_h_
// Adapted from KHR/khrplatform.h to avoid including entire file.
#ifndef __khrplatform_h_
typedef float khronos_float_t;
typedef signed char khronos_int8_t;
typedef unsigned char khronos_uint8_t;
typedef signed short int khronos_int16_t;
typedef unsigned short int khronos_uint16_t;
#ifdef _WIN64
typedef signed long long int khronos_intptr_t;
typedef signed long long int khronos_ssize_t;
#else
typedef signed long int khronos_intptr_t;
typedef signed long int khronos_ssize_t;
#endif
#if defined(_MSC_VER) && !defined(__clang__)
typedef signed __int64 khronos_int64_t;
typedef unsigned __int64 khronos_uint64_t;
#elif (defined(__clang__) || defined(__GNUC__)) && (__cplusplus < 201100)
#include <stdint.h>
typedef int64_t khronos_int64_t;
typedef uint64_t khronos_uint64_t;
#else
typedef signed long long khronos_int64_t;
typedef unsigned long long khronos_uint64_t;
#endif
#endif // __khrplatform_h_
#ifndef __gl_glcorearb_h_
#define __gl_glcorearb_h_ 1
#ifdef __cplusplus
extern "C" {
#endif
/*
** Copyright 2013-2020 The Khronos Group Inc.
** SPDX-License-Identifier: MIT
**
** This header is generated from the Khronos OpenGL / OpenGL ES XML
** API Registry. The current version of the Registry, generator scripts
** used to make the header, and the header can be found at
** https://github.com/KhronosGroup/OpenGL-Registry
*/
#if defined(_WIN32) && !defined(APIENTRY) && !defined(__CYGWIN__) && !defined(__SCITECH_SNAP__)
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif
#include <windows.h>
#endif
#ifndef APIENTRY
#define APIENTRY
#endif
#ifndef APIENTRYP
#define APIENTRYP APIENTRY *
#endif
#ifndef GLAPI
#define GLAPI extern
#endif
/* glcorearb.h is for use with OpenGL core profile implementations.
** It should should be placed in the same directory as gl.h and
** included as <GL/glcorearb.h>.
**
** glcorearb.h includes only APIs in the latest OpenGL core profile
** implementation together with APIs in newer ARB extensions which
** can be supported by the core profile. It does not, and never will
** include functionality removed from the core profile, such as
** fixed-function vertex and fragment processing.
**
** Do not #include both <GL/glcorearb.h> and either of <GL/gl.h> or
** <GL/glext.h> in the same source file.
*/
/* Generated C header for:
* API: gl
* Profile: core
* Versions considered: .*
* Versions emitted: .*
* Default extensions included: glcore
* Additional extensions included: _nomatch_^
* Extensions removed: _nomatch_^
*/
#ifndef GL_VERSION_1_0
typedef void GLvoid;
typedef unsigned int GLenum;
typedef khronos_float_t GLfloat;
typedef int GLint;
typedef int GLsizei;
typedef unsigned int GLbitfield;
typedef double GLdouble;
typedef unsigned int GLuint;
typedef unsigned char GLboolean;
typedef khronos_uint8_t GLubyte;
#define GL_COLOR_BUFFER_BIT 0x00004000
#define GL_FALSE 0
#define GL_TRUE 1
#define GL_TRIANGLES 0x0004
#define GL_ONE 1
#define GL_SRC_ALPHA 0x0302
#define GL_ONE_MINUS_SRC_ALPHA 0x0303
#define GL_FRONT_AND_BACK 0x0408
#define GL_POLYGON_MODE 0x0B40
#define GL_CULL_FACE 0x0B44
#define GL_DEPTH_TEST 0x0B71
#define GL_STENCIL_TEST 0x0B90
#define GL_VIEWPORT 0x0BA2
#define GL_BLEND 0x0BE2
#define GL_SCISSOR_BOX 0x0C10
#define GL_SCISSOR_TEST 0x0C11
#define GL_UNPACK_ROW_LENGTH 0x0CF2
#define GL_PACK_ALIGNMENT 0x0D05
#define GL_TEXTURE_2D 0x0DE1
#define GL_UNSIGNED_BYTE 0x1401
#define GL_UNSIGNED_SHORT 0x1403
#define GL_UNSIGNED_INT 0x1405
#define GL_FLOAT 0x1406
#define GL_RGBA 0x1908
#define GL_FILL 0x1B02
#define GL_VENDOR 0x1F00
#define GL_RENDERER 0x1F01
#define GL_VERSION 0x1F02
#define GL_EXTENSIONS 0x1F03
#define GL_LINEAR 0x2601
#define GL_TEXTURE_MAG_FILTER 0x2800
#define GL_TEXTURE_MIN_FILTER 0x2801
typedef void (APIENTRYP PFNGLPOLYGONMODEPROC) (GLenum face, GLenum mode);
typedef void (APIENTRYP PFNGLSCISSORPROC) (GLint x, GLint y, GLsizei width, GLsizei height);
typedef void (APIENTRYP PFNGLTEXPARAMETERIPROC) (GLenum target, GLenum pname, GLint param);
typedef void (APIENTRYP PFNGLTEXIMAGE2DPROC) (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void *pixels);
typedef void (APIENTRYP PFNGLCLEARPROC) (GLbitfield mask);
typedef void (APIENTRYP PFNGLCLEARCOLORPROC) (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
typedef void (APIENTRYP PFNGLDISABLEPROC) (GLenum cap);
typedef void (APIENTRYP PFNGLENABLEPROC) (GLenum cap);
typedef void (APIENTRYP PFNGLFLUSHPROC) (void);
typedef void (APIENTRYP PFNGLPIXELSTOREIPROC) (GLenum pname, GLint param);
typedef void (APIENTRYP PFNGLREADPIXELSPROC) (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void *pixels);
typedef GLenum (APIENTRYP PFNGLGETERRORPROC) (void);
typedef void (APIENTRYP PFNGLGETINTEGERVPROC) (GLenum pname, GLint *data);
typedef const GLubyte *(APIENTRYP PFNGLGETSTRINGPROC) (GLenum name);
typedef GLboolean (APIENTRYP PFNGLISENABLEDPROC) (GLenum cap);
typedef void (APIENTRYP PFNGLVIEWPORTPROC) (GLint x, GLint y, GLsizei width, GLsizei height);
#ifdef GL_GLEXT_PROTOTYPES
GLAPI void APIENTRY glPolygonMode (GLenum face, GLenum mode);
GLAPI void APIENTRY glScissor (GLint x, GLint y, GLsizei width, GLsizei height);
GLAPI void APIENTRY glTexParameteri (GLenum target, GLenum pname, GLint param);
GLAPI void APIENTRY glTexImage2D (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void *pixels);
GLAPI void APIENTRY glClear (GLbitfield mask);
GLAPI void APIENTRY glClearColor (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
GLAPI void APIENTRY glDisable (GLenum cap);
GLAPI void APIENTRY glEnable (GLenum cap);
GLAPI void APIENTRY glFlush (void);
GLAPI void APIENTRY glPixelStorei (GLenum pname, GLint param);
GLAPI void APIENTRY glReadPixels (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void *pixels);
GLAPI GLenum APIENTRY glGetError (void);
GLAPI void APIENTRY glGetIntegerv (GLenum pname, GLint *data);
GLAPI const GLubyte *APIENTRY glGetString (GLenum name);
GLAPI GLboolean APIENTRY glIsEnabled (GLenum cap);
GLAPI void APIENTRY glViewport (GLint x, GLint y, GLsizei width, GLsizei height);
#endif
#endif /* GL_VERSION_1_0 */
#ifndef GL_VERSION_1_1
typedef khronos_float_t GLclampf;
typedef double GLclampd;
#define GL_TEXTURE_BINDING_2D 0x8069
typedef void (APIENTRYP PFNGLDRAWELEMENTSPROC) (GLenum mode, GLsizei count, GLenum type, const void *indices);
typedef void (APIENTRYP PFNGLBINDTEXTUREPROC) (GLenum target, GLuint texture);
typedef void (APIENTRYP PFNGLDELETETEXTURESPROC) (GLsizei n, const GLuint *textures);
typedef void (APIENTRYP PFNGLGENTEXTURESPROC) (GLsizei n, GLuint *textures);
#ifdef GL_GLEXT_PROTOTYPES
GLAPI void APIENTRY glDrawElements (GLenum mode, GLsizei count, GLenum type, const void *indices);
GLAPI void APIENTRY glBindTexture (GLenum target, GLuint texture);
GLAPI void APIENTRY glDeleteTextures (GLsizei n, const GLuint *textures);
GLAPI void APIENTRY glGenTextures (GLsizei n, GLuint *textures);
#endif
#endif /* GL_VERSION_1_1 */
#ifndef GL_VERSION_1_3
#define GL_TEXTURE0 0x84C0
#define GL_ACTIVE_TEXTURE 0x84E0
typedef void (APIENTRYP PFNGLACTIVETEXTUREPROC) (GLenum texture);
#ifdef GL_GLEXT_PROTOTYPES
GLAPI void APIENTRY glActiveTexture (GLenum texture);
#endif
#endif /* GL_VERSION_1_3 */
#ifndef GL_VERSION_1_4
#define GL_BLEND_DST_RGB 0x80C8
#define GL_BLEND_SRC_RGB 0x80C9
#define GL_BLEND_DST_ALPHA 0x80CA
#define GL_BLEND_SRC_ALPHA 0x80CB
#define GL_FUNC_ADD 0x8006
typedef void (APIENTRYP PFNGLBLENDFUNCSEPARATEPROC) (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
typedef void (APIENTRYP PFNGLBLENDEQUATIONPROC) (GLenum mode);
#ifdef GL_GLEXT_PROTOTYPES
GLAPI void APIENTRY glBlendFuncSeparate (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha);
GLAPI void APIENTRY glBlendEquation (GLenum mode);
#endif
#endif /* GL_VERSION_1_4 */
#ifndef GL_VERSION_1_5
typedef khronos_ssize_t GLsizeiptr;
typedef khronos_intptr_t GLintptr;
#define GL_ARRAY_BUFFER 0x8892
#define GL_ELEMENT_ARRAY_BUFFER 0x8893
#define GL_ARRAY_BUFFER_BINDING 0x8894
#define GL_ELEMENT_ARRAY_BUFFER_BINDING 0x8895
#define GL_STREAM_DRAW 0x88E0
typedef void (APIENTRYP PFNGLBINDBUFFERPROC) (GLenum target, GLuint buffer);
typedef void (APIENTRYP PFNGLDELETEBUFFERSPROC) (GLsizei n, const GLuint *buffers);
typedef void (APIENTRYP PFNGLGENBUFFERSPROC) (GLsizei n, GLuint *buffers);
typedef void (APIENTRYP PFNGLBUFFERDATAPROC) (GLenum target, GLsizeiptr size, const void *data, GLenum usage);
typedef void (APIENTRYP PFNGLBUFFERSUBDATAPROC) (GLenum target, GLintptr offset, GLsizeiptr size, const void *data);
#ifdef GL_GLEXT_PROTOTYPES
GLAPI void APIENTRY glBindBuffer (GLenum target, GLuint buffer);
GLAPI void APIENTRY glDeleteBuffers (GLsizei n, const GLuint *buffers);
GLAPI void APIENTRY glGenBuffers (GLsizei n, GLuint *buffers);
GLAPI void APIENTRY glBufferData (GLenum target, GLsizeiptr size, const void *data, GLenum usage);
GLAPI void APIENTRY glBufferSubData (GLenum target, GLintptr offset, GLsizeiptr size, const void *data);
#endif
#endif /* GL_VERSION_1_5 */
#ifndef GL_VERSION_2_0
typedef char GLchar;
typedef khronos_int16_t GLshort;
typedef khronos_int8_t GLbyte;
typedef khronos_uint16_t GLushort;
#define GL_BLEND_EQUATION_RGB 0x8009
#define GL_VERTEX_ATTRIB_ARRAY_ENABLED 0x8622
#define GL_VERTEX_ATTRIB_ARRAY_SIZE 0x8623
#define GL_VERTEX_ATTRIB_ARRAY_STRIDE 0x8624
#define GL_VERTEX_ATTRIB_ARRAY_TYPE 0x8625
#define GL_VERTEX_ATTRIB_ARRAY_POINTER 0x8645
#define GL_BLEND_EQUATION_ALPHA 0x883D
#define GL_VERTEX_ATTRIB_ARRAY_NORMALIZED 0x886A
#define GL_FRAGMENT_SHADER 0x8B30
#define GL_VERTEX_SHADER 0x8B31
#define GL_COMPILE_STATUS 0x8B81
#define GL_LINK_STATUS 0x8B82
#define GL_INFO_LOG_LENGTH 0x8B84
#define GL_CURRENT_PROGRAM 0x8B8D
#define GL_UPPER_LEFT 0x8CA2
typedef void (APIENTRYP PFNGLBLENDEQUATIONSEPARATEPROC) (GLenum modeRGB, GLenum modeAlpha);
typedef void (APIENTRYP PFNGLATTACHSHADERPROC) (GLuint program, GLuint shader);
typedef void (APIENTRYP PFNGLCOMPILESHADERPROC) (GLuint shader);
typedef GLuint (APIENTRYP PFNGLCREATEPROGRAMPROC) (void);
typedef GLuint (APIENTRYP PFNGLCREATESHADERPROC) (GLenum type);
typedef void (APIENTRYP PFNGLDELETEPROGRAMPROC) (GLuint program);
typedef void (APIENTRYP PFNGLDELETESHADERPROC) (GLuint shader);
typedef void (APIENTRYP PFNGLDETACHSHADERPROC) (GLuint program, GLuint shader);
typedef void (APIENTRYP PFNGLDISABLEVERTEXATTRIBARRAYPROC) (GLuint index);
typedef void (APIENTRYP PFNGLENABLEVERTEXATTRIBARRAYPROC) (GLuint index);
typedef GLint (APIENTRYP PFNGLGETATTRIBLOCATIONPROC) (GLuint program, const GLchar *name);
typedef void (APIENTRYP PFNGLGETPROGRAMIVPROC) (GLuint program, GLenum pname, GLint *params);
typedef void (APIENTRYP PFNGLGETPROGRAMINFOLOGPROC) (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
typedef void (APIENTRYP PFNGLGETSHADERIVPROC) (GLuint shader, GLenum pname, GLint *params);
typedef void (APIENTRYP PFNGLGETSHADERINFOLOGPROC) (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
typedef GLint (APIENTRYP PFNGLGETUNIFORMLOCATIONPROC) (GLuint program, const GLchar *name);
typedef void (APIENTRYP PFNGLGETVERTEXATTRIBIVPROC) (GLuint index, GLenum pname, GLint *params);
typedef void (APIENTRYP PFNGLGETVERTEXATTRIBPOINTERVPROC) (GLuint index, GLenum pname, void **pointer);
typedef void (APIENTRYP PFNGLLINKPROGRAMPROC) (GLuint program);
typedef void (APIENTRYP PFNGLSHADERSOURCEPROC) (GLuint shader, GLsizei count, const GLchar *const*string, const GLint *length);
typedef void (APIENTRYP PFNGLUSEPROGRAMPROC) (GLuint program);
typedef void (APIENTRYP PFNGLUNIFORM1IPROC) (GLint location, GLint v0);
typedef void (APIENTRYP PFNGLUNIFORMMATRIX4FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (APIENTRYP PFNGLVERTEXATTRIBPOINTERPROC) (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer);
#ifdef GL_GLEXT_PROTOTYPES
GLAPI void APIENTRY glBlendEquationSeparate (GLenum modeRGB, GLenum modeAlpha);
GLAPI void APIENTRY glAttachShader (GLuint program, GLuint shader);
GLAPI void APIENTRY glCompileShader (GLuint shader);
GLAPI GLuint APIENTRY glCreateProgram (void);
GLAPI GLuint APIENTRY glCreateShader (GLenum type);
GLAPI void APIENTRY glDeleteProgram (GLuint program);
GLAPI void APIENTRY glDeleteShader (GLuint shader);
GLAPI void APIENTRY glDetachShader (GLuint program, GLuint shader);
GLAPI void APIENTRY glDisableVertexAttribArray (GLuint index);
GLAPI void APIENTRY glEnableVertexAttribArray (GLuint index);
GLAPI GLint APIENTRY glGetAttribLocation (GLuint program, const GLchar *name);
GLAPI void APIENTRY glGetProgramiv (GLuint program, GLenum pname, GLint *params);
GLAPI void APIENTRY glGetProgramInfoLog (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
GLAPI void APIENTRY glGetShaderiv (GLuint shader, GLenum pname, GLint *params);
GLAPI void APIENTRY glGetShaderInfoLog (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
GLAPI GLint APIENTRY glGetUniformLocation (GLuint program, const GLchar *name);
GLAPI void APIENTRY glGetVertexAttribiv (GLuint index, GLenum pname, GLint *params);
GLAPI void APIENTRY glGetVertexAttribPointerv (GLuint index, GLenum pname, void **pointer);
GLAPI void APIENTRY glLinkProgram (GLuint program);
GLAPI void APIENTRY glShaderSource (GLuint shader, GLsizei count, const GLchar *const*string, const GLint *length);
GLAPI void APIENTRY glUseProgram (GLuint program);
GLAPI void APIENTRY glUniform1i (GLint location, GLint v0);
GLAPI void APIENTRY glUniformMatrix4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
GLAPI void APIENTRY glVertexAttribPointer (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer);
#endif
#endif /* GL_VERSION_2_0 */
#ifndef GL_VERSION_3_0
typedef khronos_uint16_t GLhalf;
#define GL_MAJOR_VERSION 0x821B
#define GL_MINOR_VERSION 0x821C
#define GL_NUM_EXTENSIONS 0x821D
#define GL_FRAMEBUFFER_SRGB 0x8DB9
#define GL_VERTEX_ARRAY_BINDING 0x85B5
typedef void (APIENTRYP PFNGLGETBOOLEANI_VPROC) (GLenum target, GLuint index, GLboolean *data);
typedef void (APIENTRYP PFNGLGETINTEGERI_VPROC) (GLenum target, GLuint index, GLint *data);
typedef const GLubyte *(APIENTRYP PFNGLGETSTRINGIPROC) (GLenum name, GLuint index);
typedef void (APIENTRYP PFNGLBINDVERTEXARRAYPROC) (GLuint array);
typedef void (APIENTRYP PFNGLDELETEVERTEXARRAYSPROC) (GLsizei n, const GLuint *arrays);
typedef void (APIENTRYP PFNGLGENVERTEXARRAYSPROC) (GLsizei n, GLuint *arrays);
#ifdef GL_GLEXT_PROTOTYPES
GLAPI const GLubyte *APIENTRY glGetStringi (GLenum name, GLuint index);
GLAPI void APIENTRY glBindVertexArray (GLuint array);
GLAPI void APIENTRY glDeleteVertexArrays (GLsizei n, const GLuint *arrays);
GLAPI void APIENTRY glGenVertexArrays (GLsizei n, GLuint *arrays);
#endif
#endif /* GL_VERSION_3_0 */
#ifndef GL_VERSION_3_1
#define GL_VERSION_3_1 1
#define GL_PRIMITIVE_RESTART 0x8F9D
#endif /* GL_VERSION_3_1 */
#ifndef GL_VERSION_3_2
#define GL_VERSION_3_2 1
typedef struct __GLsync *GLsync;
typedef khronos_uint64_t GLuint64;
typedef khronos_int64_t GLint64;
typedef void (APIENTRYP PFNGLDRAWELEMENTSBASEVERTEXPROC) (GLenum mode, GLsizei count, GLenum type, const void *indices, GLint basevertex);
typedef void (APIENTRYP PFNGLGETINTEGER64I_VPROC) (GLenum target, GLuint index, GLint64 *data);
#ifdef GL_GLEXT_PROTOTYPES
GLAPI void APIENTRY glDrawElementsBaseVertex (GLenum mode, GLsizei count, GLenum type, const void *indices, GLint basevertex);
#endif
#endif /* GL_VERSION_3_2 */
#ifndef GL_VERSION_3_3
#define GL_VERSION_3_3 1
#define GL_SAMPLER_BINDING 0x8919
typedef void (APIENTRYP PFNGLBINDSAMPLERPROC) (GLuint unit, GLuint sampler);
#ifdef GL_GLEXT_PROTOTYPES
GLAPI void APIENTRY glBindSampler (GLuint unit, GLuint sampler);
#endif
#endif /* GL_VERSION_3_3 */
#ifndef GL_VERSION_4_1
typedef void (APIENTRYP PFNGLGETFLOATI_VPROC) (GLenum target, GLuint index, GLfloat *data);
typedef void (APIENTRYP PFNGLGETDOUBLEI_VPROC) (GLenum target, GLuint index, GLdouble *data);
#endif /* GL_VERSION_4_1 */
#ifndef GL_VERSION_4_3
typedef void (APIENTRY *GLDEBUGPROC)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam);
#endif /* GL_VERSION_4_3 */
#ifndef GL_VERSION_4_5
#define GL_CLIP_ORIGIN 0x935C
typedef void (APIENTRYP PFNGLGETTRANSFORMFEEDBACKI_VPROC) (GLuint xfb, GLenum pname, GLuint index, GLint *param);
typedef void (APIENTRYP PFNGLGETTRANSFORMFEEDBACKI64_VPROC) (GLuint xfb, GLenum pname, GLuint index, GLint64 *param);
#endif /* GL_VERSION_4_5 */
#ifndef GL_ARB_bindless_texture
typedef khronos_uint64_t GLuint64EXT;
#endif /* GL_ARB_bindless_texture */
#ifndef GL_ARB_cl_event
struct _cl_context;
struct _cl_event;
#endif /* GL_ARB_cl_event */
#ifndef GL_ARB_clip_control
#define GL_ARB_clip_control 1
#endif /* GL_ARB_clip_control */
#ifndef GL_ARB_debug_output
typedef void (APIENTRY *GLDEBUGPROCARB)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam);
#endif /* GL_ARB_debug_output */
#ifndef GL_EXT_EGL_image_storage
typedef void *GLeglImageOES;
#endif /* GL_EXT_EGL_image_storage */
#ifndef GL_EXT_direct_state_access
typedef void (APIENTRYP PFNGLGETFLOATI_VEXTPROC) (GLenum pname, GLuint index, GLfloat *params);
typedef void (APIENTRYP PFNGLGETDOUBLEI_VEXTPROC) (GLenum pname, GLuint index, GLdouble *params);
typedef void (APIENTRYP PFNGLGETPOINTERI_VEXTPROC) (GLenum pname, GLuint index, void **params);
typedef void (APIENTRYP PFNGLGETVERTEXARRAYINTEGERI_VEXTPROC) (GLuint vaobj, GLuint index, GLenum pname, GLint *param);
typedef void (APIENTRYP PFNGLGETVERTEXARRAYPOINTERI_VEXTPROC) (GLuint vaobj, GLuint index, GLenum pname, void **param);
#endif /* GL_EXT_direct_state_access */
#ifndef GL_NV_draw_vulkan_image
typedef void (APIENTRY *GLVULKANPROCNV)(void);
#endif /* GL_NV_draw_vulkan_image */
#ifndef GL_NV_gpu_shader5
typedef khronos_int64_t GLint64EXT;
#endif /* GL_NV_gpu_shader5 */
#ifndef GL_NV_vertex_buffer_unified_memory
typedef void (APIENTRYP PFNGLGETINTEGERUI64I_VNVPROC) (GLenum value, GLuint index, GLuint64EXT *result);
#endif /* GL_NV_vertex_buffer_unified_memory */
#ifdef __cplusplus
}
#endif
#endif
#ifndef GL3W_API
#define GL3W_API
#endif
#ifndef __gl_h_
#define __gl_h_
#endif
#ifdef __cplusplus
extern "C" {
#endif
#define GL3W_OK 0
#define GL3W_ERROR_INIT -1
#define GL3W_ERROR_LIBRARY_OPEN -2
#define GL3W_ERROR_OPENGL_VERSION -3
typedef void (*GL3WglProc)(void);
typedef GL3WglProc (*GL3WGetProcAddressProc)(const char *proc);
/* gl3w api */
GL3W_API int imgl3wInit(void);
GL3W_API int imgl3wInit2(GL3WGetProcAddressProc proc);
GL3W_API int imgl3wIsSupported(int major, int minor);
GL3W_API GL3WglProc imgl3wGetProcAddress(const char *proc);
/* gl3w internal state */
union GL3WProcs {
GL3WglProc ptr[58];
struct {
PFNGLACTIVETEXTUREPROC ActiveTexture;
PFNGLATTACHSHADERPROC AttachShader;
PFNGLBINDBUFFERPROC BindBuffer;
PFNGLBINDSAMPLERPROC BindSampler;
PFNGLBINDTEXTUREPROC BindTexture;
PFNGLBINDVERTEXARRAYPROC BindVertexArray;
PFNGLBLENDEQUATIONPROC BlendEquation;
PFNGLBLENDEQUATIONSEPARATEPROC BlendEquationSeparate;
PFNGLBLENDFUNCSEPARATEPROC BlendFuncSeparate;
PFNGLBUFFERDATAPROC BufferData;
PFNGLBUFFERSUBDATAPROC BufferSubData;
PFNGLCLEARPROC Clear;
PFNGLCLEARCOLORPROC ClearColor;
PFNGLCOMPILESHADERPROC CompileShader;
PFNGLCREATEPROGRAMPROC CreateProgram;
PFNGLCREATESHADERPROC CreateShader;
PFNGLDELETEBUFFERSPROC DeleteBuffers;
PFNGLDELETEPROGRAMPROC DeleteProgram;
PFNGLDELETESHADERPROC DeleteShader;
PFNGLDELETETEXTURESPROC DeleteTextures;
PFNGLDELETEVERTEXARRAYSPROC DeleteVertexArrays;
PFNGLDETACHSHADERPROC DetachShader;
PFNGLDISABLEPROC Disable;
PFNGLDISABLEVERTEXATTRIBARRAYPROC DisableVertexAttribArray;
PFNGLDRAWELEMENTSPROC DrawElements;
PFNGLDRAWELEMENTSBASEVERTEXPROC DrawElementsBaseVertex;
PFNGLENABLEPROC Enable;
PFNGLENABLEVERTEXATTRIBARRAYPROC EnableVertexAttribArray;
PFNGLFLUSHPROC Flush;
PFNGLGENBUFFERSPROC GenBuffers;
PFNGLGENTEXTURESPROC GenTextures;
PFNGLGENVERTEXARRAYSPROC GenVertexArrays;
PFNGLGETATTRIBLOCATIONPROC GetAttribLocation;
PFNGLGETERRORPROC GetError;
PFNGLGETINTEGERVPROC GetIntegerv;
PFNGLGETPROGRAMINFOLOGPROC GetProgramInfoLog;
PFNGLGETPROGRAMIVPROC GetProgramiv;
PFNGLGETSHADERINFOLOGPROC GetShaderInfoLog;
PFNGLGETSHADERIVPROC GetShaderiv;
PFNGLGETSTRINGPROC GetString;
PFNGLGETSTRINGIPROC GetStringi;
PFNGLGETUNIFORMLOCATIONPROC GetUniformLocation;
PFNGLGETVERTEXATTRIBPOINTERVPROC GetVertexAttribPointerv;
PFNGLGETVERTEXATTRIBIVPROC GetVertexAttribiv;
PFNGLISENABLEDPROC IsEnabled;
PFNGLLINKPROGRAMPROC LinkProgram;
PFNGLPIXELSTOREIPROC PixelStorei;
PFNGLPOLYGONMODEPROC PolygonMode;
PFNGLREADPIXELSPROC ReadPixels;
PFNGLSCISSORPROC Scissor;
PFNGLSHADERSOURCEPROC ShaderSource;
PFNGLTEXIMAGE2DPROC TexImage2D;
PFNGLTEXPARAMETERIPROC TexParameteri;
PFNGLUNIFORM1IPROC Uniform1i;
PFNGLUNIFORMMATRIX4FVPROC UniformMatrix4fv;
PFNGLUSEPROGRAMPROC UseProgram;
PFNGLVERTEXATTRIBPOINTERPROC VertexAttribPointer;
PFNGLVIEWPORTPROC Viewport;
} gl;
};
GL3W_API extern union GL3WProcs imgl3wProcs;
/* OpenGL functions */
#define glActiveTexture imgl3wProcs.gl.ActiveTexture
#define glAttachShader imgl3wProcs.gl.AttachShader
#define glBindBuffer imgl3wProcs.gl.BindBuffer
#define glBindSampler imgl3wProcs.gl.BindSampler
#define glBindTexture imgl3wProcs.gl.BindTexture
#define glBindVertexArray imgl3wProcs.gl.BindVertexArray
#define glBlendEquation imgl3wProcs.gl.BlendEquation
#define glBlendEquationSeparate imgl3wProcs.gl.BlendEquationSeparate
#define glBlendFuncSeparate imgl3wProcs.gl.BlendFuncSeparate
#define glBufferData imgl3wProcs.gl.BufferData
#define glBufferSubData imgl3wProcs.gl.BufferSubData
#define glClear imgl3wProcs.gl.Clear
#define glClearColor imgl3wProcs.gl.ClearColor
#define glCompileShader imgl3wProcs.gl.CompileShader
#define glCreateProgram imgl3wProcs.gl.CreateProgram
#define glCreateShader imgl3wProcs.gl.CreateShader
#define glDeleteBuffers imgl3wProcs.gl.DeleteBuffers
#define glDeleteProgram imgl3wProcs.gl.DeleteProgram
#define glDeleteShader imgl3wProcs.gl.DeleteShader
#define glDeleteTextures imgl3wProcs.gl.DeleteTextures
#define glDeleteVertexArrays imgl3wProcs.gl.DeleteVertexArrays
#define glDetachShader imgl3wProcs.gl.DetachShader
#define glDisable imgl3wProcs.gl.Disable
#define glDisableVertexAttribArray imgl3wProcs.gl.DisableVertexAttribArray
#define glDrawElements imgl3wProcs.gl.DrawElements
#define glDrawElementsBaseVertex imgl3wProcs.gl.DrawElementsBaseVertex
#define glEnable imgl3wProcs.gl.Enable
#define glEnableVertexAttribArray imgl3wProcs.gl.EnableVertexAttribArray
#define glFlush imgl3wProcs.gl.Flush
#define glGenBuffers imgl3wProcs.gl.GenBuffers
#define glGenTextures imgl3wProcs.gl.GenTextures
#define glGenVertexArrays imgl3wProcs.gl.GenVertexArrays
#define glGetAttribLocation imgl3wProcs.gl.GetAttribLocation
#define glGetError imgl3wProcs.gl.GetError
#define glGetIntegerv imgl3wProcs.gl.GetIntegerv
#define glGetProgramInfoLog imgl3wProcs.gl.GetProgramInfoLog
#define glGetProgramiv imgl3wProcs.gl.GetProgramiv
#define glGetShaderInfoLog imgl3wProcs.gl.GetShaderInfoLog
#define glGetShaderiv imgl3wProcs.gl.GetShaderiv
#define glGetString imgl3wProcs.gl.GetString
#define glGetStringi imgl3wProcs.gl.GetStringi
#define glGetUniformLocation imgl3wProcs.gl.GetUniformLocation
#define glGetVertexAttribPointerv imgl3wProcs.gl.GetVertexAttribPointerv
#define glGetVertexAttribiv imgl3wProcs.gl.GetVertexAttribiv
#define glIsEnabled imgl3wProcs.gl.IsEnabled
#define glLinkProgram imgl3wProcs.gl.LinkProgram
#define glPixelStorei imgl3wProcs.gl.PixelStorei
#define glPolygonMode imgl3wProcs.gl.PolygonMode
#define glReadPixels imgl3wProcs.gl.ReadPixels
#define glScissor imgl3wProcs.gl.Scissor
#define glShaderSource imgl3wProcs.gl.ShaderSource
#define glTexImage2D imgl3wProcs.gl.TexImage2D
#define glTexParameteri imgl3wProcs.gl.TexParameteri
#define glUniform1i imgl3wProcs.gl.Uniform1i
#define glUniformMatrix4fv imgl3wProcs.gl.UniformMatrix4fv
#define glUseProgram imgl3wProcs.gl.UseProgram
#define glVertexAttribPointer imgl3wProcs.gl.VertexAttribPointer
#define glViewport imgl3wProcs.gl.Viewport
#ifdef __cplusplus
}
#endif
#endif
#ifdef IMGL3W_IMPL
#ifdef __cplusplus
extern "C" {
#endif
#include <stdlib.h>
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#if defined(_WIN32)
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif
#include <windows.h>
static HMODULE libgl;
typedef PROC(__stdcall* GL3WglGetProcAddr)(LPCSTR);
static GL3WglGetProcAddr wgl_get_proc_address;
static int open_libgl(void)
{
libgl = LoadLibraryA("opengl32.dll");
if (!libgl)
return GL3W_ERROR_LIBRARY_OPEN;
wgl_get_proc_address = (GL3WglGetProcAddr)GetProcAddress(libgl, "wglGetProcAddress");
return GL3W_OK;
}
static void close_libgl(void) { FreeLibrary(libgl); }
static GL3WglProc get_proc(const char *proc)
{
GL3WglProc res;
res = (GL3WglProc)wgl_get_proc_address(proc);
if (!res)
res = (GL3WglProc)GetProcAddress(libgl, proc);
return res;
}
#elif defined(__APPLE__)
#include <dlfcn.h>
static void *libgl;
static int open_libgl(void)
{
libgl = dlopen("/System/Library/Frameworks/OpenGL.framework/OpenGL", RTLD_LAZY | RTLD_LOCAL);
if (!libgl)
return GL3W_ERROR_LIBRARY_OPEN;
return GL3W_OK;
}
static void close_libgl(void) { dlclose(libgl); }
static GL3WglProc get_proc(const char *proc)
{
GL3WglProc res;
*(void **)(&res) = dlsym(libgl, proc);
return res;
}
#else
#include <dlfcn.h>
static void *libgl;
static GL3WglProc (*glx_get_proc_address)(const GLubyte *);
static int open_libgl(void)
{
libgl = dlopen("libGL.so.1", RTLD_LAZY | RTLD_LOCAL);
if (!libgl)
return GL3W_ERROR_LIBRARY_OPEN;
*(void **)(&glx_get_proc_address) = dlsym(libgl, "glXGetProcAddressARB");
return GL3W_OK;
}
static void close_libgl(void) { dlclose(libgl); }
static GL3WglProc get_proc(const char *proc)
{
GL3WglProc res;
res = glx_get_proc_address((const GLubyte *)proc);
if (!res)
*(void **)(&res) = dlsym(libgl, proc);
return res;
}
#endif
static struct { int major, minor; } version;
static int parse_version(void)
{
if (!glGetIntegerv)
return GL3W_ERROR_INIT;
glGetIntegerv(GL_MAJOR_VERSION, &version.major);
glGetIntegerv(GL_MINOR_VERSION, &version.minor);
if (version.major < 3)
return GL3W_ERROR_OPENGL_VERSION;
return GL3W_OK;
}
static void load_procs(GL3WGetProcAddressProc proc);
int imgl3wInit(void)
{
int res = open_libgl();
if (res)
return res;
atexit(close_libgl);
return imgl3wInit2(get_proc);
}
int imgl3wInit2(GL3WGetProcAddressProc proc)
{
load_procs(proc);
return parse_version();
}
int imgl3wIsSupported(int major, int minor)
{
if (major < 3)
return 0;
if (version.major == major)
return version.minor >= minor;
return version.major >= major;
}
GL3WglProc imgl3wGetProcAddress(const char *proc) { return get_proc(proc); }
static const char *proc_names[] = {
"glActiveTexture",
"glAttachShader",
"glBindBuffer",
"glBindSampler",
"glBindTexture",
"glBindVertexArray",
"glBlendEquation",
"glBlendEquationSeparate",
"glBlendFuncSeparate",
"glBufferData",
"glBufferSubData",
"glClear",
"glClearColor",
"glCompileShader",
"glCreateProgram",
"glCreateShader",
"glDeleteBuffers",
"glDeleteProgram",
"glDeleteShader",
"glDeleteTextures",
"glDeleteVertexArrays",
"glDetachShader",
"glDisable",
"glDisableVertexAttribArray",
"glDrawElements",
"glDrawElementsBaseVertex",
"glEnable",
"glEnableVertexAttribArray",
"glFlush",
"glGenBuffers",
"glGenTextures",
"glGenVertexArrays",
"glGetAttribLocation",
"glGetError",
"glGetIntegerv",
"glGetProgramInfoLog",
"glGetProgramiv",
"glGetShaderInfoLog",
"glGetShaderiv",
"glGetString",
"glGetStringi",
"glGetUniformLocation",
"glGetVertexAttribPointerv",
"glGetVertexAttribiv",
"glIsEnabled",
"glLinkProgram",
"glPixelStorei",
"glPolygonMode",
"glReadPixels",
"glScissor",
"glShaderSource",
"glTexImage2D",
"glTexParameteri",
"glUniform1i",
"glUniformMatrix4fv",
"glUseProgram",
"glVertexAttribPointer",
"glViewport",
};
GL3W_API union GL3WProcs imgl3wProcs;
static void load_procs(GL3WGetProcAddressProc proc)
{
size_t i;
for (i = 0; i < ARRAY_SIZE(proc_names); i++)
imgl3wProcs.ptr[i] = proc(proc_names[i]);
}
#ifdef __cplusplus
}
#endif
#endif

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// dear imgui: Renderer Backend for Vulkan
// This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..)
// Implemented features:
// [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
// [!] Renderer: User texture binding. Use 'VkDescriptorSet' as ImTextureID. Read the FAQ about ImTextureID! See https://github.com/ocornut/imgui/pull/914 for discussions.
// Important: on 32-bit systems, user texture binding is only supported if your imconfig file has '#define ImTextureID ImU64'.
// See imgui_impl_vulkan.cpp file for details.
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
// The aim of imgui_impl_vulkan.h/.cpp is to be usable in your engine without any modification.
// IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/
// Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
// - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
// You will use those if you want to use this rendering backend in your engine/app.
// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
// the backend itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
// Read comments in imgui_impl_vulkan.h.
#pragma once
#include "imgui.h" // IMGUI_IMPL_API
// [Configuration] in order to use a custom Vulkan function loader:
// (1) You'll need to disable default Vulkan function prototypes.
// We provide a '#define IMGUI_IMPL_VULKAN_NO_PROTOTYPES' convenience configuration flag.
// In order to make sure this is visible from the imgui_impl_vulkan.cpp compilation unit:
// - Add '#define IMGUI_IMPL_VULKAN_NO_PROTOTYPES' in your imconfig.h file
// - Or as a compilation flag in your build system
// - Or uncomment here (not recommended because you'd be modifying imgui sources!)
// - Do not simply add it in a .cpp file!
// (2) Call ImGui_ImplVulkan_LoadFunctions() before ImGui_ImplVulkan_Init() with your custom function.
// If you have no idea what this is, leave it alone!
//#define IMGUI_IMPL_VULKAN_NO_PROTOTYPES
// Vulkan includes
#if defined(IMGUI_IMPL_VULKAN_NO_PROTOTYPES) && !defined(VK_NO_PROTOTYPES)
#define VK_NO_PROTOTYPES
#endif
#include <vulkan/vulkan.h>
// Initialization data, for ImGui_ImplVulkan_Init()
// [Please zero-clear before use!]
struct ImGui_ImplVulkan_InitInfo
{
VkInstance Instance;
VkPhysicalDevice PhysicalDevice;
VkDevice Device;
uint32_t QueueFamily;
VkQueue Queue;
VkPipelineCache PipelineCache;
VkDescriptorPool DescriptorPool;
uint32_t Subpass;
uint32_t MinImageCount; // >= 2
uint32_t ImageCount; // >= MinImageCount
VkSampleCountFlagBits MSAASamples; // >= VK_SAMPLE_COUNT_1_BIT (0 -> default to VK_SAMPLE_COUNT_1_BIT)
const VkAllocationCallbacks* Allocator;
void (*CheckVkResultFn)(VkResult err);
};
// Called by user code
IMGUI_IMPL_API bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass);
IMGUI_IMPL_API void ImGui_ImplVulkan_Shutdown();
IMGUI_IMPL_API void ImGui_ImplVulkan_NewFrame();
IMGUI_IMPL_API void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer command_buffer, VkPipeline pipeline = VK_NULL_HANDLE);
IMGUI_IMPL_API bool ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer);
IMGUI_IMPL_API void ImGui_ImplVulkan_DestroyFontUploadObjects();
IMGUI_IMPL_API void ImGui_ImplVulkan_SetMinImageCount(uint32_t min_image_count); // To override MinImageCount after initialization (e.g. if swap chain is recreated)
// Register a texture (VkDescriptorSet == ImTextureID)
// FIXME: This is experimental in the sense that we are unsure how to best design/tackle this problem
// Please post to https://github.com/ocornut/imgui/pull/914 if you have suggestions.
IMGUI_IMPL_API VkDescriptorSet ImGui_ImplVulkan_AddTexture(VkSampler sampler, VkImageView image_view, VkImageLayout image_layout);
IMGUI_IMPL_API void ImGui_ImplVulkan_RemoveTexture(VkDescriptorSet descriptor_set);
// Optional: load Vulkan functions with a custom function loader
// This is only useful with IMGUI_IMPL_VULKAN_NO_PROTOTYPES / VK_NO_PROTOTYPES
IMGUI_IMPL_API bool ImGui_ImplVulkan_LoadFunctions(PFN_vkVoidFunction(*loader_func)(const char* function_name, void* user_data), void* user_data = nullptr);
//-------------------------------------------------------------------------
// Internal / Miscellaneous Vulkan Helpers
// (Used by example's main.cpp. Used by multi-viewport features. PROBABLY NOT used by your own engine/app.)
//-------------------------------------------------------------------------
// You probably do NOT need to use or care about those functions.
// Those functions only exist because:
// 1) they facilitate the readability and maintenance of the multiple main.cpp examples files.
// 2) the upcoming multi-viewport feature will need them internally.
// Generally we avoid exposing any kind of superfluous high-level helpers in the backends,
// but it is too much code to duplicate everywhere so we exceptionally expose them.
//
// Your engine/app will likely _already_ have code to setup all that stuff (swap chain, render pass, frame buffers, etc.).
// You may read this code to learn about Vulkan, but it is recommended you use you own custom tailored code to do equivalent work.
// (The ImGui_ImplVulkanH_XXX functions do not interact with any of the state used by the regular ImGui_ImplVulkan_XXX functions)
//-------------------------------------------------------------------------
struct ImGui_ImplVulkanH_Frame;
struct ImGui_ImplVulkanH_Window;
// Helpers
IMGUI_IMPL_API void ImGui_ImplVulkanH_CreateOrResizeWindow(VkInstance instance, VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wnd, uint32_t queue_family, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count);
IMGUI_IMPL_API void ImGui_ImplVulkanH_DestroyWindow(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_Window* wnd, const VkAllocationCallbacks* allocator);
IMGUI_IMPL_API VkSurfaceFormatKHR ImGui_ImplVulkanH_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space);
IMGUI_IMPL_API VkPresentModeKHR ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkPresentModeKHR* request_modes, int request_modes_count);
IMGUI_IMPL_API int ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(VkPresentModeKHR present_mode);
// Helper structure to hold the data needed by one rendering frame
// (Used by example's main.cpp. Used by multi-viewport features. Probably NOT used by your own engine/app.)
// [Please zero-clear before use!]
struct ImGui_ImplVulkanH_Frame
{
VkCommandPool CommandPool;
VkCommandBuffer CommandBuffer;
VkFence Fence;
VkImage Backbuffer;
VkImageView BackbufferView;
VkFramebuffer Framebuffer;
};
struct ImGui_ImplVulkanH_FrameSemaphores
{
VkSemaphore ImageAcquiredSemaphore;
VkSemaphore RenderCompleteSemaphore;
};
// Helper structure to hold the data needed by one rendering context into one OS window
// (Used by example's main.cpp. Used by multi-viewport features. Probably NOT used by your own engine/app.)
struct ImGui_ImplVulkanH_Window
{
int Width;
int Height;
VkSwapchainKHR Swapchain;
VkSurfaceKHR Surface;
VkSurfaceFormatKHR SurfaceFormat;
VkPresentModeKHR PresentMode;
VkRenderPass RenderPass;
VkPipeline Pipeline; // The window pipeline may uses a different VkRenderPass than the one passed in ImGui_ImplVulkan_InitInfo
bool ClearEnable;
VkClearValue ClearValue;
uint32_t FrameIndex; // Current frame being rendered to (0 <= FrameIndex < FrameInFlightCount)
uint32_t ImageCount; // Number of simultaneous in-flight frames (returned by vkGetSwapchainImagesKHR, usually derived from min_image_count)
uint32_t SemaphoreIndex; // Current set of swapchain wait semaphores we're using (needs to be distinct from per frame data)
ImGui_ImplVulkanH_Frame* Frames;
ImGui_ImplVulkanH_FrameSemaphores* FrameSemaphores;
ImGui_ImplVulkanH_Window()
{
memset((void*)this, 0, sizeof(*this));
PresentMode = (VkPresentModeKHR)~0; // Ensure we get an error if user doesn't set this.
ClearEnable = true;
}
};

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// dear imgui: Platform Backend for Windows (standard windows API for 32-bits AND 64-bits applications)
// This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
// Implemented features:
// [X] Platform: Clipboard support (for Win32 this is actually part of core dear imgui)
// [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy VK_* values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]
// [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
// [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
#include "imgui.h"
#include "imgui_impl_win32.h"
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#include <windowsx.h> // GET_X_LPARAM(), GET_Y_LPARAM()
#include <tchar.h>
#include <dwmapi.h>
// Configuration flags to add in your imconfig.h file:
//#define IMGUI_IMPL_WIN32_DISABLE_GAMEPAD // Disable gamepad support. This was meaningful before <1.81 but we now load XInput dynamically so the option is now less relevant.
// Using XInput for gamepad (will load DLL dynamically)
#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
#include <xinput.h>
typedef DWORD (WINAPI *PFN_XInputGetCapabilities)(DWORD, DWORD, XINPUT_CAPABILITIES*);
typedef DWORD (WINAPI *PFN_XInputGetState)(DWORD, XINPUT_STATE*);
#endif
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
// 2022-09-28: Inputs: Convert WM_CHAR values with MultiByteToWideChar() when window class was registered as MBCS (not Unicode).
// 2022-09-26: Inputs: Renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported).
// 2022-01-26: Inputs: replaced short-lived io.AddKeyModsEvent() (added two weeks ago) with io.AddKeyEvent() using ImGuiKey_ModXXX flags. Sorry for the confusion.
// 2021-01-20: Inputs: calling new io.AddKeyAnalogEvent() for gamepad support, instead of writing directly to io.NavInputs[].
// 2022-01-17: Inputs: calling new io.AddMousePosEvent(), io.AddMouseButtonEvent(), io.AddMouseWheelEvent() API (1.87+).
// 2022-01-17: Inputs: always update key mods next and before a key event (not in NewFrame) to fix input queue with very low framerates.
// 2022-01-12: Inputs: Update mouse inputs using WM_MOUSEMOVE/WM_MOUSELEAVE + fallback to provide it when focused but not hovered/captured. More standard and will allow us to pass it to future input queue API.
// 2022-01-12: Inputs: Maintain our own copy of MouseButtonsDown mask instead of using ImGui::IsAnyMouseDown() which will be obsoleted.
// 2022-01-10: Inputs: calling new io.AddKeyEvent(), io.AddKeyModsEvent() + io.SetKeyEventNativeData() API (1.87+). Support for full ImGuiKey range.
// 2021-12-16: Inputs: Fill VK_LCONTROL/VK_RCONTROL/VK_LSHIFT/VK_RSHIFT/VK_LMENU/VK_RMENU for completeness.
// 2021-08-17: Calling io.AddFocusEvent() on WM_SETFOCUS/WM_KILLFOCUS messages.
// 2021-08-02: Inputs: Fixed keyboard modifiers being reported when host window doesn't have focus.
// 2021-07-29: Inputs: MousePos is correctly reported when the host platform window is hovered but not focused (using TrackMouseEvent() to receive WM_MOUSELEAVE events).
// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
// 2021-06-08: Fixed ImGui_ImplWin32_EnableDpiAwareness() and ImGui_ImplWin32_GetDpiScaleForMonitor() to handle Windows 8.1/10 features without a manifest (per-monitor DPI, and properly calls SetProcessDpiAwareness() on 8.1).
// 2021-03-23: Inputs: Clearing keyboard down array when losing focus (WM_KILLFOCUS).
// 2021-02-18: Added ImGui_ImplWin32_EnableAlphaCompositing(). Non Visual Studio users will need to link with dwmapi.lib (MinGW/gcc: use -ldwmapi).
// 2021-02-17: Fixed ImGui_ImplWin32_EnableDpiAwareness() attempting to get SetProcessDpiAwareness from shcore.dll on Windows 8 whereas it is only supported on Windows 8.1.
// 2021-01-25: Inputs: Dynamically loading XInput DLL.
// 2020-12-04: Misc: Fixed setting of io.DisplaySize to invalid/uninitialized data when after hwnd has been closed.
// 2020-03-03: Inputs: Calling AddInputCharacterUTF16() to support surrogate pairs leading to codepoint >= 0x10000 (for more complete CJK inputs)
// 2020-02-17: Added ImGui_ImplWin32_EnableDpiAwareness(), ImGui_ImplWin32_GetDpiScaleForHwnd(), ImGui_ImplWin32_GetDpiScaleForMonitor() helper functions.
// 2020-01-14: Inputs: Added support for #define IMGUI_IMPL_WIN32_DISABLE_GAMEPAD/IMGUI_IMPL_WIN32_DISABLE_LINKING_XINPUT.
// 2019-12-05: Inputs: Added support for ImGuiMouseCursor_NotAllowed mouse cursor.
// 2019-05-11: Inputs: Don't filter value from WM_CHAR before calling AddInputCharacter().
// 2019-01-17: Misc: Using GetForegroundWindow()+IsChild() instead of GetActiveWindow() to be compatible with windows created in a different thread or parent.
// 2019-01-17: Inputs: Added support for mouse buttons 4 and 5 via WM_XBUTTON* messages.
// 2019-01-15: Inputs: Added support for XInput gamepads (if ImGuiConfigFlags_NavEnableGamepad is set by user application).
// 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
// 2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor.
// 2018-06-10: Inputs: Fixed handling of mouse wheel messages to support fine position messages (typically sent by track-pads).
// 2018-06-08: Misc: Extracted imgui_impl_win32.cpp/.h away from the old combined DX9/DX10/DX11/DX12 examples.
// 2018-03-20: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors and ImGuiBackendFlags_HasSetMousePos flags + honor ImGuiConfigFlags_NoMouseCursorChange flag.
// 2018-02-20: Inputs: Added support for mouse cursors (ImGui::GetMouseCursor() value and WM_SETCURSOR message handling).
// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
// 2018-02-06: Inputs: Honoring the io.WantSetMousePos by repositioning the mouse (when using navigation and ImGuiConfigFlags_NavMoveMouse is set).
// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
// 2018-01-20: Inputs: Added Horizontal Mouse Wheel support.
// 2018-01-08: Inputs: Added mapping for ImGuiKey_Insert.
// 2018-01-05: Inputs: Added WM_LBUTTONDBLCLK double-click handlers for window classes with the CS_DBLCLKS flag.
// 2017-10-23: Inputs: Added WM_SYSKEYDOWN / WM_SYSKEYUP handlers so e.g. the VK_MENU key can be read.
// 2017-10-23: Inputs: Using Win32 ::SetCapture/::GetCapture() to retrieve mouse positions outside the client area when dragging.
// 2016-11-12: Inputs: Only call Win32 ::SetCursor(nullptr) when io.MouseDrawCursor is set.
struct ImGui_ImplWin32_Data
{
HWND hWnd;
HWND MouseHwnd;
bool MouseTracked;
int MouseButtonsDown;
INT64 Time;
INT64 TicksPerSecond;
ImGuiMouseCursor LastMouseCursor;
#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
bool HasGamepad;
bool WantUpdateHasGamepad;
HMODULE XInputDLL;
PFN_XInputGetCapabilities XInputGetCapabilities;
PFN_XInputGetState XInputGetState;
#endif
ImGui_ImplWin32_Data() { memset((void*)this, 0, sizeof(*this)); }
};
// Backend data stored in io.BackendPlatformUserData to allow support for multiple Dear ImGui contexts
// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
// FIXME: multi-context support is not well tested and probably dysfunctional in this backend.
// FIXME: some shared resources (mouse cursor shape, gamepad) are mishandled when using multi-context.
static ImGui_ImplWin32_Data* ImGui_ImplWin32_GetBackendData()
{
return ImGui::GetCurrentContext() ? (ImGui_ImplWin32_Data*)ImGui::GetIO().BackendPlatformUserData : nullptr;
}
// Functions
bool ImGui_ImplWin32_Init(void* hwnd)
{
ImGuiIO& io = ImGui::GetIO();
IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
INT64 perf_frequency, perf_counter;
if (!::QueryPerformanceFrequency((LARGE_INTEGER*)&perf_frequency))
return false;
if (!::QueryPerformanceCounter((LARGE_INTEGER*)&perf_counter))
return false;
// Setup backend capabilities flags
ImGui_ImplWin32_Data* bd = IM_NEW(ImGui_ImplWin32_Data)();
io.BackendPlatformUserData = (void*)bd;
io.BackendPlatformName = "imgui_impl_win32";
io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional)
io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used)
bd->hWnd = (HWND)hwnd;
bd->TicksPerSecond = perf_frequency;
bd->Time = perf_counter;
bd->LastMouseCursor = ImGuiMouseCursor_COUNT;
// Set platform dependent data in viewport
ImGui::GetMainViewport()->PlatformHandleRaw = (void*)hwnd;
// Dynamically load XInput library
#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
bd->WantUpdateHasGamepad = true;
const char* xinput_dll_names[] =
{
"xinput1_4.dll", // Windows 8+
"xinput1_3.dll", // DirectX SDK
"xinput9_1_0.dll", // Windows Vista, Windows 7
"xinput1_2.dll", // DirectX SDK
"xinput1_1.dll" // DirectX SDK
};
for (int n = 0; n < IM_ARRAYSIZE(xinput_dll_names); n++)
if (HMODULE dll = ::LoadLibraryA(xinput_dll_names[n]))
{
bd->XInputDLL = dll;
bd->XInputGetCapabilities = (PFN_XInputGetCapabilities)::GetProcAddress(dll, "XInputGetCapabilities");
bd->XInputGetState = (PFN_XInputGetState)::GetProcAddress(dll, "XInputGetState");
break;
}
#endif // IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
return true;
}
void ImGui_ImplWin32_Shutdown()
{
ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData();
IM_ASSERT(bd != nullptr && "No platform backend to shutdown, or already shutdown?");
ImGuiIO& io = ImGui::GetIO();
// Unload XInput library
#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
if (bd->XInputDLL)
::FreeLibrary(bd->XInputDLL);
#endif // IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
io.BackendPlatformName = nullptr;
io.BackendPlatformUserData = nullptr;
IM_DELETE(bd);
}
static bool ImGui_ImplWin32_UpdateMouseCursor()
{
ImGuiIO& io = ImGui::GetIO();
if (io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange)
return false;
ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();
if (imgui_cursor == ImGuiMouseCursor_None || io.MouseDrawCursor)
{
// Hide OS mouse cursor if imgui is drawing it or if it wants no cursor
::SetCursor(nullptr);
}
else
{
// Show OS mouse cursor
LPTSTR win32_cursor = IDC_ARROW;
switch (imgui_cursor)
{
case ImGuiMouseCursor_Arrow: win32_cursor = IDC_ARROW; break;
case ImGuiMouseCursor_TextInput: win32_cursor = IDC_IBEAM; break;
case ImGuiMouseCursor_ResizeAll: win32_cursor = IDC_SIZEALL; break;
case ImGuiMouseCursor_ResizeEW: win32_cursor = IDC_SIZEWE; break;
case ImGuiMouseCursor_ResizeNS: win32_cursor = IDC_SIZENS; break;
case ImGuiMouseCursor_ResizeNESW: win32_cursor = IDC_SIZENESW; break;
case ImGuiMouseCursor_ResizeNWSE: win32_cursor = IDC_SIZENWSE; break;
case ImGuiMouseCursor_Hand: win32_cursor = IDC_HAND; break;
case ImGuiMouseCursor_NotAllowed: win32_cursor = IDC_NO; break;
}
::SetCursor(::LoadCursor(nullptr, win32_cursor));
}
return true;
}
static bool IsVkDown(int vk)
{
return (::GetKeyState(vk) & 0x8000) != 0;
}
static void ImGui_ImplWin32_AddKeyEvent(ImGuiKey key, bool down, int native_keycode, int native_scancode = -1)
{
ImGuiIO& io = ImGui::GetIO();
io.AddKeyEvent(key, down);
io.SetKeyEventNativeData(key, native_keycode, native_scancode); // To support legacy indexing (<1.87 user code)
IM_UNUSED(native_scancode);
}
static void ImGui_ImplWin32_ProcessKeyEventsWorkarounds()
{
// Left & right Shift keys: when both are pressed together, Windows tend to not generate the WM_KEYUP event for the first released one.
if (ImGui::IsKeyDown(ImGuiKey_LeftShift) && !IsVkDown(VK_LSHIFT))
ImGui_ImplWin32_AddKeyEvent(ImGuiKey_LeftShift, false, VK_LSHIFT);
if (ImGui::IsKeyDown(ImGuiKey_RightShift) && !IsVkDown(VK_RSHIFT))
ImGui_ImplWin32_AddKeyEvent(ImGuiKey_RightShift, false, VK_RSHIFT);
// Sometimes WM_KEYUP for Win key is not passed down to the app (e.g. for Win+V on some setups, according to GLFW).
if (ImGui::IsKeyDown(ImGuiKey_LeftSuper) && !IsVkDown(VK_LWIN))
ImGui_ImplWin32_AddKeyEvent(ImGuiKey_LeftSuper, false, VK_LWIN);
if (ImGui::IsKeyDown(ImGuiKey_RightSuper) && !IsVkDown(VK_RWIN))
ImGui_ImplWin32_AddKeyEvent(ImGuiKey_RightSuper, false, VK_RWIN);
}
static void ImGui_ImplWin32_UpdateKeyModifiers()
{
ImGuiIO& io = ImGui::GetIO();
io.AddKeyEvent(ImGuiMod_Ctrl, IsVkDown(VK_CONTROL));
io.AddKeyEvent(ImGuiMod_Shift, IsVkDown(VK_SHIFT));
io.AddKeyEvent(ImGuiMod_Alt, IsVkDown(VK_MENU));
io.AddKeyEvent(ImGuiMod_Super, IsVkDown(VK_APPS));
}
static void ImGui_ImplWin32_UpdateMouseData()
{
ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData();
ImGuiIO& io = ImGui::GetIO();
IM_ASSERT(bd->hWnd != 0);
const bool is_app_focused = (::GetForegroundWindow() == bd->hWnd);
if (is_app_focused)
{
// (Optional) Set OS mouse position from Dear ImGui if requested (rarely used, only when ImGuiConfigFlags_NavEnableSetMousePos is enabled by user)
if (io.WantSetMousePos)
{
POINT pos = { (int)io.MousePos.x, (int)io.MousePos.y };
if (::ClientToScreen(bd->hWnd, &pos))
::SetCursorPos(pos.x, pos.y);
}
// (Optional) Fallback to provide mouse position when focused (WM_MOUSEMOVE already provides this when hovered or captured)
if (!io.WantSetMousePos && !bd->MouseTracked)
{
POINT pos;
if (::GetCursorPos(&pos) && ::ScreenToClient(bd->hWnd, &pos))
io.AddMousePosEvent((float)pos.x, (float)pos.y);
}
}
}
// Gamepad navigation mapping
static void ImGui_ImplWin32_UpdateGamepads()
{
#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData();
//if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0) // FIXME: Technically feeding gamepad shouldn't depend on this now that they are regular inputs.
// return;
// Calling XInputGetState() every frame on disconnected gamepads is unfortunately too slow.
// Instead we refresh gamepad availability by calling XInputGetCapabilities() _only_ after receiving WM_DEVICECHANGE.
if (bd->WantUpdateHasGamepad)
{
XINPUT_CAPABILITIES caps = {};
bd->HasGamepad = bd->XInputGetCapabilities ? (bd->XInputGetCapabilities(0, XINPUT_FLAG_GAMEPAD, &caps) == ERROR_SUCCESS) : false;
bd->WantUpdateHasGamepad = false;
}
io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
XINPUT_STATE xinput_state;
XINPUT_GAMEPAD& gamepad = xinput_state.Gamepad;
if (!bd->HasGamepad || bd->XInputGetState == nullptr || bd->XInputGetState(0, &xinput_state) != ERROR_SUCCESS)
return;
io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
#define IM_SATURATE(V) (V < 0.0f ? 0.0f : V > 1.0f ? 1.0f : V)
#define MAP_BUTTON(KEY_NO, BUTTON_ENUM) { io.AddKeyEvent(KEY_NO, (gamepad.wButtons & BUTTON_ENUM) != 0); }
#define MAP_ANALOG(KEY_NO, VALUE, V0, V1) { float vn = (float)(VALUE - V0) / (float)(V1 - V0); io.AddKeyAnalogEvent(KEY_NO, vn > 0.10f, IM_SATURATE(vn)); }
MAP_BUTTON(ImGuiKey_GamepadStart, XINPUT_GAMEPAD_START);
MAP_BUTTON(ImGuiKey_GamepadBack, XINPUT_GAMEPAD_BACK);
MAP_BUTTON(ImGuiKey_GamepadFaceLeft, XINPUT_GAMEPAD_X);
MAP_BUTTON(ImGuiKey_GamepadFaceRight, XINPUT_GAMEPAD_B);
MAP_BUTTON(ImGuiKey_GamepadFaceUp, XINPUT_GAMEPAD_Y);
MAP_BUTTON(ImGuiKey_GamepadFaceDown, XINPUT_GAMEPAD_A);
MAP_BUTTON(ImGuiKey_GamepadDpadLeft, XINPUT_GAMEPAD_DPAD_LEFT);
MAP_BUTTON(ImGuiKey_GamepadDpadRight, XINPUT_GAMEPAD_DPAD_RIGHT);
MAP_BUTTON(ImGuiKey_GamepadDpadUp, XINPUT_GAMEPAD_DPAD_UP);
MAP_BUTTON(ImGuiKey_GamepadDpadDown, XINPUT_GAMEPAD_DPAD_DOWN);
MAP_BUTTON(ImGuiKey_GamepadL1, XINPUT_GAMEPAD_LEFT_SHOULDER);
MAP_BUTTON(ImGuiKey_GamepadR1, XINPUT_GAMEPAD_RIGHT_SHOULDER);
MAP_ANALOG(ImGuiKey_GamepadL2, gamepad.bLeftTrigger, XINPUT_GAMEPAD_TRIGGER_THRESHOLD, 255);
MAP_ANALOG(ImGuiKey_GamepadR2, gamepad.bRightTrigger, XINPUT_GAMEPAD_TRIGGER_THRESHOLD, 255);
MAP_BUTTON(ImGuiKey_GamepadL3, XINPUT_GAMEPAD_LEFT_THUMB);
MAP_BUTTON(ImGuiKey_GamepadR3, XINPUT_GAMEPAD_RIGHT_THUMB);
MAP_ANALOG(ImGuiKey_GamepadLStickLeft, gamepad.sThumbLX, -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, -32768);
MAP_ANALOG(ImGuiKey_GamepadLStickRight, gamepad.sThumbLX, +XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, +32767);
MAP_ANALOG(ImGuiKey_GamepadLStickUp, gamepad.sThumbLY, +XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, +32767);
MAP_ANALOG(ImGuiKey_GamepadLStickDown, gamepad.sThumbLY, -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, -32768);
MAP_ANALOG(ImGuiKey_GamepadRStickLeft, gamepad.sThumbRX, -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, -32768);
MAP_ANALOG(ImGuiKey_GamepadRStickRight, gamepad.sThumbRX, +XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, +32767);
MAP_ANALOG(ImGuiKey_GamepadRStickUp, gamepad.sThumbRY, +XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, +32767);
MAP_ANALOG(ImGuiKey_GamepadRStickDown, gamepad.sThumbRY, -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, -32768);
#undef MAP_BUTTON
#undef MAP_ANALOG
#endif // #ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
}
void ImGui_ImplWin32_NewFrame()
{
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData();
IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplWin32_Init()?");
// Setup display size (every frame to accommodate for window resizing)
RECT rect = { 0, 0, 0, 0 };
::GetClientRect(bd->hWnd, &rect);
io.DisplaySize = ImVec2((float)(rect.right - rect.left), (float)(rect.bottom - rect.top));
// Setup time step
INT64 current_time = 0;
::QueryPerformanceCounter((LARGE_INTEGER*)&current_time);
io.DeltaTime = (float)(current_time - bd->Time) / bd->TicksPerSecond;
bd->Time = current_time;
// Update OS mouse position
ImGui_ImplWin32_UpdateMouseData();
// Process workarounds for known Windows key handling issues
ImGui_ImplWin32_ProcessKeyEventsWorkarounds();
// Update OS mouse cursor with the cursor requested by imgui
ImGuiMouseCursor mouse_cursor = io.MouseDrawCursor ? ImGuiMouseCursor_None : ImGui::GetMouseCursor();
if (bd->LastMouseCursor != mouse_cursor)
{
bd->LastMouseCursor = mouse_cursor;
ImGui_ImplWin32_UpdateMouseCursor();
}
// Update game controllers (if enabled and available)
ImGui_ImplWin32_UpdateGamepads();
}
// There is no distinct VK_xxx for keypad enter, instead it is VK_RETURN + KF_EXTENDED, we assign it an arbitrary value to make code more readable (VK_ codes go up to 255)
#define IM_VK_KEYPAD_ENTER (VK_RETURN + 256)
// Map VK_xxx to ImGuiKey_xxx.
static ImGuiKey ImGui_ImplWin32_VirtualKeyToImGuiKey(WPARAM wParam)
{
switch (wParam)
{
case VK_TAB: return ImGuiKey_Tab;
case VK_LEFT: return ImGuiKey_LeftArrow;
case VK_RIGHT: return ImGuiKey_RightArrow;
case VK_UP: return ImGuiKey_UpArrow;
case VK_DOWN: return ImGuiKey_DownArrow;
case VK_PRIOR: return ImGuiKey_PageUp;
case VK_NEXT: return ImGuiKey_PageDown;
case VK_HOME: return ImGuiKey_Home;
case VK_END: return ImGuiKey_End;
case VK_INSERT: return ImGuiKey_Insert;
case VK_DELETE: return ImGuiKey_Delete;
case VK_BACK: return ImGuiKey_Backspace;
case VK_SPACE: return ImGuiKey_Space;
case VK_RETURN: return ImGuiKey_Enter;
case VK_ESCAPE: return ImGuiKey_Escape;
case VK_OEM_7: return ImGuiKey_Apostrophe;
case VK_OEM_COMMA: return ImGuiKey_Comma;
case VK_OEM_MINUS: return ImGuiKey_Minus;
case VK_OEM_PERIOD: return ImGuiKey_Period;
case VK_OEM_2: return ImGuiKey_Slash;
case VK_OEM_1: return ImGuiKey_Semicolon;
case VK_OEM_PLUS: return ImGuiKey_Equal;
case VK_OEM_4: return ImGuiKey_LeftBracket;
case VK_OEM_5: return ImGuiKey_Backslash;
case VK_OEM_6: return ImGuiKey_RightBracket;
case VK_OEM_3: return ImGuiKey_GraveAccent;
case VK_CAPITAL: return ImGuiKey_CapsLock;
case VK_SCROLL: return ImGuiKey_ScrollLock;
case VK_NUMLOCK: return ImGuiKey_NumLock;
case VK_SNAPSHOT: return ImGuiKey_PrintScreen;
case VK_PAUSE: return ImGuiKey_Pause;
case VK_NUMPAD0: return ImGuiKey_Keypad0;
case VK_NUMPAD1: return ImGuiKey_Keypad1;
case VK_NUMPAD2: return ImGuiKey_Keypad2;
case VK_NUMPAD3: return ImGuiKey_Keypad3;
case VK_NUMPAD4: return ImGuiKey_Keypad4;
case VK_NUMPAD5: return ImGuiKey_Keypad5;
case VK_NUMPAD6: return ImGuiKey_Keypad6;
case VK_NUMPAD7: return ImGuiKey_Keypad7;
case VK_NUMPAD8: return ImGuiKey_Keypad8;
case VK_NUMPAD9: return ImGuiKey_Keypad9;
case VK_DECIMAL: return ImGuiKey_KeypadDecimal;
case VK_DIVIDE: return ImGuiKey_KeypadDivide;
case VK_MULTIPLY: return ImGuiKey_KeypadMultiply;
case VK_SUBTRACT: return ImGuiKey_KeypadSubtract;
case VK_ADD: return ImGuiKey_KeypadAdd;
case IM_VK_KEYPAD_ENTER: return ImGuiKey_KeypadEnter;
case VK_LSHIFT: return ImGuiKey_LeftShift;
case VK_LCONTROL: return ImGuiKey_LeftCtrl;
case VK_LMENU: return ImGuiKey_LeftAlt;
case VK_LWIN: return ImGuiKey_LeftSuper;
case VK_RSHIFT: return ImGuiKey_RightShift;
case VK_RCONTROL: return ImGuiKey_RightCtrl;
case VK_RMENU: return ImGuiKey_RightAlt;
case VK_RWIN: return ImGuiKey_RightSuper;
case VK_APPS: return ImGuiKey_Menu;
case '0': return ImGuiKey_0;
case '1': return ImGuiKey_1;
case '2': return ImGuiKey_2;
case '3': return ImGuiKey_3;
case '4': return ImGuiKey_4;
case '5': return ImGuiKey_5;
case '6': return ImGuiKey_6;
case '7': return ImGuiKey_7;
case '8': return ImGuiKey_8;
case '9': return ImGuiKey_9;
case 'A': return ImGuiKey_A;
case 'B': return ImGuiKey_B;
case 'C': return ImGuiKey_C;
case 'D': return ImGuiKey_D;
case 'E': return ImGuiKey_E;
case 'F': return ImGuiKey_F;
case 'G': return ImGuiKey_G;
case 'H': return ImGuiKey_H;
case 'I': return ImGuiKey_I;
case 'J': return ImGuiKey_J;
case 'K': return ImGuiKey_K;
case 'L': return ImGuiKey_L;
case 'M': return ImGuiKey_M;
case 'N': return ImGuiKey_N;
case 'O': return ImGuiKey_O;
case 'P': return ImGuiKey_P;
case 'Q': return ImGuiKey_Q;
case 'R': return ImGuiKey_R;
case 'S': return ImGuiKey_S;
case 'T': return ImGuiKey_T;
case 'U': return ImGuiKey_U;
case 'V': return ImGuiKey_V;
case 'W': return ImGuiKey_W;
case 'X': return ImGuiKey_X;
case 'Y': return ImGuiKey_Y;
case 'Z': return ImGuiKey_Z;
case VK_F1: return ImGuiKey_F1;
case VK_F2: return ImGuiKey_F2;
case VK_F3: return ImGuiKey_F3;
case VK_F4: return ImGuiKey_F4;
case VK_F5: return ImGuiKey_F5;
case VK_F6: return ImGuiKey_F6;
case VK_F7: return ImGuiKey_F7;
case VK_F8: return ImGuiKey_F8;
case VK_F9: return ImGuiKey_F9;
case VK_F10: return ImGuiKey_F10;
case VK_F11: return ImGuiKey_F11;
case VK_F12: return ImGuiKey_F12;
default: return ImGuiKey_None;
}
}
// Allow compilation with old Windows SDK. MinGW doesn't have default _WIN32_WINNT/WINVER versions.
#ifndef WM_MOUSEHWHEEL
#define WM_MOUSEHWHEEL 0x020E
#endif
#ifndef DBT_DEVNODES_CHANGED
#define DBT_DEVNODES_CHANGED 0x0007
#endif
// Win32 message handler (process Win32 mouse/keyboard inputs, etc.)
// Call from your application's message handler. Keep calling your message handler unless this function returns TRUE.
// When implementing your own backend, you can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if Dear ImGui wants to use your inputs.
// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
// Generally you may always pass all inputs to Dear ImGui, and hide them from your application based on those two flags.
// PS: In this Win32 handler, we use the capture API (GetCapture/SetCapture/ReleaseCapture) to be able to read mouse coordinates when dragging mouse outside of our window bounds.
// PS: We treat DBLCLK messages as regular mouse down messages, so this code will work on windows classes that have the CS_DBLCLKS flag set. Our own example app code doesn't set this flag.
#if 0
// Copy this line into your .cpp file to forward declare the function.
extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
#endif
IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
if (ImGui::GetCurrentContext() == nullptr)
return 0;
ImGuiIO& io = ImGui::GetIO();
ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData();
switch (msg)
{
case WM_MOUSEMOVE:
// We need to call TrackMouseEvent in order to receive WM_MOUSELEAVE events
bd->MouseHwnd = hwnd;
if (!bd->MouseTracked)
{
TRACKMOUSEEVENT tme = { sizeof(tme), TME_LEAVE, hwnd, 0 };
::TrackMouseEvent(&tme);
bd->MouseTracked = true;
}
io.AddMousePosEvent((float)GET_X_LPARAM(lParam), (float)GET_Y_LPARAM(lParam));
break;
case WM_MOUSELEAVE:
if (bd->MouseHwnd == hwnd)
bd->MouseHwnd = nullptr;
bd->MouseTracked = false;
io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
break;
case WM_LBUTTONDOWN: case WM_LBUTTONDBLCLK:
case WM_RBUTTONDOWN: case WM_RBUTTONDBLCLK:
case WM_MBUTTONDOWN: case WM_MBUTTONDBLCLK:
case WM_XBUTTONDOWN: case WM_XBUTTONDBLCLK:
{
int button = 0;
if (msg == WM_LBUTTONDOWN || msg == WM_LBUTTONDBLCLK) { button = 0; }
if (msg == WM_RBUTTONDOWN || msg == WM_RBUTTONDBLCLK) { button = 1; }
if (msg == WM_MBUTTONDOWN || msg == WM_MBUTTONDBLCLK) { button = 2; }
if (msg == WM_XBUTTONDOWN || msg == WM_XBUTTONDBLCLK) { button = (GET_XBUTTON_WPARAM(wParam) == XBUTTON1) ? 3 : 4; }
if (bd->MouseButtonsDown == 0 && ::GetCapture() == nullptr)
::SetCapture(hwnd);
bd->MouseButtonsDown |= 1 << button;
io.AddMouseButtonEvent(button, true);
return 0;
}
case WM_LBUTTONUP:
case WM_RBUTTONUP:
case WM_MBUTTONUP:
case WM_XBUTTONUP:
{
int button = 0;
if (msg == WM_LBUTTONUP) { button = 0; }
if (msg == WM_RBUTTONUP) { button = 1; }
if (msg == WM_MBUTTONUP) { button = 2; }
if (msg == WM_XBUTTONUP) { button = (GET_XBUTTON_WPARAM(wParam) == XBUTTON1) ? 3 : 4; }
bd->MouseButtonsDown &= ~(1 << button);
if (bd->MouseButtonsDown == 0 && ::GetCapture() == hwnd)
::ReleaseCapture();
io.AddMouseButtonEvent(button, false);
return 0;
}
case WM_MOUSEWHEEL:
io.AddMouseWheelEvent(0.0f, (float)GET_WHEEL_DELTA_WPARAM(wParam) / (float)WHEEL_DELTA);
return 0;
case WM_MOUSEHWHEEL:
io.AddMouseWheelEvent((float)GET_WHEEL_DELTA_WPARAM(wParam) / (float)WHEEL_DELTA, 0.0f);
return 0;
case WM_KEYDOWN:
case WM_KEYUP:
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
{
const bool is_key_down = (msg == WM_KEYDOWN || msg == WM_SYSKEYDOWN);
if (wParam < 256)
{
// Submit modifiers
ImGui_ImplWin32_UpdateKeyModifiers();
// Obtain virtual key code
// (keypad enter doesn't have its own... VK_RETURN with KF_EXTENDED flag means keypad enter, see IM_VK_KEYPAD_ENTER definition for details, it is mapped to ImGuiKey_KeyPadEnter.)
int vk = (int)wParam;
if ((wParam == VK_RETURN) && (HIWORD(lParam) & KF_EXTENDED))
vk = IM_VK_KEYPAD_ENTER;
// Submit key event
const ImGuiKey key = ImGui_ImplWin32_VirtualKeyToImGuiKey(vk);
const int scancode = (int)LOBYTE(HIWORD(lParam));
if (key != ImGuiKey_None)
ImGui_ImplWin32_AddKeyEvent(key, is_key_down, vk, scancode);
// Submit individual left/right modifier events
if (vk == VK_SHIFT)
{
// Important: Shift keys tend to get stuck when pressed together, missing key-up events are corrected in ImGui_ImplWin32_ProcessKeyEventsWorkarounds()
if (IsVkDown(VK_LSHIFT) == is_key_down) { ImGui_ImplWin32_AddKeyEvent(ImGuiKey_LeftShift, is_key_down, VK_LSHIFT, scancode); }
if (IsVkDown(VK_RSHIFT) == is_key_down) { ImGui_ImplWin32_AddKeyEvent(ImGuiKey_RightShift, is_key_down, VK_RSHIFT, scancode); }
}
else if (vk == VK_CONTROL)
{
if (IsVkDown(VK_LCONTROL) == is_key_down) { ImGui_ImplWin32_AddKeyEvent(ImGuiKey_LeftCtrl, is_key_down, VK_LCONTROL, scancode); }
if (IsVkDown(VK_RCONTROL) == is_key_down) { ImGui_ImplWin32_AddKeyEvent(ImGuiKey_RightCtrl, is_key_down, VK_RCONTROL, scancode); }
}
else if (vk == VK_MENU)
{
if (IsVkDown(VK_LMENU) == is_key_down) { ImGui_ImplWin32_AddKeyEvent(ImGuiKey_LeftAlt, is_key_down, VK_LMENU, scancode); }
if (IsVkDown(VK_RMENU) == is_key_down) { ImGui_ImplWin32_AddKeyEvent(ImGuiKey_RightAlt, is_key_down, VK_RMENU, scancode); }
}
}
return 0;
}
case WM_SETFOCUS:
case WM_KILLFOCUS:
io.AddFocusEvent(msg == WM_SETFOCUS);
return 0;
case WM_CHAR:
if (::IsWindowUnicode(hwnd))
{
// You can also use ToAscii()+GetKeyboardState() to retrieve characters.
if (wParam > 0 && wParam < 0x10000)
io.AddInputCharacterUTF16((unsigned short)wParam);
}
else
{
wchar_t wch = 0;
::MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, (char*)&wParam, 1, &wch, 1);
io.AddInputCharacter(wch);
}
return 0;
case WM_SETCURSOR:
// This is required to restore cursor when transitioning from e.g resize borders to client area.
if (LOWORD(lParam) == HTCLIENT && ImGui_ImplWin32_UpdateMouseCursor())
return 1;
return 0;
case WM_DEVICECHANGE:
#ifndef IMGUI_IMPL_WIN32_DISABLE_GAMEPAD
if ((UINT)wParam == DBT_DEVNODES_CHANGED)
bd->WantUpdateHasGamepad = true;
#endif
return 0;
}
return 0;
}
//--------------------------------------------------------------------------------------------------------
// DPI-related helpers (optional)
//--------------------------------------------------------------------------------------------------------
// - Use to enable DPI awareness without having to create an application manifest.
// - Your own app may already do this via a manifest or explicit calls. This is mostly useful for our examples/ apps.
// - In theory we could call simple functions from Windows SDK such as SetProcessDPIAware(), SetProcessDpiAwareness(), etc.
// but most of the functions provided by Microsoft require Windows 8.1/10+ SDK at compile time and Windows 8/10+ at runtime,
// neither we want to require the user to have. So we dynamically select and load those functions to avoid dependencies.
//---------------------------------------------------------------------------------------------------------
// This is the scheme successfully used by GLFW (from which we borrowed some of the code) and other apps aiming to be highly portable.
// ImGui_ImplWin32_EnableDpiAwareness() is just a helper called by main.cpp, we don't call it automatically.
// If you are trying to implement your own backend for your own engine, you may ignore that noise.
//---------------------------------------------------------------------------------------------------------
// Perform our own check with RtlVerifyVersionInfo() instead of using functions from <VersionHelpers.h> as they
// require a manifest to be functional for checks above 8.1. See https://github.com/ocornut/imgui/issues/4200
static BOOL _IsWindowsVersionOrGreater(WORD major, WORD minor, WORD)
{
typedef LONG(WINAPI* PFN_RtlVerifyVersionInfo)(OSVERSIONINFOEXW*, ULONG, ULONGLONG);
static PFN_RtlVerifyVersionInfo RtlVerifyVersionInfoFn = nullptr;
if (RtlVerifyVersionInfoFn == nullptr)
if (HMODULE ntdllModule = ::GetModuleHandleA("ntdll.dll"))
RtlVerifyVersionInfoFn = (PFN_RtlVerifyVersionInfo)GetProcAddress(ntdllModule, "RtlVerifyVersionInfo");
if (RtlVerifyVersionInfoFn == nullptr)
return FALSE;
RTL_OSVERSIONINFOEXW versionInfo = { };
ULONGLONG conditionMask = 0;
versionInfo.dwOSVersionInfoSize = sizeof(RTL_OSVERSIONINFOEXW);
versionInfo.dwMajorVersion = major;
versionInfo.dwMinorVersion = minor;
VER_SET_CONDITION(conditionMask, VER_MAJORVERSION, VER_GREATER_EQUAL);
VER_SET_CONDITION(conditionMask, VER_MINORVERSION, VER_GREATER_EQUAL);
return (RtlVerifyVersionInfoFn(&versionInfo, VER_MAJORVERSION | VER_MINORVERSION, conditionMask) == 0) ? TRUE : FALSE;
}
#define _IsWindowsVistaOrGreater() _IsWindowsVersionOrGreater(HIBYTE(0x0600), LOBYTE(0x0600), 0) // _WIN32_WINNT_VISTA
#define _IsWindows8OrGreater() _IsWindowsVersionOrGreater(HIBYTE(0x0602), LOBYTE(0x0602), 0) // _WIN32_WINNT_WIN8
#define _IsWindows8Point1OrGreater() _IsWindowsVersionOrGreater(HIBYTE(0x0603), LOBYTE(0x0603), 0) // _WIN32_WINNT_WINBLUE
#define _IsWindows10OrGreater() _IsWindowsVersionOrGreater(HIBYTE(0x0A00), LOBYTE(0x0A00), 0) // _WIN32_WINNT_WINTHRESHOLD / _WIN32_WINNT_WIN10
#ifndef DPI_ENUMS_DECLARED
typedef enum { PROCESS_DPI_UNAWARE = 0, PROCESS_SYSTEM_DPI_AWARE = 1, PROCESS_PER_MONITOR_DPI_AWARE = 2 } PROCESS_DPI_AWARENESS;
typedef enum { MDT_EFFECTIVE_DPI = 0, MDT_ANGULAR_DPI = 1, MDT_RAW_DPI = 2, MDT_DEFAULT = MDT_EFFECTIVE_DPI } MONITOR_DPI_TYPE;
#endif
#ifndef _DPI_AWARENESS_CONTEXTS_
DECLARE_HANDLE(DPI_AWARENESS_CONTEXT);
#define DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE (DPI_AWARENESS_CONTEXT)-3
#endif
#ifndef DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2
#define DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2 (DPI_AWARENESS_CONTEXT)-4
#endif
typedef HRESULT(WINAPI* PFN_SetProcessDpiAwareness)(PROCESS_DPI_AWARENESS); // Shcore.lib + dll, Windows 8.1+
typedef HRESULT(WINAPI* PFN_GetDpiForMonitor)(HMONITOR, MONITOR_DPI_TYPE, UINT*, UINT*); // Shcore.lib + dll, Windows 8.1+
typedef DPI_AWARENESS_CONTEXT(WINAPI* PFN_SetThreadDpiAwarenessContext)(DPI_AWARENESS_CONTEXT); // User32.lib + dll, Windows 10 v1607+ (Creators Update)
// Helper function to enable DPI awareness without setting up a manifest
void ImGui_ImplWin32_EnableDpiAwareness()
{
if (_IsWindows10OrGreater())
{
static HINSTANCE user32_dll = ::LoadLibraryA("user32.dll"); // Reference counted per-process
if (PFN_SetThreadDpiAwarenessContext SetThreadDpiAwarenessContextFn = (PFN_SetThreadDpiAwarenessContext)::GetProcAddress(user32_dll, "SetThreadDpiAwarenessContext"))
{
SetThreadDpiAwarenessContextFn(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2);
return;
}
}
if (_IsWindows8Point1OrGreater())
{
static HINSTANCE shcore_dll = ::LoadLibraryA("shcore.dll"); // Reference counted per-process
if (PFN_SetProcessDpiAwareness SetProcessDpiAwarenessFn = (PFN_SetProcessDpiAwareness)::GetProcAddress(shcore_dll, "SetProcessDpiAwareness"))
{
SetProcessDpiAwarenessFn(PROCESS_PER_MONITOR_DPI_AWARE);
return;
}
}
#if _WIN32_WINNT >= 0x0600
::SetProcessDPIAware();
#endif
}
#if defined(_MSC_VER) && !defined(NOGDI)
#pragma comment(lib, "gdi32") // Link with gdi32.lib for GetDeviceCaps(). MinGW will require linking with '-lgdi32'
#endif
float ImGui_ImplWin32_GetDpiScaleForMonitor(void* monitor)
{
UINT xdpi = 96, ydpi = 96;
if (_IsWindows8Point1OrGreater())
{
static HINSTANCE shcore_dll = ::LoadLibraryA("shcore.dll"); // Reference counted per-process
static PFN_GetDpiForMonitor GetDpiForMonitorFn = nullptr;
if (GetDpiForMonitorFn == nullptr && shcore_dll != nullptr)
GetDpiForMonitorFn = (PFN_GetDpiForMonitor)::GetProcAddress(shcore_dll, "GetDpiForMonitor");
if (GetDpiForMonitorFn != nullptr)
{
GetDpiForMonitorFn((HMONITOR)monitor, MDT_EFFECTIVE_DPI, &xdpi, &ydpi);
IM_ASSERT(xdpi == ydpi); // Please contact me if you hit this assert!
return xdpi / 96.0f;
}
}
#ifndef NOGDI
const HDC dc = ::GetDC(nullptr);
xdpi = ::GetDeviceCaps(dc, LOGPIXELSX);
ydpi = ::GetDeviceCaps(dc, LOGPIXELSY);
IM_ASSERT(xdpi == ydpi); // Please contact me if you hit this assert!
::ReleaseDC(nullptr, dc);
#endif
return xdpi / 96.0f;
}
float ImGui_ImplWin32_GetDpiScaleForHwnd(void* hwnd)
{
HMONITOR monitor = ::MonitorFromWindow((HWND)hwnd, MONITOR_DEFAULTTONEAREST);
return ImGui_ImplWin32_GetDpiScaleForMonitor(monitor);
}
//---------------------------------------------------------------------------------------------------------
// Transparency related helpers (optional)
//--------------------------------------------------------------------------------------------------------
#if defined(_MSC_VER)
#pragma comment(lib, "dwmapi") // Link with dwmapi.lib. MinGW will require linking with '-ldwmapi'
#endif
// [experimental]
// Borrowed from GLFW's function updateFramebufferTransparency() in src/win32_window.c
// (the Dwm* functions are Vista era functions but we are borrowing logic from GLFW)
void ImGui_ImplWin32_EnableAlphaCompositing(void* hwnd)
{
if (!_IsWindowsVistaOrGreater())
return;
BOOL composition;
if (FAILED(::DwmIsCompositionEnabled(&composition)) || !composition)
return;
BOOL opaque;
DWORD color;
if (_IsWindows8OrGreater() || (SUCCEEDED(::DwmGetColorizationColor(&color, &opaque)) && !opaque))
{
HRGN region = ::CreateRectRgn(0, 0, -1, -1);
DWM_BLURBEHIND bb = {};
bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION;
bb.hRgnBlur = region;
bb.fEnable = TRUE;
::DwmEnableBlurBehindWindow((HWND)hwnd, &bb);
::DeleteObject(region);
}
else
{
DWM_BLURBEHIND bb = {};
bb.dwFlags = DWM_BB_ENABLE;
::DwmEnableBlurBehindWindow((HWND)hwnd, &bb);
}
}
//---------------------------------------------------------------------------------------------------------

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// dear imgui: Platform Backend for Windows (standard windows API for 32-bits AND 64-bits applications)
// This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
// Implemented features:
// [X] Platform: Clipboard support (for Win32 this is actually part of core dear imgui)
// [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy VK_* values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]
// [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
// [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
#pragma once
#include "imgui.h" // IMGUI_IMPL_API
IMGUI_IMPL_API bool ImGui_ImplWin32_Init(void* hwnd);
IMGUI_IMPL_API void ImGui_ImplWin32_Shutdown();
IMGUI_IMPL_API void ImGui_ImplWin32_NewFrame();
// Win32 message handler your application need to call.
// - Intentionally commented out in a '#if 0' block to avoid dragging dependencies on <windows.h> from this helper.
// - You should COPY the line below into your .cpp code to forward declare the function and then you can call it.
// - Call from your application's message handler. Keep calling your message handler unless this function returns TRUE.
#if 0
extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
#endif
// DPI-related helpers (optional)
// - Use to enable DPI awareness without having to create an application manifest.
// - Your own app may already do this via a manifest or explicit calls. This is mostly useful for our examples/ apps.
// - In theory we could call simple functions from Windows SDK such as SetProcessDPIAware(), SetProcessDpiAwareness(), etc.
// but most of the functions provided by Microsoft require Windows 8.1/10+ SDK at compile time and Windows 8/10+ at runtime,
// neither we want to require the user to have. So we dynamically select and load those functions to avoid dependencies.
IMGUI_IMPL_API void ImGui_ImplWin32_EnableDpiAwareness();
IMGUI_IMPL_API float ImGui_ImplWin32_GetDpiScaleForHwnd(void* hwnd); // HWND hwnd
IMGUI_IMPL_API float ImGui_ImplWin32_GetDpiScaleForMonitor(void* monitor); // HMONITOR monitor
// Transparency related helpers (optional) [experimental]
// - Use to enable alpha compositing transparency with the desktop.
// - Use together with e.g. clearing your framebuffer with zero-alpha.
IMGUI_IMPL_API void ImGui_ImplWin32_EnableAlphaCompositing(void* hwnd); // HWND hwnd

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#!/bin/bash
## -V: create SPIR-V binary
## -x: save binary output as text-based 32-bit hexadecimal numbers
## -o: output file
glslangValidator -V -x -o glsl_shader.frag.u32 glsl_shader.frag
glslangValidator -V -x -o glsl_shader.vert.u32 glsl_shader.vert

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#version 450 core
layout(location = 0) out vec4 fColor;
layout(set=0, binding=0) uniform sampler2D sTexture;
layout(location = 0) in struct {
vec4 Color;
vec2 UV;
} In;
void main()
{
fColor = In.Color * texture(sTexture, In.UV.st);
}

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#version 450 core
layout(location = 0) in vec2 aPos;
layout(location = 1) in vec2 aUV;
layout(location = 2) in vec4 aColor;
layout(push_constant) uniform uPushConstant {
vec2 uScale;
vec2 uTranslate;
} pc;
out gl_PerVertex {
vec4 gl_Position;
};
layout(location = 0) out struct {
vec4 Color;
vec2 UV;
} Out;
void main()
{
Out.Color = aColor;
Out.UV = aUV;
gl_Position = vec4(aPos * pc.uScale + pc.uTranslate, 0, 1);
}

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See BACKENDS and EXAMPLES files in the docs/ folder, or on the web at: https://github.com/ocornut/imgui/tree/master/docs
Backends = Helper code to facilitate integration with platforms/graphics api (used by Examples + should be used by your app).
Examples = Standalone applications showcasing integration with platforms/graphics api.
Some Examples have extra README files in their respective directory, please check them too!
Once Dear ImGui is running (in either examples or your own application/game/engine),
run and refer to ImGui::ShowDemoWindow() in imgui_demo.cpp for the end-user API.

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#
# Cross Platform Makefile
# Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X
#
# You will need GLFW (http://www.glfw.org):
# Linux:
# apt-get install libglfw-dev
# Mac OS X:
# brew install glfw
# MSYS2:
# pacman -S --noconfirm --needed mingw-w64-x86_64-toolchain mingw-w64-x86_64-glfw
#
#CXX = g++
#CXX = clang++
EXE = example_glfw_opengl3
IMGUI_DIR = ../..
SOURCES = main.cpp
SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp
SOURCES += $(IMGUI_DIR)/backends/imgui_impl_glfw.cpp $(IMGUI_DIR)/backends/imgui_impl_opengl3.cpp
OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
UNAME_S := $(shell uname -s)
LINUX_GL_LIBS = -lGL
CXXFLAGS = -std=c++11 -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends
CXXFLAGS += -g -Wall -Wformat
LIBS =
##---------------------------------------------------------------------
## OPENGL ES
##---------------------------------------------------------------------
## This assumes a GL ES library available in the system, e.g. libGLESv2.so
# CXXFLAGS += -DIMGUI_IMPL_OPENGL_ES2
# LINUX_GL_LIBS = -lGLESv2
##---------------------------------------------------------------------
## BUILD FLAGS PER PLATFORM
##---------------------------------------------------------------------
ifeq ($(UNAME_S), Linux) #LINUX
ECHO_MESSAGE = "Linux"
LIBS += $(LINUX_GL_LIBS) `pkg-config --static --libs glfw3`
CXXFLAGS += `pkg-config --cflags glfw3`
CFLAGS = $(CXXFLAGS)
endif
ifeq ($(UNAME_S), Darwin) #APPLE
ECHO_MESSAGE = "Mac OS X"
LIBS += -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo
LIBS += -L/usr/local/lib -L/opt/local/lib -L/opt/homebrew/lib
#LIBS += -lglfw3
LIBS += -lglfw
CXXFLAGS += -I/usr/local/include -I/opt/local/include -I/opt/homebrew/include
CFLAGS = $(CXXFLAGS)
endif
ifeq ($(OS), Windows_NT)
ECHO_MESSAGE = "MinGW"
LIBS += -lglfw3 -lgdi32 -lopengl32 -limm32
CXXFLAGS += `pkg-config --cflags glfw3`
CFLAGS = $(CXXFLAGS)
endif
##---------------------------------------------------------------------
## BUILD RULES
##---------------------------------------------------------------------
%.o:%.cpp
$(CXX) $(CXXFLAGS) -c -o $@ $<
%.o:$(IMGUI_DIR)/%.cpp
$(CXX) $(CXXFLAGS) -c -o $@ $<
%.o:$(IMGUI_DIR)/backends/%.cpp
$(CXX) $(CXXFLAGS) -c -o $@ $<
all: $(EXE)
@echo Build complete for $(ECHO_MESSAGE)
$(EXE): $(OBJS)
$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
clean:
rm -f $(EXE) $(OBJS)

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test/capi-tests/imgui/examples/example_glfw_opengl3/build_win32.bat vendored Normal file
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@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
@set OUT_DIR=Debug
@set OUT_EXE=example_glfw_opengl3
@set INCLUDES=/I..\.. /I..\..\backends /I..\libs\glfw\include
@set SOURCES=main.cpp ..\..\backends\imgui_impl_glfw.cpp ..\..\backends\imgui_impl_opengl3.cpp ..\..\imgui*.cpp
@set LIBS=/LIBPATH:..\libs\glfw\lib-vc2010-32 glfw3.lib opengl32.lib gdi32.lib shell32.lib
mkdir %OUT_DIR%
cl /nologo /Zi /MD %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS%

182
test/capi-tests/imgui/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj vendored Normal file
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<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<ProjectConfiguration Include="Debug|Win32">
<Configuration>Debug</Configuration>
<Platform>Win32</Platform>
</ProjectConfiguration>
<ProjectConfiguration Include="Debug|x64">
<Configuration>Debug</Configuration>
<Platform>x64</Platform>
</ProjectConfiguration>
<ProjectConfiguration Include="Release|Win32">
<Configuration>Release</Configuration>
<Platform>Win32</Platform>
</ProjectConfiguration>
<ProjectConfiguration Include="Release|x64">
<Configuration>Release</Configuration>
<Platform>x64</Platform>
</ProjectConfiguration>
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<PropertyGroup Label="Globals">
<ProjectGuid>{4a1fb5ea-22f5-42a8-ab92-1d2df5d47fb9}</ProjectGuid>
<RootNamespace>example_glfw_opengl3</RootNamespace>
<WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
<ConfigurationType>Application</ConfigurationType>
<UseDebugLibraries>true</UseDebugLibraries>
<CharacterSet>MultiByte</CharacterSet>
<PlatformToolset>v143</PlatformToolset>
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<UseDebugLibraries>true</UseDebugLibraries>
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<UseDebugLibraries>false</UseDebugLibraries>
<WholeProgramOptimization>true</WholeProgramOptimization>
<CharacterSet>MultiByte</CharacterSet>
<PlatformToolset>v143</PlatformToolset>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
<ImportGroup Label="ExtensionSettings">
</ImportGroup>
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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<ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<OutDir>$(ProjectDir)$(Configuration)\</OutDir>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
<OutDir>$(ProjectDir)$(Configuration)\</OutDir>
<IntDir>$(ProjectDir)$(Configuration)\</IntDir>
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<OutDir>$(ProjectDir)$(Configuration)\</OutDir>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
<OutDir>$(ProjectDir)$(Configuration)\</OutDir>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<Optimization>Disabled</Optimization>
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</ClCompile>
<Link>
<GenerateDebugInformation>true</GenerateDebugInformation>
<AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
<AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
<SubSystem>Console</SubSystem>
<IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
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<Link>
<GenerateDebugInformation>true</GenerateDebugInformation>
<AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
<AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
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<ClCompile>
<WarningLevel>Level4</WarningLevel>
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<IntrinsicFunctions>true</IntrinsicFunctions>
<AdditionalIncludeDirectories>..\..;..\..\backends;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<BufferSecurityCheck>false</BufferSecurityCheck>
</ClCompile>
<Link>
<GenerateDebugInformation>true</GenerateDebugInformation>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<OptimizeReferences>true</OptimizeReferences>
<AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
<AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
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<SubSystem>Console</SubSystem>
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<ClCompile Include="..\..\imgui_demo.cpp" />
<ClCompile Include="..\..\imgui_draw.cpp" />
<ClCompile Include="..\..\imgui_tables.cpp" />
<ClCompile Include="..\..\imgui_widgets.cpp" />
<ClCompile Include="..\..\backends\imgui_impl_glfw.cpp" />
<ClCompile Include="..\..\backends\imgui_impl_opengl3.cpp" />
<ClCompile Include="main.cpp" />
</ItemGroup>
<ItemGroup>
<ClInclude Include="..\..\imconfig.h" />
<ClInclude Include="..\..\imgui.h" />
<ClInclude Include="..\..\imgui_internal.h" />
<ClInclude Include="..\..\backends\imgui_impl_glfw.h" />
<ClInclude Include="..\..\backends\imgui_impl_opengl3.h" />
<ClInclude Include="..\..\backends\imgui_impl_opengl3_loader.h" />
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<ItemGroup>
<None Include="..\..\misc\debuggers\imgui.natvis" />
<None Include="..\README.txt" />
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">
</ImportGroup>
</Project>

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test/capi-tests/imgui/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters vendored Normal file
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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup>
<Filter Include="imgui">
<UniqueIdentifier>{20b90ce4-7fcb-4731-b9a0-075f875de82d}</UniqueIdentifier>
</Filter>
<Filter Include="sources">
<UniqueIdentifier>{f18ab499-84e1-499f-8eff-9754361e0e52}</UniqueIdentifier>
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<ClCompile Include="main.cpp">
<Filter>sources</Filter>
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<ClCompile Include="..\..\imgui.cpp">
<Filter>imgui</Filter>
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<Filter>imgui</Filter>
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<ClCompile Include="..\..\imgui_draw.cpp">
<Filter>imgui</Filter>
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<ClCompile Include="..\..\imgui_tables.cpp">
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</Project>

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test/capi-tests/imgui/examples/example_glfw_opengl3/main.cpp vendored Normal file
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// Dear ImGui: standalone example application for GLFW + OpenGL 3, using programmable pipeline
// (GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
#include "imgui.h"
#include "imgui_impl_glfw.h"
#include "imgui_impl_opengl3.h"
#include <stdio.h>
#define GL_SILENCE_DEPRECATION
#if defined(IMGUI_IMPL_OPENGL_ES2)
#include <GLES2/gl2.h>
#endif
#include <GLFW/glfw3.h> // Will drag system OpenGL headers
// [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers.
// To link with VS2010-era libraries, VS2015+ requires linking with legacy_stdio_definitions.lib, which we do using this pragma.
// Your own project should not be affected, as you are likely to link with a newer binary of GLFW that is adequate for your version of Visual Studio.
#if defined(_MSC_VER) && (_MSC_VER >= 1900) && !defined(IMGUI_DISABLE_WIN32_FUNCTIONS)
#pragma comment(lib, "legacy_stdio_definitions")
#endif
static void glfw_error_callback(int error, const char* description)
{
fprintf(stderr, "Glfw Error %d: %s\n", error, description);
}
int main(int, char**)
{
// Setup window
glfwSetErrorCallback(glfw_error_callback);
if (!glfwInit())
return 1;
// Decide GL+GLSL versions
#if defined(IMGUI_IMPL_OPENGL_ES2)
// GL ES 2.0 + GLSL 100
const char* glsl_version = "#version 100";
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
#elif defined(__APPLE__)
// GL 3.2 + GLSL 150
const char* glsl_version = "#version 150";
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); // 3.2+ only
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // Required on Mac
#else
// GL 3.0 + GLSL 130
const char* glsl_version = "#version 130";
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
//glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); // 3.2+ only
//glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // 3.0+ only
#endif
// Create window with graphics context
GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+OpenGL3 example", NULL, NULL);
if (window == NULL)
return 1;
glfwMakeContextCurrent(window);
glfwSwapInterval(1); // Enable vsync
// Setup Dear ImGui context
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
// Setup Dear ImGui style
ImGui::StyleColorsDark();
//ImGui::StyleColorsLight();
// Setup Platform/Renderer backends
ImGui_ImplGlfw_InitForOpenGL(window, true);
ImGui_ImplOpenGL3_Init(glsl_version);
// Load Fonts
// - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use Freetype for higher quality font rendering.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf", 18.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
// Our state
bool show_demo_window = true;
bool show_another_window = false;
ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
// Main loop
while (!glfwWindowShouldClose(window))
{
// Poll and handle events (inputs, window resize, etc.)
// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
glfwPollEvents();
// Start the Dear ImGui frame
ImGui_ImplOpenGL3_NewFrame();
ImGui_ImplGlfw_NewFrame();
ImGui::NewFrame();
// 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
if (show_demo_window)
ImGui::ShowDemoWindow(&show_demo_window);
// 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
{
static float f = 0.0f;
static int counter = 0;
ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
ImGui::Checkbox("Another Window", &show_another_window);
ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
counter++;
ImGui::SameLine();
ImGui::Text("counter = %d", counter);
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
ImGui::End();
}
// 3. Show another simple window.
if (show_another_window)
{
ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
ImGui::Text("Hello from another window!");
if (ImGui::Button("Close Me"))
show_another_window = false;
ImGui::End();
}
// Rendering
ImGui::Render();
int display_w, display_h;
glfwGetFramebufferSize(window, &display_w, &display_h);
glViewport(0, 0, display_w, display_h);
glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
glClear(GL_COLOR_BUFFER_BIT);
ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
glfwSwapBuffers(window);
}
// Cleanup
ImGui_ImplOpenGL3_Shutdown();
ImGui_ImplGlfw_Shutdown();
ImGui::DestroyContext();
glfwDestroyWindow(window);
glfwTerminate();
return 0;
}

45
test/capi-tests/imgui/examples/example_glfw_vulkan/CMakeLists.txt vendored Normal file
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# Example usage:
# mkdir build
# cd build
# cmake -g "Visual Studio 14 2015" ..
cmake_minimum_required(VERSION 2.8)
project(imgui_example_glfw_vulkan C CXX)
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Debug CACHE STRING "" FORCE)
endif()
set(CMAKE_CXX_STANDARD 11)
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DVK_PROTOTYPES")
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DVK_PROTOTYPES")
# GLFW
set(GLFW_DIR ../../../glfw) # Set this to point to an up-to-date GLFW repo
option(GLFW_BUILD_EXAMPLES "Build the GLFW example programs" OFF)
option(GLFW_BUILD_TESTS "Build the GLFW test programs" OFF)
option(GLFW_BUILD_DOCS "Build the GLFW documentation" OFF)
option(GLFW_INSTALL "Generate installation target" OFF)
option(GLFW_DOCUMENT_INTERNALS "Include internals in documentation" OFF)
add_subdirectory(${GLFW_DIR} binary_dir EXCLUDE_FROM_ALL)
include_directories(${GLFW_DIR}/include)
# Dear ImGui
set(IMGUI_DIR ../../)
include_directories(${IMGUI_DIR} ${IMGUI_DIR}/backends ..)
# Libraries
find_package(Vulkan REQUIRED)
#find_library(VULKAN_LIBRARY
#NAMES vulkan vulkan-1)
#set(LIBRARIES "glfw;${VULKAN_LIBRARY}")
set(LIBRARIES "glfw;Vulkan::Vulkan")
# Use vulkan headers from glfw:
include_directories(${GLFW_DIR}/deps)
file(GLOB sources *.cpp)
add_executable(example_glfw_vulkan ${sources} ${IMGUI_DIR}/backends/imgui_impl_glfw.cpp ${IMGUI_DIR}/backends/imgui_impl_vulkan.cpp ${IMGUI_DIR}/imgui.cpp ${IMGUI_DIR}/imgui_draw.cpp ${IMGUI_DIR}/imgui_demo.cpp ${IMGUI_DIR}/imgui_tables.cpp ${IMGUI_DIR}/imgui_widgets.cpp)
target_link_libraries(example_glfw_vulkan ${LIBRARIES})
target_compile_definitions(example_glfw_vulkan PUBLIC -DImTextureID=ImU64)

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test/capi-tests/imgui/examples/example_glfw_vulkan/build_win32.bat vendored Normal file
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@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
@set OUT_EXE=example_glfw_vulkan
@set INCLUDES=/I..\.. /I..\..\backends /I..\libs\glfw\include /I %VULKAN_SDK%\include
@set SOURCES=main.cpp ..\..\backends\imgui_impl_vulkan.cpp ..\..\backends\imgui_impl_glfw.cpp ..\..\imgui*.cpp
@set LIBS=/LIBPATH:..\libs\glfw\lib-vc2010-32 /libpath:%VULKAN_SDK%\lib32 glfw3.lib opengl32.lib gdi32.lib shell32.lib vulkan-1.lib
@set OUT_DIR=Debug
mkdir %OUT_DIR%
cl /nologo /Zi /MD %INCLUDES% /D ImTextureID=ImU64 %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS%
@set OUT_DIR=Release
mkdir %OUT_DIR%
cl /nologo /Zi /MD /Ox /Oi %INCLUDES% /D ImTextureID=ImU64 %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS%

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test/capi-tests/imgui/examples/example_glfw_vulkan/build_win64.bat vendored Normal file
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@REM Build for Visual Studio compiler. Run your copy of amd64/vcvars32.bat to setup 64-bit command-line compiler.
@set INCLUDES=/I..\.. /I..\..\backends /I..\libs\glfw\include /I %VULKAN_SDK%\include
@set SOURCES=main.cpp ..\..\backends\imgui_impl_vulkan.cpp ..\..\backends\imgui_impl_glfw.cpp ..\..\imgui*.cpp
@set LIBS=/LIBPATH:..\libs\glfw\lib-vc2010-64 /libpath:%VULKAN_SDK%\lib glfw3.lib opengl32.lib gdi32.lib shell32.lib vulkan-1.lib
@set OUT_DIR=Debug
mkdir %OUT_DIR%
cl /nologo /Zi /MD %INCLUDES% /D ImTextureID=ImU64 %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS%
@set OUT_DIR=Release
mkdir %OUT_DIR%
cl /nologo /Zi /MD /Ox /Oi %INCLUDES% /D ImTextureID=ImU64 %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS%

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// Dear ImGui: standalone example application for Glfw + Vulkan
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
// Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
// - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
// You will use those if you want to use this rendering backend in your engine/app.
// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
// the backend itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
// Read comments in imgui_impl_vulkan.h.
#include "imgui.h"
#include "imgui_impl_glfw.h"
#include "imgui_impl_vulkan.h"
#include <stdio.h> // printf, fprintf
#include <stdlib.h> // abort
#define GLFW_INCLUDE_NONE
#define GLFW_INCLUDE_VULKAN
#include <GLFW/glfw3.h>
#include <vulkan/vulkan.h>
// [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers.
// To link with VS2010-era libraries, VS2015+ requires linking with legacy_stdio_definitions.lib, which we do using this pragma.
// Your own project should not be affected, as you are likely to link with a newer binary of GLFW that is adequate for your version of Visual Studio.
#if defined(_MSC_VER) && (_MSC_VER >= 1900) && !defined(IMGUI_DISABLE_WIN32_FUNCTIONS)
#pragma comment(lib, "legacy_stdio_definitions")
#endif
//#define IMGUI_UNLIMITED_FRAME_RATE
#ifdef _DEBUG
#define IMGUI_VULKAN_DEBUG_REPORT
#endif
static VkAllocationCallbacks* g_Allocator = NULL;
static VkInstance g_Instance = VK_NULL_HANDLE;
static VkPhysicalDevice g_PhysicalDevice = VK_NULL_HANDLE;
static VkDevice g_Device = VK_NULL_HANDLE;
static uint32_t g_QueueFamily = (uint32_t)-1;
static VkQueue g_Queue = VK_NULL_HANDLE;
static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE;
static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE;
static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE;
static ImGui_ImplVulkanH_Window g_MainWindowData;
static int g_MinImageCount = 2;
static bool g_SwapChainRebuild = false;
static void check_vk_result(VkResult err)
{
if (err == 0)
return;
fprintf(stderr, "[vulkan] Error: VkResult = %d\n", err);
if (err < 0)
abort();
}
#ifdef IMGUI_VULKAN_DEBUG_REPORT
static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData)
{
(void)flags; (void)object; (void)location; (void)messageCode; (void)pUserData; (void)pLayerPrefix; // Unused arguments
fprintf(stderr, "[vulkan] Debug report from ObjectType: %i\nMessage: %s\n\n", objectType, pMessage);
return VK_FALSE;
}
#endif // IMGUI_VULKAN_DEBUG_REPORT
static void SetupVulkan(const char** extensions, uint32_t extensions_count)
{
VkResult err;
// Create Vulkan Instance
{
VkInstanceCreateInfo create_info = {};
create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
create_info.enabledExtensionCount = extensions_count;
create_info.ppEnabledExtensionNames = extensions;
#ifdef IMGUI_VULKAN_DEBUG_REPORT
// Enabling validation layers
const char* layers[] = { "VK_LAYER_KHRONOS_validation" };
create_info.enabledLayerCount = 1;
create_info.ppEnabledLayerNames = layers;
// Enable debug report extension (we need additional storage, so we duplicate the user array to add our new extension to it)
const char** extensions_ext = (const char**)malloc(sizeof(const char*) * (extensions_count + 1));
memcpy(extensions_ext, extensions, extensions_count * sizeof(const char*));
extensions_ext[extensions_count] = "VK_EXT_debug_report";
create_info.enabledExtensionCount = extensions_count + 1;
create_info.ppEnabledExtensionNames = extensions_ext;
// Create Vulkan Instance
err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
check_vk_result(err);
free(extensions_ext);
// Get the function pointer (required for any extensions)
auto vkCreateDebugReportCallbackEXT = (PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkCreateDebugReportCallbackEXT");
IM_ASSERT(vkCreateDebugReportCallbackEXT != NULL);
// Setup the debug report callback
VkDebugReportCallbackCreateInfoEXT debug_report_ci = {};
debug_report_ci.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT;
debug_report_ci.flags = VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT | VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT;
debug_report_ci.pfnCallback = debug_report;
debug_report_ci.pUserData = NULL;
err = vkCreateDebugReportCallbackEXT(g_Instance, &debug_report_ci, g_Allocator, &g_DebugReport);
check_vk_result(err);
#else
// Create Vulkan Instance without any debug feature
err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
check_vk_result(err);
IM_UNUSED(g_DebugReport);
#endif
}
// Select GPU
{
uint32_t gpu_count;
err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, NULL);
check_vk_result(err);
IM_ASSERT(gpu_count > 0);
VkPhysicalDevice* gpus = (VkPhysicalDevice*)malloc(sizeof(VkPhysicalDevice) * gpu_count);
err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, gpus);
check_vk_result(err);
// If a number >1 of GPUs got reported, find discrete GPU if present, or use first one available. This covers
// most common cases (multi-gpu/integrated+dedicated graphics). Handling more complicated setups (multiple
// dedicated GPUs) is out of scope of this sample.
int use_gpu = 0;
for (int i = 0; i < (int)gpu_count; i++)
{
VkPhysicalDeviceProperties properties;
vkGetPhysicalDeviceProperties(gpus[i], &properties);
if (properties.deviceType == VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU)
{
use_gpu = i;
break;
}
}
g_PhysicalDevice = gpus[use_gpu];
free(gpus);
}
// Select graphics queue family
{
uint32_t count;
vkGetPhysicalDeviceQueueFamilyProperties(g_PhysicalDevice, &count, NULL);
VkQueueFamilyProperties* queues = (VkQueueFamilyProperties*)malloc(sizeof(VkQueueFamilyProperties) * count);
vkGetPhysicalDeviceQueueFamilyProperties(g_PhysicalDevice, &count, queues);
for (uint32_t i = 0; i < count; i++)
if (queues[i].queueFlags & VK_QUEUE_GRAPHICS_BIT)
{
g_QueueFamily = i;
break;
}
free(queues);
IM_ASSERT(g_QueueFamily != (uint32_t)-1);
}
// Create Logical Device (with 1 queue)
{
int device_extension_count = 1;
const char* device_extensions[] = { "VK_KHR_swapchain" };
const float queue_priority[] = { 1.0f };
VkDeviceQueueCreateInfo queue_info[1] = {};
queue_info[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
queue_info[0].queueFamilyIndex = g_QueueFamily;
queue_info[0].queueCount = 1;
queue_info[0].pQueuePriorities = queue_priority;
VkDeviceCreateInfo create_info = {};
create_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
create_info.queueCreateInfoCount = sizeof(queue_info) / sizeof(queue_info[0]);
create_info.pQueueCreateInfos = queue_info;
create_info.enabledExtensionCount = device_extension_count;
create_info.ppEnabledExtensionNames = device_extensions;
err = vkCreateDevice(g_PhysicalDevice, &create_info, g_Allocator, &g_Device);
check_vk_result(err);
vkGetDeviceQueue(g_Device, g_QueueFamily, 0, &g_Queue);
}
// Create Descriptor Pool
{
VkDescriptorPoolSize pool_sizes[] =
{
{ VK_DESCRIPTOR_TYPE_SAMPLER, 1000 },
{ VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1000 },
{ VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 1000 },
{ VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1000 },
{ VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER, 1000 },
{ VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER, 1000 },
{ VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1000 },
{ VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1000 },
{ VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, 1000 },
{ VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC, 1000 },
{ VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, 1000 }
};
VkDescriptorPoolCreateInfo pool_info = {};
pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
pool_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
pool_info.maxSets = 1000 * IM_ARRAYSIZE(pool_sizes);
pool_info.poolSizeCount = (uint32_t)IM_ARRAYSIZE(pool_sizes);
pool_info.pPoolSizes = pool_sizes;
err = vkCreateDescriptorPool(g_Device, &pool_info, g_Allocator, &g_DescriptorPool);
check_vk_result(err);
}
}
// All the ImGui_ImplVulkanH_XXX structures/functions are optional helpers used by the demo.
// Your real engine/app may not use them.
static void SetupVulkanWindow(ImGui_ImplVulkanH_Window* wd, VkSurfaceKHR surface, int width, int height)
{
wd->Surface = surface;
// Check for WSI support
VkBool32 res;
vkGetPhysicalDeviceSurfaceSupportKHR(g_PhysicalDevice, g_QueueFamily, wd->Surface, &res);
if (res != VK_TRUE)
{
fprintf(stderr, "Error no WSI support on physical device 0\n");
exit(-1);
}
// Select Surface Format
const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
// Select Present Mode
#ifdef IMGUI_UNLIMITED_FRAME_RATE
VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR, VK_PRESENT_MODE_FIFO_KHR };
#else
VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_FIFO_KHR };
#endif
wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_modes[0], IM_ARRAYSIZE(present_modes));
//printf("[vulkan] Selected PresentMode = %d\n", wd->PresentMode);
// Create SwapChain, RenderPass, Framebuffer, etc.
IM_ASSERT(g_MinImageCount >= 2);
ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, wd, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
}
static void CleanupVulkan()
{
vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
#ifdef IMGUI_VULKAN_DEBUG_REPORT
// Remove the debug report callback
auto vkDestroyDebugReportCallbackEXT = (PFN_vkDestroyDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkDestroyDebugReportCallbackEXT");
vkDestroyDebugReportCallbackEXT(g_Instance, g_DebugReport, g_Allocator);
#endif // IMGUI_VULKAN_DEBUG_REPORT
vkDestroyDevice(g_Device, g_Allocator);
vkDestroyInstance(g_Instance, g_Allocator);
}
static void CleanupVulkanWindow()
{
ImGui_ImplVulkanH_DestroyWindow(g_Instance, g_Device, &g_MainWindowData, g_Allocator);
}
static void FrameRender(ImGui_ImplVulkanH_Window* wd, ImDrawData* draw_data)
{
VkResult err;
VkSemaphore image_acquired_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].ImageAcquiredSemaphore;
VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
err = vkAcquireNextImageKHR(g_Device, wd->Swapchain, UINT64_MAX, image_acquired_semaphore, VK_NULL_HANDLE, &wd->FrameIndex);
if (err == VK_ERROR_OUT_OF_DATE_KHR || err == VK_SUBOPTIMAL_KHR)
{
g_SwapChainRebuild = true;
return;
}
check_vk_result(err);
ImGui_ImplVulkanH_Frame* fd = &wd->Frames[wd->FrameIndex];
{
err = vkWaitForFences(g_Device, 1, &fd->Fence, VK_TRUE, UINT64_MAX); // wait indefinitely instead of periodically checking
check_vk_result(err);
err = vkResetFences(g_Device, 1, &fd->Fence);
check_vk_result(err);
}
{
err = vkResetCommandPool(g_Device, fd->CommandPool, 0);
check_vk_result(err);
VkCommandBufferBeginInfo info = {};
info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
err = vkBeginCommandBuffer(fd->CommandBuffer, &info);
check_vk_result(err);
}
{
VkRenderPassBeginInfo info = {};
info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
info.renderPass = wd->RenderPass;
info.framebuffer = fd->Framebuffer;
info.renderArea.extent.width = wd->Width;
info.renderArea.extent.height = wd->Height;
info.clearValueCount = 1;
info.pClearValues = &wd->ClearValue;
vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE);
}
// Record dear imgui primitives into command buffer
ImGui_ImplVulkan_RenderDrawData(draw_data, fd->CommandBuffer);
// Submit command buffer
vkCmdEndRenderPass(fd->CommandBuffer);
{
VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
VkSubmitInfo info = {};
info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
info.waitSemaphoreCount = 1;
info.pWaitSemaphores = &image_acquired_semaphore;
info.pWaitDstStageMask = &wait_stage;
info.commandBufferCount = 1;
info.pCommandBuffers = &fd->CommandBuffer;
info.signalSemaphoreCount = 1;
info.pSignalSemaphores = &render_complete_semaphore;
err = vkEndCommandBuffer(fd->CommandBuffer);
check_vk_result(err);
err = vkQueueSubmit(g_Queue, 1, &info, fd->Fence);
check_vk_result(err);
}
}
static void FramePresent(ImGui_ImplVulkanH_Window* wd)
{
if (g_SwapChainRebuild)
return;
VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
VkPresentInfoKHR info = {};
info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
info.waitSemaphoreCount = 1;
info.pWaitSemaphores = &render_complete_semaphore;
info.swapchainCount = 1;
info.pSwapchains = &wd->Swapchain;
info.pImageIndices = &wd->FrameIndex;
VkResult err = vkQueuePresentKHR(g_Queue, &info);
if (err == VK_ERROR_OUT_OF_DATE_KHR || err == VK_SUBOPTIMAL_KHR)
{
g_SwapChainRebuild = true;
return;
}
check_vk_result(err);
wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->ImageCount; // Now we can use the next set of semaphores
}
static void glfw_error_callback(int error, const char* description)
{
fprintf(stderr, "Glfw Error %d: %s\n", error, description);
}
int main(int, char**)
{
// Setup GLFW window
glfwSetErrorCallback(glfw_error_callback);
if (!glfwInit())
return 1;
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+Vulkan example", NULL, NULL);
// Setup Vulkan
if (!glfwVulkanSupported())
{
printf("GLFW: Vulkan Not Supported\n");
return 1;
}
uint32_t extensions_count = 0;
const char** extensions = glfwGetRequiredInstanceExtensions(&extensions_count);
SetupVulkan(extensions, extensions_count);
// Create Window Surface
VkSurfaceKHR surface;
VkResult err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &surface);
check_vk_result(err);
// Create Framebuffers
int w, h;
glfwGetFramebufferSize(window, &w, &h);
ImGui_ImplVulkanH_Window* wd = &g_MainWindowData;
SetupVulkanWindow(wd, surface, w, h);
// Setup Dear ImGui context
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
// Setup Dear ImGui style
ImGui::StyleColorsDark();
//ImGui::StyleColorsLight();
// Setup Platform/Renderer backends
ImGui_ImplGlfw_InitForVulkan(window, true);
ImGui_ImplVulkan_InitInfo init_info = {};
init_info.Instance = g_Instance;
init_info.PhysicalDevice = g_PhysicalDevice;
init_info.Device = g_Device;
init_info.QueueFamily = g_QueueFamily;
init_info.Queue = g_Queue;
init_info.PipelineCache = g_PipelineCache;
init_info.DescriptorPool = g_DescriptorPool;
init_info.Subpass = 0;
init_info.MinImageCount = g_MinImageCount;
init_info.ImageCount = wd->ImageCount;
init_info.MSAASamples = VK_SAMPLE_COUNT_1_BIT;
init_info.Allocator = g_Allocator;
init_info.CheckVkResultFn = check_vk_result;
ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
// Load Fonts
// - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use Freetype for higher quality font rendering.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf", 18.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
// Upload Fonts
{
// Use any command queue
VkCommandPool command_pool = wd->Frames[wd->FrameIndex].CommandPool;
VkCommandBuffer command_buffer = wd->Frames[wd->FrameIndex].CommandBuffer;
err = vkResetCommandPool(g_Device, command_pool, 0);
check_vk_result(err);
VkCommandBufferBeginInfo begin_info = {};
begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
begin_info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
err = vkBeginCommandBuffer(command_buffer, &begin_info);
check_vk_result(err);
ImGui_ImplVulkan_CreateFontsTexture(command_buffer);
VkSubmitInfo end_info = {};
end_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
end_info.commandBufferCount = 1;
end_info.pCommandBuffers = &command_buffer;
err = vkEndCommandBuffer(command_buffer);
check_vk_result(err);
err = vkQueueSubmit(g_Queue, 1, &end_info, VK_NULL_HANDLE);
check_vk_result(err);
err = vkDeviceWaitIdle(g_Device);
check_vk_result(err);
ImGui_ImplVulkan_DestroyFontUploadObjects();
}
// Our state
bool show_demo_window = true;
bool show_another_window = false;
ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
// Main loop
while (!glfwWindowShouldClose(window))
{
// Poll and handle events (inputs, window resize, etc.)
// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
glfwPollEvents();
// Resize swap chain?
if (g_SwapChainRebuild)
{
int width, height;
glfwGetFramebufferSize(window, &width, &height);
if (width > 0 && height > 0)
{
ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
g_MainWindowData.FrameIndex = 0;
g_SwapChainRebuild = false;
}
}
// Start the Dear ImGui frame
ImGui_ImplVulkan_NewFrame();
ImGui_ImplGlfw_NewFrame();
ImGui::NewFrame();
// 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
if (show_demo_window)
ImGui::ShowDemoWindow(&show_demo_window);
// 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
{
static float f = 0.0f;
static int counter = 0;
ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
ImGui::Checkbox("Another Window", &show_another_window);
ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
counter++;
ImGui::SameLine();
ImGui::Text("counter = %d", counter);
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
ImGui::End();
}
// 3. Show another simple window.
if (show_another_window)
{
ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
ImGui::Text("Hello from another window!");
if (ImGui::Button("Close Me"))
show_another_window = false;
ImGui::End();
}
// Rendering
ImGui::Render();
ImDrawData* draw_data = ImGui::GetDrawData();
const bool is_minimized = (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f);
if (!is_minimized)
{
wd->ClearValue.color.float32[0] = clear_color.x * clear_color.w;
wd->ClearValue.color.float32[1] = clear_color.y * clear_color.w;
wd->ClearValue.color.float32[2] = clear_color.z * clear_color.w;
wd->ClearValue.color.float32[3] = clear_color.w;
FrameRender(wd, draw_data);
FramePresent(wd);
}
}
// Cleanup
err = vkDeviceWaitIdle(g_Device);
check_vk_result(err);
ImGui_ImplVulkan_Shutdown();
ImGui_ImplGlfw_Shutdown();
ImGui::DestroyContext();
CleanupVulkanWindow();
CleanupVulkan();
glfwDestroyWindow(window);
glfwTerminate();
return 0;
}

9
test/capi-tests/imgui/examples/example_win32_directx11/build_win32.bat vendored Normal file
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@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
@set OUT_DIR=Debug
@set OUT_EXE=example_win32_directx11
@set INCLUDES=/I..\.. /I..\..\backends /I "%WindowsSdkDir%Include\um" /I "%WindowsSdkDir%Include\shared" /I "%DXSDK_DIR%Include"
@set SOURCES=main.cpp ..\..\backends\imgui_impl_dx11.cpp ..\..\backends\imgui_impl_win32.cpp ..\..\imgui*.cpp
@set LIBS=/LIBPATH:"%DXSDK_DIR%/Lib/x86" d3d11.lib d3dcompiler.lib
mkdir %OUT_DIR%
cl /nologo /Zi /MD %INCLUDES% /D UNICODE /D _UNICODE %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS%

175
test/capi-tests/imgui/examples/example_win32_directx11/example_win32_directx11.vcxproj vendored Normal file
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<Platform>Win32</Platform>
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<ProjectConfiguration Include="Release|x64">
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<PropertyGroup Label="Globals">
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<RootNamespace>example_win32_directx11</RootNamespace>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
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69
test/capi-tests/imgui/examples/example_win32_directx11/example_win32_directx11.vcxproj.filters vendored Normal file
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test/capi-tests/imgui/examples/example_win32_directx11/main.cpp vendored Normal file
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// Dear ImGui: standalone example application for DirectX 11
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
#include "imgui.h"
#include "imgui_impl_win32.h"
#include "imgui_impl_dx11.h"
#define LIBRA_RUNTIME_D3D11
#include "librashader_ld.h"
#include <d3d11.h>
#include <tchar.h>
// Data
static ID3D11Device* g_pd3dDevice = NULL;
static ID3D11DeviceContext* g_pd3dDeviceContext = NULL;
static IDXGISwapChain* g_pSwapChain = NULL;
static ID3D11RenderTargetView* g_mainRenderTargetView = NULL;
static ID3D11Texture2D* g_pBackBuffer = NULL;
static ID3D11Texture2D* g_pFramebufferCopy = NULL;
static ID3D11ShaderResourceView* g_framebufferCopySRV = NULL;
// Forward declarations of helper functions
bool CreateDeviceD3D(HWND hWnd);
void CleanupDeviceD3D();
void CreateRenderTarget();
void CleanupRenderTarget();
LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
// Main code
int main(int, char**)
{
// Create application window
//ImGui_ImplWin32_EnableDpiAwareness();
WNDCLASSEXW wc = { sizeof(wc), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, L"ImGui Example", NULL };
::RegisterClassExW(&wc);
HWND hwnd = ::CreateWindowW(wc.lpszClassName, L"Dear ImGui DirectX11 Example", WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
// Initialize Direct3D
if (!CreateDeviceD3D(hwnd))
{
CleanupDeviceD3D();
::UnregisterClassW(wc.lpszClassName, wc.hInstance);
return 1;
}
// Show the window
::ShowWindow(hwnd, SW_SHOWDEFAULT);
::UpdateWindow(hwnd);
// Setup Dear ImGui context
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
// Setup Dear ImGui style
ImGui::StyleColorsDark();
//ImGui::StyleColorsLight();
// Setup Platform/Renderer backends
ImGui_ImplWin32_Init(hwnd);
ImGui_ImplDX11_Init(g_pd3dDevice, g_pd3dDeviceContext);
auto libra = librashader_load_instance();
libra_shader_preset_t preset;
auto error = libra.preset_create(
"../../../../../../slang-shaders/crt/crt-lottes.slangp", &preset);
libra_d3d11_filter_chain_t filter_chain;
filter_chain_d3d11_opt_t opt = {
.use_deferred_context = true,
.force_no_mipmaps = false,
};
libra.d3d11_filter_chain_create(&preset, &opt, g_pd3dDevice, &filter_chain);
// Load Fonts
// - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use Freetype for higher quality font rendering.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf", 18.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
// Our state
bool show_demo_window = true;
bool show_another_window = false;
ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
// Main loop
bool done = false;
size_t frameCount = 0;
while (!done)
{
// Poll and handle messages (inputs, window resize, etc.)
// See the WndProc() function below for our to dispatch events to the Win32 backend.
MSG msg;
while (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
{
::TranslateMessage(&msg);
::DispatchMessage(&msg);
if (msg.message == WM_QUIT)
done = true;
}
if (done)
break;
// Start the Dear ImGui frame
ImGui_ImplDX11_NewFrame();
ImGui_ImplWin32_NewFrame();
ImGui::NewFrame();
// 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
if (show_demo_window)
ImGui::ShowDemoWindow(&show_demo_window);
// 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
{
static float f = 0.0f;
static int counter = 0;
ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
ImGui::Checkbox("Another Window", &show_another_window);
ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
counter++;
ImGui::SameLine();
ImGui::Text("counter = %d", counter);
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
ImGui::End();
}
// 3. Show another simple window.
if (show_another_window)
{
ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
ImGui::Text("Hello from another window!");
if (ImGui::Button("Close Me"))
show_another_window = false;
ImGui::End();
}
// Rendering
ImGui::Render();
const float clear_color_with_alpha[4] = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);
g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, clear_color_with_alpha);
ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
g_pd3dDeviceContext->CopyResource(g_pFramebufferCopy, g_pBackBuffer);
D3D11_TEXTURE2D_DESC framebufferTextureDesc;
g_pFramebufferCopy->GetDesc(&framebufferTextureDesc);
libra_source_image_d3d11_t input = {g_framebufferCopySRV,
framebufferTextureDesc.Width,
framebufferTextureDesc.Height};
libra_viewport_t vp = {
0,
0,
framebufferTextureDesc.Width,
framebufferTextureDesc.Height,
};
frame_d3d11_opt_t frame_opt = {.clear_history = false,
.frame_direction = -1};
libra.d3d11_filter_chain_frame(&filter_chain, frameCount, input, vp,
g_mainRenderTargetView, NULL, &frame_opt);
g_pSwapChain->Present(1, 0); // Present with vsync
//g_pSwapChain->Present(0, 0); // Present without vsync
frameCount += 1;
}
// Cleanup
ImGui_ImplDX11_Shutdown();
ImGui_ImplWin32_Shutdown();
ImGui::DestroyContext();
CleanupDeviceD3D();
::DestroyWindow(hwnd);
::UnregisterClassW(wc.lpszClassName, wc.hInstance);
return 0;
}
// Helper functions
bool CreateDeviceD3D(HWND hWnd)
{
// Setup swap chain
DXGI_SWAP_CHAIN_DESC sd;
ZeroMemory(&sd, sizeof(sd));
sd.BufferCount = 2;
sd.BufferDesc.Width = 0;
sd.BufferDesc.Height = 0;
sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
sd.BufferDesc.RefreshRate.Numerator = 60;
sd.BufferDesc.RefreshRate.Denominator = 1;
sd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
sd.OutputWindow = hWnd;
sd.SampleDesc.Count = 1;
sd.SampleDesc.Quality = 0;
sd.Windowed = TRUE;
sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
UINT createDeviceFlags = 0;
createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
D3D_FEATURE_LEVEL featureLevel;
const D3D_FEATURE_LEVEL featureLevelArray[2] = { D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_0, };
HRESULT res = D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 2, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext);
if (res == DXGI_ERROR_UNSUPPORTED) // Try high-performance WARP software driver if hardware is not available.
res = D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_WARP, NULL, createDeviceFlags, featureLevelArray, 2, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext);
if (res != S_OK)
return false;
CreateRenderTarget();
return true;
}
void CleanupDeviceD3D()
{
CleanupRenderTarget();
if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = NULL; }
if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
}
void CreateRenderTarget()
{
g_pSwapChain->GetBuffer(0, IID_PPV_ARGS(&g_pBackBuffer));
g_pd3dDevice->CreateRenderTargetView(g_pBackBuffer, NULL, &g_mainRenderTargetView);
D3D11_TEXTURE2D_DESC framebufferTextureDesc;
g_pBackBuffer->GetDesc(&framebufferTextureDesc);
framebufferTextureDesc.BindFlags |= D3D11_BIND_SHADER_RESOURCE;
g_pd3dDevice->CreateTexture2D(&framebufferTextureDesc, NULL,
&g_pFramebufferCopy);
g_pd3dDevice->CreateShaderResourceView(g_pFramebufferCopy, NULL,
&g_framebufferCopySRV);
assert(g_pFramebufferCopy != NULL);
}
void CleanupRenderTarget() {
if (g_mainRenderTargetView) {
g_mainRenderTargetView->Release();
g_mainRenderTargetView = NULL;
}
if (g_pBackBuffer) {
g_pBackBuffer->Release();
g_pBackBuffer = NULL;
}
if (g_pFramebufferCopy) {
g_pFramebufferCopy->Release();
g_pFramebufferCopy = NULL;
}
if (g_framebufferCopySRV) {
g_framebufferCopySRV->Release();
g_framebufferCopySRV = NULL;
}
}
// Forward declare message handler from imgui_impl_win32.cpp
extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
// Win32 message handler
// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
return true;
switch (msg)
{
case WM_SIZE:
if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
{
CleanupRenderTarget();
g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), DXGI_FORMAT_UNKNOWN, 0);
CreateRenderTarget();
}
return 0;
case WM_SYSCOMMAND:
if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
return 0;
break;
case WM_DESTROY:
::PostQuitMessage(0);
return 0;
}
return ::DefWindowProcW(hWnd, msg, wParam, lParam);
}

9
test/capi-tests/imgui/examples/example_win32_directx12/build_win32.bat vendored Normal file
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@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
@REM Important: to build on 32-bit systems, the DX12 backends needs '#define ImTextureID ImU64', so we pass it here.
@set OUT_DIR=Debug
@set OUT_EXE=example_win32_directx12
@set INCLUDES=/I..\.. /I..\..\backends /I "%WindowsSdkDir%Include\um" /I "%WindowsSdkDir%Include\shared"
@set SOURCES=main.cpp ..\..\backends\imgui_impl_dx12.cpp ..\..\backends\imgui_impl_win32.cpp ..\..\imgui*.cpp
@set LIBS=d3d12.lib d3dcompiler.lib dxgi.lib
mkdir Debug
cl /nologo /Zi /MD %INCLUDES% /D ImTextureID=ImU64 /D UNICODE /D _UNICODE %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS%

175
test/capi-tests/imgui/examples/example_win32_directx12/example_win32_directx12.vcxproj vendored Normal file
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<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup Label="ProjectConfigurations">
<ProjectConfiguration Include="Debug|Win32">
<Configuration>Debug</Configuration>
<Platform>Win32</Platform>
</ProjectConfiguration>
<ProjectConfiguration Include="Debug|x64">
<Configuration>Debug</Configuration>
<Platform>x64</Platform>
</ProjectConfiguration>
<ProjectConfiguration Include="Release|Win32">
<Configuration>Release</Configuration>
<Platform>Win32</Platform>
</ProjectConfiguration>
<ProjectConfiguration Include="Release|x64">
<Configuration>Release</Configuration>
<Platform>x64</Platform>
</ProjectConfiguration>
</ItemGroup>
<PropertyGroup Label="Globals">
<ProjectGuid>{b4cf9797-519d-4afe-a8f4-5141a6b521d3}</ProjectGuid>
<RootNamespace>example_win32_directx12</RootNamespace>
<WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
</PropertyGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
<ConfigurationType>Application</ConfigurationType>
<UseDebugLibraries>true</UseDebugLibraries>
<CharacterSet>Unicode</CharacterSet>
<PlatformToolset>v143</PlatformToolset>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
<ConfigurationType>Application</ConfigurationType>
<UseDebugLibraries>true</UseDebugLibraries>
<CharacterSet>Unicode</CharacterSet>
<PlatformToolset>v143</PlatformToolset>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
<ConfigurationType>Application</ConfigurationType>
<UseDebugLibraries>false</UseDebugLibraries>
<WholeProgramOptimization>true</WholeProgramOptimization>
<CharacterSet>Unicode</CharacterSet>
<PlatformToolset>v143</PlatformToolset>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
<ConfigurationType>Application</ConfigurationType>
<UseDebugLibraries>false</UseDebugLibraries>
<WholeProgramOptimization>true</WholeProgramOptimization>
<CharacterSet>Unicode</CharacterSet>
<PlatformToolset>v143</PlatformToolset>
</PropertyGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
<ImportGroup Label="ExtensionSettings">
</ImportGroup>
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
</ImportGroup>
<ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
</ImportGroup>
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
</ImportGroup>
<ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
</ImportGroup>
<PropertyGroup Label="UserMacros" />
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<OutDir>$(ProjectDir)$(Configuration)\</OutDir>
<IntDir>$(ProjectDir)$(Configuration)\</IntDir>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
<OutDir>$(ProjectDir)$(Configuration)\</OutDir>
<IntDir>$(ProjectDir)$(Configuration)\</IntDir>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<OutDir>$(ProjectDir)$(Configuration)\</OutDir>
<IntDir>$(ProjectDir)$(Configuration)\</IntDir>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
<OutDir>$(ProjectDir)$(Configuration)\</OutDir>
<IntDir>$(ProjectDir)$(Configuration)\</IntDir>
</PropertyGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<Optimization>Disabled</Optimization>
<AdditionalIncludeDirectories>..\..;..\..\backends;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<PreprocessorDefinitions>ImTextureID=ImU64;_UNICODE;UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
<Link>
<GenerateDebugInformation>true</GenerateDebugInformation>
<AdditionalDependencies>d3d12.lib;d3dcompiler.lib;dxgi.lib;%(AdditionalDependencies)</AdditionalDependencies>
<AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
<SubSystem>Console</SubSystem>
</Link>
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<Optimization>Disabled</Optimization>
<AdditionalIncludeDirectories>..\..;..\..\backends;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<PreprocessorDefinitions>ImTextureID=ImU64;_UNICODE;UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
<Link>
<GenerateDebugInformation>true</GenerateDebugInformation>
<AdditionalDependencies>d3d12.lib;d3dcompiler.lib;dxgi.lib;%(AdditionalDependencies)</AdditionalDependencies>
<AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
<SubSystem>Console</SubSystem>
</Link>
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<Optimization>MaxSpeed</Optimization>
<FunctionLevelLinking>true</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions>
<AdditionalIncludeDirectories>..\..;..\..\backends;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<PreprocessorDefinitions>ImTextureID=ImU64;_UNICODE;UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
<Link>
<GenerateDebugInformation>true</GenerateDebugInformation>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<OptimizeReferences>true</OptimizeReferences>
<AdditionalDependencies>d3d12.lib;d3dcompiler.lib;dxgi.lib;%(AdditionalDependencies)</AdditionalDependencies>
<AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
<SubSystem>Console</SubSystem>
</Link>
</ItemDefinitionGroup>
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
<ClCompile>
<WarningLevel>Level4</WarningLevel>
<Optimization>MaxSpeed</Optimization>
<FunctionLevelLinking>true</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions>
<AdditionalIncludeDirectories>..\..;..\..\backends;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<PreprocessorDefinitions>ImTextureID=ImU64;_UNICODE;UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
<Link>
<GenerateDebugInformation>true</GenerateDebugInformation>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<OptimizeReferences>true</OptimizeReferences>
<AdditionalDependencies>d3d12.lib;d3dcompiler.lib;dxgi.lib;%(AdditionalDependencies)</AdditionalDependencies>
<AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
<SubSystem>Console</SubSystem>
</Link>
</ItemDefinitionGroup>
<ItemGroup>
<ClInclude Include="..\..\imconfig.h" />
<ClInclude Include="..\..\imgui.h" />
<ClInclude Include="..\..\imgui_internal.h" />
<ClInclude Include="..\..\backends\imgui_impl_dx12.h" />
<ClInclude Include="..\..\backends\imgui_impl_win32.h" />
</ItemGroup>
<ItemGroup>
<ClCompile Include="..\..\imgui.cpp" />
<ClCompile Include="..\..\imgui_demo.cpp" />
<ClCompile Include="..\..\imgui_draw.cpp" />
<ClCompile Include="..\..\imgui_tables.cpp" />
<ClCompile Include="..\..\imgui_widgets.cpp" />
<ClCompile Include="..\..\backends\imgui_impl_dx12.cpp" />
<ClCompile Include="..\..\backends\imgui_impl_win32.cpp" />
<ClCompile Include="main.cpp" />
</ItemGroup>
<ItemGroup>
<None Include="..\README.txt" />
</ItemGroup>
<ItemGroup>
<Natvis Include="..\..\misc\debuggers\imgui.natvis" />
</ItemGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">
</ImportGroup>
</Project>

62
test/capi-tests/imgui/examples/example_win32_directx12/example_win32_directx12.vcxproj.filters vendored Normal file
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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup>
<Filter Include="sources">
<UniqueIdentifier>{4f33ddea-9910-456d-b868-4267eb3c2b19}</UniqueIdentifier>
</Filter>
<Filter Include="imgui">
<UniqueIdentifier>{fb3d294f-51ec-478e-a627-25831c80fefd}</UniqueIdentifier>
</Filter>
</ItemGroup>
<ItemGroup>
<ClInclude Include="..\..\imconfig.h">
<Filter>imgui</Filter>
</ClInclude>
<ClInclude Include="..\..\imgui.h">
<Filter>imgui</Filter>
</ClInclude>
<ClInclude Include="..\..\imgui_internal.h">
<Filter>imgui</Filter>
</ClInclude>
<ClInclude Include="..\..\backends\imgui_impl_dx12.h">
<Filter>sources</Filter>
</ClInclude>
<ClInclude Include="..\..\backends\imgui_impl_win32.h">
<Filter>sources</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<ClCompile Include="..\..\imgui.cpp">
<Filter>imgui</Filter>
</ClCompile>
<ClCompile Include="main.cpp">
<Filter>sources</Filter>
</ClCompile>
<ClCompile Include="..\..\imgui_demo.cpp">
<Filter>imgui</Filter>
</ClCompile>
<ClCompile Include="..\..\imgui_draw.cpp">
<Filter>imgui</Filter>
</ClCompile>
<ClCompile Include="..\..\backends\imgui_impl_dx12.cpp">
<Filter>sources</Filter>
</ClCompile>
<ClCompile Include="..\..\backends\imgui_impl_win32.cpp">
<Filter>sources</Filter>
</ClCompile>
<ClCompile Include="..\..\imgui_tables.cpp">
<Filter>imgui</Filter>
</ClCompile>
<ClCompile Include="..\..\imgui_widgets.cpp">
<Filter>imgui</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<None Include="..\README.txt" />
</ItemGroup>
<ItemGroup>
<Natvis Include="..\..\misc\debuggers\imgui.natvis">
<Filter>imgui</Filter>
</Natvis>
</ItemGroup>
</Project>

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test/capi-tests/imgui/examples/example_win32_directx12/main.cpp vendored Normal file
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// Dear ImGui: standalone example application for DirectX 12
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
// Important: to compile on 32-bit systems, the DirectX12 backend requires code to be compiled with '#define ImTextureID ImU64'.
// This is because we need ImTextureID to carry a 64-bit value and by default ImTextureID is defined as void*.
// This define is set in the example .vcxproj file and need to be replicated in your app or by adding it to your imconfig.h file.
#include "imgui.h"
#include "imgui_impl_win32.h"
#include "imgui_impl_dx12.h"
#include <d3d12.h>
#include <dxgi1_4.h>
#include <tchar.h>
#ifdef _DEBUG
#define DX12_ENABLE_DEBUG_LAYER
#endif
#ifdef DX12_ENABLE_DEBUG_LAYER
#include <dxgidebug.h>
#pragma comment(lib, "dxguid.lib")
#endif
struct FrameContext
{
ID3D12CommandAllocator* CommandAllocator;
UINT64 FenceValue;
};
// Data
static int const NUM_FRAMES_IN_FLIGHT = 3;
static FrameContext g_frameContext[NUM_FRAMES_IN_FLIGHT] = {};
static UINT g_frameIndex = 0;
static int const NUM_BACK_BUFFERS = 3;
static ID3D12Device* g_pd3dDevice = NULL;
static ID3D12DescriptorHeap* g_pd3dRtvDescHeap = NULL;
static ID3D12DescriptorHeap* g_pd3dSrvDescHeap = NULL;
static ID3D12CommandQueue* g_pd3dCommandQueue = NULL;
static ID3D12GraphicsCommandList* g_pd3dCommandList = NULL;
static ID3D12Fence* g_fence = NULL;
static HANDLE g_fenceEvent = NULL;
static UINT64 g_fenceLastSignaledValue = 0;
static IDXGISwapChain3* g_pSwapChain = NULL;
static HANDLE g_hSwapChainWaitableObject = NULL;
static ID3D12Resource* g_mainRenderTargetResource[NUM_BACK_BUFFERS] = {};
static D3D12_CPU_DESCRIPTOR_HANDLE g_mainRenderTargetDescriptor[NUM_BACK_BUFFERS] = {};
// Forward declarations of helper functions
bool CreateDeviceD3D(HWND hWnd);
void CleanupDeviceD3D();
void CreateRenderTarget();
void CleanupRenderTarget();
void WaitForLastSubmittedFrame();
FrameContext* WaitForNextFrameResources();
LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
// Main code
int main(int, char**)
{
// Create application window
//ImGui_ImplWin32_EnableDpiAwareness();
WNDCLASSEXW wc = { sizeof(wc), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, L"ImGui Example", NULL };
::RegisterClassExW(&wc);
HWND hwnd = ::CreateWindowW(wc.lpszClassName, L"Dear ImGui DirectX12 Example", WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
// Initialize Direct3D
if (!CreateDeviceD3D(hwnd))
{
CleanupDeviceD3D();
::UnregisterClassW(wc.lpszClassName, wc.hInstance);
return 1;
}
// Show the window
::ShowWindow(hwnd, SW_SHOWDEFAULT);
::UpdateWindow(hwnd);
// Setup Dear ImGui context
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
// Setup Dear ImGui style
ImGui::StyleColorsDark();
//ImGui::StyleColorsLight();
// Setup Platform/Renderer backends
ImGui_ImplWin32_Init(hwnd);
ImGui_ImplDX12_Init(g_pd3dDevice, NUM_FRAMES_IN_FLIGHT,
DXGI_FORMAT_R8G8B8A8_UNORM, g_pd3dSrvDescHeap,
g_pd3dSrvDescHeap->GetCPUDescriptorHandleForHeapStart(),
g_pd3dSrvDescHeap->GetGPUDescriptorHandleForHeapStart());
// Load Fonts
// - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
// - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use Freetype for higher quality font rendering.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf", 18.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != NULL);
// Our state
bool show_demo_window = true;
bool show_another_window = false;
ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
// Main loop
bool done = false;
while (!done)
{
// Poll and handle messages (inputs, window resize, etc.)
// See the WndProc() function below for our to dispatch events to the Win32 backend.
MSG msg;
while (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
{
::TranslateMessage(&msg);
::DispatchMessage(&msg);
if (msg.message == WM_QUIT)
done = true;
}
if (done)
break;
// Start the Dear ImGui frame
ImGui_ImplDX12_NewFrame();
ImGui_ImplWin32_NewFrame();
ImGui::NewFrame();
// 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
if (show_demo_window)
ImGui::ShowDemoWindow(&show_demo_window);
// 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
{
static float f = 0.0f;
static int counter = 0;
ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
ImGui::Checkbox("Another Window", &show_another_window);
ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
counter++;
ImGui::SameLine();
ImGui::Text("counter = %d", counter);
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
ImGui::End();
}
// 3. Show another simple window.
if (show_another_window)
{
ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
ImGui::Text("Hello from another window!");
if (ImGui::Button("Close Me"))
show_another_window = false;
ImGui::End();
}
// Rendering
ImGui::Render();
FrameContext* frameCtx = WaitForNextFrameResources();
UINT backBufferIdx = g_pSwapChain->GetCurrentBackBufferIndex();
frameCtx->CommandAllocator->Reset();
D3D12_RESOURCE_BARRIER barrier = {};
barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
barrier.Transition.pResource = g_mainRenderTargetResource[backBufferIdx];
barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_PRESENT;
barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_RENDER_TARGET;
g_pd3dCommandList->Reset(frameCtx->CommandAllocator, NULL);
g_pd3dCommandList->ResourceBarrier(1, &barrier);
// Render Dear ImGui graphics
const float clear_color_with_alpha[4] = { clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w };
g_pd3dCommandList->ClearRenderTargetView(g_mainRenderTargetDescriptor[backBufferIdx], clear_color_with_alpha, 0, NULL);
g_pd3dCommandList->OMSetRenderTargets(1, &g_mainRenderTargetDescriptor[backBufferIdx], FALSE, NULL);
g_pd3dCommandList->SetDescriptorHeaps(1, &g_pd3dSrvDescHeap);
ImGui_ImplDX12_RenderDrawData(ImGui::GetDrawData(), g_pd3dCommandList);
barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_RENDER_TARGET;
barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_PRESENT;
g_pd3dCommandList->ResourceBarrier(1, &barrier);
g_pd3dCommandList->Close();
g_pd3dCommandQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*)&g_pd3dCommandList);
g_pSwapChain->Present(1, 0); // Present with vsync
//g_pSwapChain->Present(0, 0); // Present without vsync
UINT64 fenceValue = g_fenceLastSignaledValue + 1;
g_pd3dCommandQueue->Signal(g_fence, fenceValue);
g_fenceLastSignaledValue = fenceValue;
frameCtx->FenceValue = fenceValue;
}
WaitForLastSubmittedFrame();
// Cleanup
ImGui_ImplDX12_Shutdown();
ImGui_ImplWin32_Shutdown();
ImGui::DestroyContext();
CleanupDeviceD3D();
::DestroyWindow(hwnd);
::UnregisterClassW(wc.lpszClassName, wc.hInstance);
return 0;
}
// Helper functions
bool CreateDeviceD3D(HWND hWnd)
{
// Setup swap chain
DXGI_SWAP_CHAIN_DESC1 sd;
{
ZeroMemory(&sd, sizeof(sd));
sd.BufferCount = NUM_BACK_BUFFERS;
sd.Width = 0;
sd.Height = 0;
sd.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
sd.Flags = DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT;
sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
sd.SampleDesc.Count = 1;
sd.SampleDesc.Quality = 0;
sd.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD;
sd.AlphaMode = DXGI_ALPHA_MODE_UNSPECIFIED;
sd.Scaling = DXGI_SCALING_STRETCH;
sd.Stereo = FALSE;
}
// [DEBUG] Enable debug interface
#ifdef DX12_ENABLE_DEBUG_LAYER
ID3D12Debug* pdx12Debug = NULL;
if (SUCCEEDED(D3D12GetDebugInterface(IID_PPV_ARGS(&pdx12Debug))))
pdx12Debug->EnableDebugLayer();
#endif
// Create device
D3D_FEATURE_LEVEL featureLevel = D3D_FEATURE_LEVEL_11_0;
if (D3D12CreateDevice(NULL, featureLevel, IID_PPV_ARGS(&g_pd3dDevice)) != S_OK)
return false;
// [DEBUG] Setup debug interface to break on any warnings/errors
#ifdef DX12_ENABLE_DEBUG_LAYER
if (pdx12Debug != NULL)
{
ID3D12InfoQueue* pInfoQueue = NULL;
g_pd3dDevice->QueryInterface(IID_PPV_ARGS(&pInfoQueue));
pInfoQueue->SetBreakOnSeverity(D3D12_MESSAGE_SEVERITY_ERROR, true);
pInfoQueue->SetBreakOnSeverity(D3D12_MESSAGE_SEVERITY_CORRUPTION, true);
pInfoQueue->SetBreakOnSeverity(D3D12_MESSAGE_SEVERITY_WARNING, true);
pInfoQueue->Release();
pdx12Debug->Release();
}
#endif
{
D3D12_DESCRIPTOR_HEAP_DESC desc = {};
desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
desc.NumDescriptors = NUM_BACK_BUFFERS;
desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
desc.NodeMask = 1;
if (g_pd3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&g_pd3dRtvDescHeap)) != S_OK)
return false;
SIZE_T rtvDescriptorSize = g_pd3dDevice->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = g_pd3dRtvDescHeap->GetCPUDescriptorHandleForHeapStart();
for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
{
g_mainRenderTargetDescriptor[i] = rtvHandle;
rtvHandle.ptr += rtvDescriptorSize;
}
}
{
D3D12_DESCRIPTOR_HEAP_DESC desc = {};
desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
desc.NumDescriptors = 1;
desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
if (g_pd3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&g_pd3dSrvDescHeap)) != S_OK)
return false;
}
{
D3D12_COMMAND_QUEUE_DESC desc = {};
desc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
desc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
desc.NodeMask = 1;
if (g_pd3dDevice->CreateCommandQueue(&desc, IID_PPV_ARGS(&g_pd3dCommandQueue)) != S_OK)
return false;
}
for (UINT i = 0; i < NUM_FRAMES_IN_FLIGHT; i++)
if (g_pd3dDevice->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&g_frameContext[i].CommandAllocator)) != S_OK)
return false;
if (g_pd3dDevice->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, g_frameContext[0].CommandAllocator, NULL, IID_PPV_ARGS(&g_pd3dCommandList)) != S_OK ||
g_pd3dCommandList->Close() != S_OK)
return false;
if (g_pd3dDevice->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&g_fence)) != S_OK)
return false;
g_fenceEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
if (g_fenceEvent == NULL)
return false;
{
IDXGIFactory4* dxgiFactory = NULL;
IDXGISwapChain1* swapChain1 = NULL;
if (CreateDXGIFactory1(IID_PPV_ARGS(&dxgiFactory)) != S_OK)
return false;
if (dxgiFactory->CreateSwapChainForHwnd(g_pd3dCommandQueue, hWnd, &sd, NULL, NULL, &swapChain1) != S_OK)
return false;
if (swapChain1->QueryInterface(IID_PPV_ARGS(&g_pSwapChain)) != S_OK)
return false;
swapChain1->Release();
dxgiFactory->Release();
g_pSwapChain->SetMaximumFrameLatency(NUM_BACK_BUFFERS);
g_hSwapChainWaitableObject = g_pSwapChain->GetFrameLatencyWaitableObject();
}
CreateRenderTarget();
return true;
}
void CleanupDeviceD3D()
{
CleanupRenderTarget();
if (g_pSwapChain) { g_pSwapChain->SetFullscreenState(false, NULL); g_pSwapChain->Release(); g_pSwapChain = NULL; }
if (g_hSwapChainWaitableObject != NULL) { CloseHandle(g_hSwapChainWaitableObject); }
for (UINT i = 0; i < NUM_FRAMES_IN_FLIGHT; i++)
if (g_frameContext[i].CommandAllocator) { g_frameContext[i].CommandAllocator->Release(); g_frameContext[i].CommandAllocator = NULL; }
if (g_pd3dCommandQueue) { g_pd3dCommandQueue->Release(); g_pd3dCommandQueue = NULL; }
if (g_pd3dCommandList) { g_pd3dCommandList->Release(); g_pd3dCommandList = NULL; }
if (g_pd3dRtvDescHeap) { g_pd3dRtvDescHeap->Release(); g_pd3dRtvDescHeap = NULL; }
if (g_pd3dSrvDescHeap) { g_pd3dSrvDescHeap->Release(); g_pd3dSrvDescHeap = NULL; }
if (g_fence) { g_fence->Release(); g_fence = NULL; }
if (g_fenceEvent) { CloseHandle(g_fenceEvent); g_fenceEvent = NULL; }
if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
#ifdef DX12_ENABLE_DEBUG_LAYER
IDXGIDebug1* pDebug = NULL;
if (SUCCEEDED(DXGIGetDebugInterface1(0, IID_PPV_ARGS(&pDebug))))
{
pDebug->ReportLiveObjects(DXGI_DEBUG_ALL, DXGI_DEBUG_RLO_SUMMARY);
pDebug->Release();
}
#endif
}
void CreateRenderTarget()
{
for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
{
ID3D12Resource* pBackBuffer = NULL;
g_pSwapChain->GetBuffer(i, IID_PPV_ARGS(&pBackBuffer));
g_pd3dDevice->CreateRenderTargetView(pBackBuffer, NULL, g_mainRenderTargetDescriptor[i]);
g_mainRenderTargetResource[i] = pBackBuffer;
}
}
void CleanupRenderTarget()
{
WaitForLastSubmittedFrame();
for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
if (g_mainRenderTargetResource[i]) { g_mainRenderTargetResource[i]->Release(); g_mainRenderTargetResource[i] = NULL; }
}
void WaitForLastSubmittedFrame()
{
FrameContext* frameCtx = &g_frameContext[g_frameIndex % NUM_FRAMES_IN_FLIGHT];
UINT64 fenceValue = frameCtx->FenceValue;
if (fenceValue == 0)
return; // No fence was signaled
frameCtx->FenceValue = 0;
if (g_fence->GetCompletedValue() >= fenceValue)
return;
g_fence->SetEventOnCompletion(fenceValue, g_fenceEvent);
WaitForSingleObject(g_fenceEvent, INFINITE);
}
FrameContext* WaitForNextFrameResources()
{
UINT nextFrameIndex = g_frameIndex + 1;
g_frameIndex = nextFrameIndex;
HANDLE waitableObjects[] = { g_hSwapChainWaitableObject, NULL };
DWORD numWaitableObjects = 1;
FrameContext* frameCtx = &g_frameContext[nextFrameIndex % NUM_FRAMES_IN_FLIGHT];
UINT64 fenceValue = frameCtx->FenceValue;
if (fenceValue != 0) // means no fence was signaled
{
frameCtx->FenceValue = 0;
g_fence->SetEventOnCompletion(fenceValue, g_fenceEvent);
waitableObjects[1] = g_fenceEvent;
numWaitableObjects = 2;
}
WaitForMultipleObjects(numWaitableObjects, waitableObjects, TRUE, INFINITE);
return frameCtx;
}
// Forward declare message handler from imgui_impl_win32.cpp
extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
// Win32 message handler
// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
return true;
switch (msg)
{
case WM_SIZE:
if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
{
WaitForLastSubmittedFrame();
CleanupRenderTarget();
HRESULT result = g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), DXGI_FORMAT_UNKNOWN, DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT);
assert(SUCCEEDED(result) && "Failed to resize swapchain.");
CreateRenderTarget();
}
return 0;
case WM_SYSCOMMAND:
if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
return 0;
break;
case WM_DESTROY:
::PostQuitMessage(0);
return 0;
}
return ::DefWindowProcW(hWnd, msg, wParam, lParam);
}

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test/capi-tests/imgui/examples/imgui_examples.sln vendored Normal file
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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 17
VisualStudioVersion = 17.2.32616.157
MinimumVisualStudioVersion = 10.0.40219.1
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_win32_directx11", "example_win32_directx11\example_win32_directx11.vcxproj", "{9F316E83-5AE5-4939-A723-305A94F48005}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_win32_directx12", "example_win32_directx12\example_win32_directx12.vcxproj", "{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_glfw_opengl3", "example_glfw_opengl3\example_glfw_opengl3.vcxproj", "{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example_glfw_vulkan", "example_glfw_vulkan\example_glfw_vulkan.vcxproj", "{57E2DF5A-6FC8-45BB-99DD-91A18C646E80}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Win32 = Debug|Win32
Debug|x64 = Debug|x64
Release|Win32 = Release|Win32
Release|x64 = Release|x64
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{9F316E83-5AE5-4939-A723-305A94F48005}.Debug|Win32.ActiveCfg = Debug|Win32
{9F316E83-5AE5-4939-A723-305A94F48005}.Debug|Win32.Build.0 = Debug|Win32
{9F316E83-5AE5-4939-A723-305A94F48005}.Debug|x64.ActiveCfg = Debug|x64
{9F316E83-5AE5-4939-A723-305A94F48005}.Debug|x64.Build.0 = Debug|x64
{9F316E83-5AE5-4939-A723-305A94F48005}.Release|Win32.ActiveCfg = Release|Win32
{9F316E83-5AE5-4939-A723-305A94F48005}.Release|Win32.Build.0 = Release|Win32
{9F316E83-5AE5-4939-A723-305A94F48005}.Release|x64.ActiveCfg = Release|x64
{9F316E83-5AE5-4939-A723-305A94F48005}.Release|x64.Build.0 = Release|x64
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Debug|Win32.ActiveCfg = Debug|Win32
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Debug|Win32.Build.0 = Debug|Win32
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Debug|x64.ActiveCfg = Debug|x64
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Debug|x64.Build.0 = Debug|x64
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Release|Win32.ActiveCfg = Release|Win32
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Release|Win32.Build.0 = Release|Win32
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Release|x64.ActiveCfg = Release|x64
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Release|x64.Build.0 = Release|x64
{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Debug|Win32.ActiveCfg = Debug|Win32
{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Debug|Win32.Build.0 = Debug|Win32
{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Debug|x64.ActiveCfg = Debug|x64
{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Debug|x64.Build.0 = Debug|x64
{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Release|Win32.ActiveCfg = Release|Win32
{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Release|Win32.Build.0 = Release|Win32
{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Release|x64.ActiveCfg = Release|x64
{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Release|x64.Build.0 = Release|x64
{57E2DF5A-6FC8-45BB-99DD-91A18C646E80}.Debug|Win32.ActiveCfg = Debug|Win32
{57E2DF5A-6FC8-45BB-99DD-91A18C646E80}.Debug|Win32.Build.0 = Debug|Win32
{57E2DF5A-6FC8-45BB-99DD-91A18C646E80}.Debug|x64.ActiveCfg = Debug|x64
{57E2DF5A-6FC8-45BB-99DD-91A18C646E80}.Debug|x64.Build.0 = Debug|x64
{57E2DF5A-6FC8-45BB-99DD-91A18C646E80}.Release|Win32.ActiveCfg = Release|Win32
{57E2DF5A-6FC8-45BB-99DD-91A18C646E80}.Release|Win32.Build.0 = Release|Win32
{57E2DF5A-6FC8-45BB-99DD-91A18C646E80}.Release|x64.ActiveCfg = Release|x64
{57E2DF5A-6FC8-45BB-99DD-91A18C646E80}.Release|x64.Build.0 = Release|x64
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {B1ACFD20-A0A9-4A4C-ADBA-E7608F0E2BEE}
EndGlobalSection
EndGlobal

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test/capi-tests/imgui/examples/libs/glfw/COPYING.txt vendored Normal file
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Copyright (c) 2002-2006 Marcus Geelnard
Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would
be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not
be misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.

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test/capi-tests/imgui/examples/libs/glfw/include/GLFW/glfw3.h vendored Normal file
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test/capi-tests/imgui/examples/libs/glfw/include/GLFW/glfw3native.h vendored Normal file
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/*************************************************************************
* GLFW 3.2 - www.glfw.org
* A library for OpenGL, window and input
*------------------------------------------------------------------------
* Copyright (c) 2002-2006 Marcus Geelnard
* Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would
* be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not
* be misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*
*************************************************************************/
#ifndef _glfw3_native_h_
#define _glfw3_native_h_
#ifdef __cplusplus
extern "C" {
#endif
/*************************************************************************
* Doxygen documentation
*************************************************************************/
/*! @file glfw3native.h
* @brief The header of the native access functions.
*
* This is the header file of the native access functions. See @ref native for
* more information.
*/
/*! @defgroup native Native access
*
* **By using the native access functions you assert that you know what you're
* doing and how to fix problems caused by using them. If you don't, you
* shouldn't be using them.**
*
* Before the inclusion of @ref glfw3native.h, you may define exactly one
* window system API macro and zero or more context creation API macros.
*
* The chosen backends must match those the library was compiled for. Failure
* to do this will cause a link-time error.
*
* The available window API macros are:
* * `GLFW_EXPOSE_NATIVE_WIN32`
* * `GLFW_EXPOSE_NATIVE_COCOA`
* * `GLFW_EXPOSE_NATIVE_X11`
* * `GLFW_EXPOSE_NATIVE_WAYLAND`
* * `GLFW_EXPOSE_NATIVE_MIR`
*
* The available context API macros are:
* * `GLFW_EXPOSE_NATIVE_WGL`
* * `GLFW_EXPOSE_NATIVE_NSGL`
* * `GLFW_EXPOSE_NATIVE_GLX`
* * `GLFW_EXPOSE_NATIVE_EGL`
*
* These macros select which of the native access functions that are declared
* and which platform-specific headers to include. It is then up your (by
* definition platform-specific) code to handle which of these should be
* defined.
*/
/*************************************************************************
* System headers and types
*************************************************************************/
#if defined(GLFW_EXPOSE_NATIVE_WIN32)
// This is a workaround for the fact that glfw3.h needs to export APIENTRY (for
// example to allow applications to correctly declare a GL_ARB_debug_output
// callback) but windows.h assumes no one will define APIENTRY before it does
#undef APIENTRY
#include <windows.h>
#elif defined(GLFW_EXPOSE_NATIVE_COCOA)
#include <ApplicationServices/ApplicationServices.h>
#if defined(__OBJC__)
#import <Cocoa/Cocoa.h>
#else
typedef void* id;
#endif
#elif defined(GLFW_EXPOSE_NATIVE_X11)
#include <X11/Xlib.h>
#include <X11/extensions/Xrandr.h>
#elif defined(GLFW_EXPOSE_NATIVE_WAYLAND)
#include <wayland-client.h>
#elif defined(GLFW_EXPOSE_NATIVE_MIR)
#include <mir_toolkit/mir_client_library.h>
#endif
#if defined(GLFW_EXPOSE_NATIVE_WGL)
/* WGL is declared by windows.h */
#endif
#if defined(GLFW_EXPOSE_NATIVE_NSGL)
/* NSGL is declared by Cocoa.h */
#endif
#if defined(GLFW_EXPOSE_NATIVE_GLX)
#include <GL/glx.h>
#endif
#if defined(GLFW_EXPOSE_NATIVE_EGL)
#include <EGL/egl.h>
#endif
/*************************************************************************
* Functions
*************************************************************************/
#if defined(GLFW_EXPOSE_NATIVE_WIN32)
/*! @brief Returns the adapter device name of the specified monitor.
*
* @return The UTF-8 encoded adapter device name (for example `\\.\DISPLAY1`)
* of the specified monitor, or `NULL` if an [error](@ref error_handling)
* occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.1.
*
* @ingroup native
*/
GLFWAPI const char* glfwGetWin32Adapter(GLFWmonitor* monitor);
/*! @brief Returns the display device name of the specified monitor.
*
* @return The UTF-8 encoded display device name (for example
* `\\.\DISPLAY1\Monitor0`) of the specified monitor, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.1.
*
* @ingroup native
*/
GLFWAPI const char* glfwGetWin32Monitor(GLFWmonitor* monitor);
/*! @brief Returns the `HWND` of the specified window.
*
* @return The `HWND` of the specified window, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI HWND glfwGetWin32Window(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_WGL)
/*! @brief Returns the `HGLRC` of the specified window.
*
* @return The `HGLRC` of the specified window, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI HGLRC glfwGetWGLContext(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_COCOA)
/*! @brief Returns the `CGDirectDisplayID` of the specified monitor.
*
* @return The `CGDirectDisplayID` of the specified monitor, or
* `kCGNullDirectDisplay` if an [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.1.
*
* @ingroup native
*/
GLFWAPI CGDirectDisplayID glfwGetCocoaMonitor(GLFWmonitor* monitor);
/*! @brief Returns the `NSWindow` of the specified window.
*
* @return The `NSWindow` of the specified window, or `nil` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI id glfwGetCocoaWindow(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_NSGL)
/*! @brief Returns the `NSOpenGLContext` of the specified window.
*
* @return The `NSOpenGLContext` of the specified window, or `nil` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI id glfwGetNSGLContext(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_X11)
/*! @brief Returns the `Display` used by GLFW.
*
* @return The `Display` used by GLFW, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI Display* glfwGetX11Display(void);
/*! @brief Returns the `RRCrtc` of the specified monitor.
*
* @return The `RRCrtc` of the specified monitor, or `None` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.1.
*
* @ingroup native
*/
GLFWAPI RRCrtc glfwGetX11Adapter(GLFWmonitor* monitor);
/*! @brief Returns the `RROutput` of the specified monitor.
*
* @return The `RROutput` of the specified monitor, or `None` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.1.
*
* @ingroup native
*/
GLFWAPI RROutput glfwGetX11Monitor(GLFWmonitor* monitor);
/*! @brief Returns the `Window` of the specified window.
*
* @return The `Window` of the specified window, or `None` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI Window glfwGetX11Window(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_GLX)
/*! @brief Returns the `GLXContext` of the specified window.
*
* @return The `GLXContext` of the specified window, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI GLXContext glfwGetGLXContext(GLFWwindow* window);
/*! @brief Returns the `GLXWindow` of the specified window.
*
* @return The `GLXWindow` of the specified window, or `None` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.2.
*
* @ingroup native
*/
GLFWAPI GLXWindow glfwGetGLXWindow(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_WAYLAND)
/*! @brief Returns the `struct wl_display*` used by GLFW.
*
* @return The `struct wl_display*` used by GLFW, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.2.
*
* @ingroup native
*/
GLFWAPI struct wl_display* glfwGetWaylandDisplay(void);
/*! @brief Returns the `struct wl_output*` of the specified monitor.
*
* @return The `struct wl_output*` of the specified monitor, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.2.
*
* @ingroup native
*/
GLFWAPI struct wl_output* glfwGetWaylandMonitor(GLFWmonitor* monitor);
/*! @brief Returns the main `struct wl_surface*` of the specified window.
*
* @return The main `struct wl_surface*` of the specified window, or `NULL` if
* an [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.2.
*
* @ingroup native
*/
GLFWAPI struct wl_surface* glfwGetWaylandWindow(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_MIR)
/*! @brief Returns the `MirConnection*` used by GLFW.
*
* @return The `MirConnection*` used by GLFW, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.2.
*
* @ingroup native
*/
GLFWAPI MirConnection* glfwGetMirDisplay(void);
/*! @brief Returns the Mir output ID of the specified monitor.
*
* @return The Mir output ID of the specified monitor, or zero if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.2.
*
* @ingroup native
*/
GLFWAPI int glfwGetMirMonitor(GLFWmonitor* monitor);
/*! @brief Returns the `MirSurface*` of the specified window.
*
* @return The `MirSurface*` of the specified window, or `NULL` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.2.
*
* @ingroup native
*/
GLFWAPI MirSurface* glfwGetMirWindow(GLFWwindow* window);
#endif
#if defined(GLFW_EXPOSE_NATIVE_EGL)
/*! @brief Returns the `EGLDisplay` used by GLFW.
*
* @return The `EGLDisplay` used by GLFW, or `EGL_NO_DISPLAY` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI EGLDisplay glfwGetEGLDisplay(void);
/*! @brief Returns the `EGLContext` of the specified window.
*
* @return The `EGLContext` of the specified window, or `EGL_NO_CONTEXT` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI EGLContext glfwGetEGLContext(GLFWwindow* window);
/*! @brief Returns the `EGLSurface` of the specified window.
*
* @return The `EGLSurface` of the specified window, or `EGL_NO_SURFACE` if an
* [error](@ref error_handling) occurred.
*
* @thread_safety This function may be called from any thread. Access is not
* synchronized.
*
* @since Added in version 3.0.
*
* @ingroup native
*/
GLFWAPI EGLSurface glfwGetEGLSurface(GLFWwindow* window);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _glfw3_native_h_ */

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uSynergy client -- Implementation for the embedded Synergy client library
version 1.0.0, July 7th, 2012
Copyright (c) 2012 Alex Evans
This is a copy of the files once found at:
https://github.com/symless/synergy-core/tree/790d108a56ada9caad8e56ff777d444485a69da9/src/micro

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/*
uSynergy client -- Implementation for the embedded Synergy client library
version 1.0.0, July 7th, 2012
Copyright (c) 2012 Alex Evans
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
*/
#include "uSynergy.h"
#include <stdio.h>
#include <string.h>
//---------------------------------------------------------------------------------------------------------------------
// Internal helpers
//---------------------------------------------------------------------------------------------------------------------
/**
@brief Read 16 bit integer in network byte order and convert to native byte order
**/
static int16_t sNetToNative16(const unsigned char *value)
{
#ifdef USYNERGY_LITTLE_ENDIAN
return value[1] | (value[0] << 8);
#else
return value[0] | (value[1] << 8);
#endif
}
/**
@brief Read 32 bit integer in network byte order and convert to native byte order
**/
static int32_t sNetToNative32(const unsigned char *value)
{
#ifdef USYNERGY_LITTLE_ENDIAN
return value[3] | (value[2] << 8) | (value[1] << 16) | (value[0] << 24);
#else
return value[0] | (value[1] << 8) | (value[2] << 16) | (value[3] << 24);
#endif
}
/**
@brief Trace text to client
**/
static void sTrace(uSynergyContext *context, const char* text)
{
// Don't trace if we don't have a trace function
if (context->m_traceFunc != 0L)
context->m_traceFunc(context->m_cookie, text);
}
/**
@brief Add string to reply packet
**/
static void sAddString(uSynergyContext *context, const char *string)
{
size_t len = strlen(string);
memcpy(context->m_replyCur, string, len);
context->m_replyCur += len;
}
/**
@brief Add uint8 to reply packet
**/
static void sAddUInt8(uSynergyContext *context, uint8_t value)
{
*context->m_replyCur++ = value;
}
/**
@brief Add uint16 to reply packet
**/
static void sAddUInt16(uSynergyContext *context, uint16_t value)
{
uint8_t *reply = context->m_replyCur;
*reply++ = (uint8_t)(value >> 8);
*reply++ = (uint8_t)value;
context->m_replyCur = reply;
}
/**
@brief Add uint32 to reply packet
**/
static void sAddUInt32(uSynergyContext *context, uint32_t value)
{
uint8_t *reply = context->m_replyCur;
*reply++ = (uint8_t)(value >> 24);
*reply++ = (uint8_t)(value >> 16);
*reply++ = (uint8_t)(value >> 8);
*reply++ = (uint8_t)value;
context->m_replyCur = reply;
}
/**
@brief Send reply packet
**/
static uSynergyBool sSendReply(uSynergyContext *context)
{
// Set header size
uint8_t *reply_buf = context->m_replyBuffer;
uint32_t reply_len = (uint32_t)(context->m_replyCur - reply_buf); /* Total size of reply */
uint32_t body_len = reply_len - 4; /* Size of body */
uSynergyBool ret;
reply_buf[0] = (uint8_t)(body_len >> 24);
reply_buf[1] = (uint8_t)(body_len >> 16);
reply_buf[2] = (uint8_t)(body_len >> 8);
reply_buf[3] = (uint8_t)body_len;
// Send reply
ret = context->m_sendFunc(context->m_cookie, context->m_replyBuffer, reply_len);
// Reset reply buffer write pointer
context->m_replyCur = context->m_replyBuffer+4;
return ret;
}
/**
@brief Call mouse callback after a mouse event
**/
static void sSendMouseCallback(uSynergyContext *context)
{
// Skip if no callback is installed
if (context->m_mouseCallback == 0L)
return;
// Send callback
context->m_mouseCallback(context->m_cookie, context->m_mouseX, context->m_mouseY, context->m_mouseWheelX,
context->m_mouseWheelY, context->m_mouseButtonLeft, context->m_mouseButtonRight, context->m_mouseButtonMiddle);
}
/**
@brief Send keyboard callback when a key has been pressed or released
**/
static void sSendKeyboardCallback(uSynergyContext *context, uint16_t key, uint16_t modifiers, uSynergyBool down, uSynergyBool repeat)
{
// Skip if no callback is installed
if (context->m_keyboardCallback == 0L)
return;
// Send callback
context->m_keyboardCallback(context->m_cookie, key, modifiers, down, repeat);
}
/**
@brief Send joystick callback
**/
static void sSendJoystickCallback(uSynergyContext *context, uint8_t joyNum)
{
int8_t *sticks;
// Skip if no callback is installed
if (context->m_joystickCallback == 0L)
return;
// Send callback
sticks = context->m_joystickSticks[joyNum];
context->m_joystickCallback(context->m_cookie, joyNum, context->m_joystickButtons[joyNum], sticks[0], sticks[1], sticks[2], sticks[3]);
}
/**
@brief Parse a single client message, update state, send callbacks and send replies
**/
#define USYNERGY_IS_PACKET(pkt_id) memcmp(message+4, pkt_id, 4)==0
static void sProcessMessage(uSynergyContext *context, const uint8_t *message)
{
// We have a packet!
if (memcmp(message+4, "Synergy", 7)==0)
{
// Welcome message
// kMsgHello = "Synergy%2i%2i"
// kMsgHelloBack = "Synergy%2i%2i%s"
sAddString(context, "Synergy");
sAddUInt16(context, USYNERGY_PROTOCOL_MAJOR);
sAddUInt16(context, USYNERGY_PROTOCOL_MINOR);
sAddUInt32(context, (uint32_t)strlen(context->m_clientName));
sAddString(context, context->m_clientName);
if (!sSendReply(context))
{
// Send reply failed, let's try to reconnect
sTrace(context, "SendReply failed, trying to reconnect in a second");
context->m_connected = USYNERGY_FALSE;
context->m_sleepFunc(context->m_cookie, 1000);
}
else
{
// Let's assume we're connected
char buffer[256+1];
sprintf(buffer, "Connected as client \"%s\"", context->m_clientName);
sTrace(context, buffer);
context->m_hasReceivedHello = USYNERGY_TRUE;
}
return;
}
else if (USYNERGY_IS_PACKET("QINF"))
{
// Screen info. Reply with DINF
// kMsgQInfo = "QINF"
// kMsgDInfo = "DINF%2i%2i%2i%2i%2i%2i%2i"
uint16_t x = 0, y = 0, warp = 0;
sAddString(context, "DINF");
sAddUInt16(context, x);
sAddUInt16(context, y);
sAddUInt16(context, context->m_clientWidth);
sAddUInt16(context, context->m_clientHeight);
sAddUInt16(context, warp);
sAddUInt16(context, 0); // mx?
sAddUInt16(context, 0); // my?
sSendReply(context);
return;
}
else if (USYNERGY_IS_PACKET("CIAK"))
{
// Do nothing?
// kMsgCInfoAck = "CIAK"
return;
}
else if (USYNERGY_IS_PACKET("CROP"))
{
// Do nothing?
// kMsgCResetOptions = "CROP"
return;
}
else if (USYNERGY_IS_PACKET("CINN"))
{
// Screen enter. Reply with CNOP
// kMsgCEnter = "CINN%2i%2i%4i%2i"
// Obtain the Synergy sequence number
context->m_sequenceNumber = sNetToNative32(message + 12);
context->m_isCaptured = USYNERGY_TRUE;
// Call callback
if (context->m_screenActiveCallback != 0L)
context->m_screenActiveCallback(context->m_cookie, USYNERGY_TRUE);
}
else if (USYNERGY_IS_PACKET("COUT"))
{
// Screen leave
// kMsgCLeave = "COUT"
context->m_isCaptured = USYNERGY_FALSE;
// Call callback
if (context->m_screenActiveCallback != 0L)
context->m_screenActiveCallback(context->m_cookie, USYNERGY_FALSE);
}
else if (USYNERGY_IS_PACKET("DMDN"))
{
// Mouse down
// kMsgDMouseDown = "DMDN%1i"
char btn = message[8]-1;
if (btn==2)
context->m_mouseButtonRight = USYNERGY_TRUE;
else if (btn==1)
context->m_mouseButtonMiddle = USYNERGY_TRUE;
else
context->m_mouseButtonLeft = USYNERGY_TRUE;
sSendMouseCallback(context);
}
else if (USYNERGY_IS_PACKET("DMUP"))
{
// Mouse up
// kMsgDMouseUp = "DMUP%1i"
char btn = message[8]-1;
if (btn==2)
context->m_mouseButtonRight = USYNERGY_FALSE;
else if (btn==1)
context->m_mouseButtonMiddle = USYNERGY_FALSE;
else
context->m_mouseButtonLeft = USYNERGY_FALSE;
sSendMouseCallback(context);
}
else if (USYNERGY_IS_PACKET("DMMV"))
{
// Mouse move. Reply with CNOP
// kMsgDMouseMove = "DMMV%2i%2i"
context->m_mouseX = sNetToNative16(message+8);
context->m_mouseY = sNetToNative16(message+10);
sSendMouseCallback(context);
}
else if (USYNERGY_IS_PACKET("DMWM"))
{
// Mouse wheel
// kMsgDMouseWheel = "DMWM%2i%2i"
// kMsgDMouseWheel1_0 = "DMWM%2i"
context->m_mouseWheelX += sNetToNative16(message+8);
context->m_mouseWheelY += sNetToNative16(message+10);
sSendMouseCallback(context);
}
else if (USYNERGY_IS_PACKET("DKDN"))
{
// Key down
// kMsgDKeyDown = "DKDN%2i%2i%2i"
// kMsgDKeyDown1_0 = "DKDN%2i%2i"
//uint16_t id = sNetToNative16(message+8);
uint16_t mod = sNetToNative16(message+10);
uint16_t key = sNetToNative16(message+12);
sSendKeyboardCallback(context, key, mod, USYNERGY_TRUE, USYNERGY_FALSE);
}
else if (USYNERGY_IS_PACKET("DKRP"))
{
// Key repeat
// kMsgDKeyRepeat = "DKRP%2i%2i%2i%2i"
// kMsgDKeyRepeat1_0 = "DKRP%2i%2i%2i"
uint16_t mod = sNetToNative16(message+10);
// uint16_t count = sNetToNative16(message+12);
uint16_t key = sNetToNative16(message+14);
sSendKeyboardCallback(context, key, mod, USYNERGY_TRUE, USYNERGY_TRUE);
}
else if (USYNERGY_IS_PACKET("DKUP"))
{
// Key up
// kMsgDKeyUp = "DKUP%2i%2i%2i"
// kMsgDKeyUp1_0 = "DKUP%2i%2i"
//uint16 id=Endian::sNetToNative(sbuf[4]);
uint16_t mod = sNetToNative16(message+10);
uint16_t key = sNetToNative16(message+12);
sSendKeyboardCallback(context, key, mod, USYNERGY_FALSE, USYNERGY_FALSE);
}
else if (USYNERGY_IS_PACKET("DGBT"))
{
// Joystick buttons
// kMsgDGameButtons = "DGBT%1i%2i";
uint8_t joy_num = message[8];
if (joy_num<USYNERGY_NUM_JOYSTICKS)
{
// Copy button state, then send callback
context->m_joystickButtons[joy_num] = (message[9] << 8) | message[10];
sSendJoystickCallback(context, joy_num);
}
}
else if (USYNERGY_IS_PACKET("DGST"))
{
// Joystick sticks
// kMsgDGameSticks = "DGST%1i%1i%1i%1i%1i";
uint8_t joy_num = message[8];
if (joy_num<USYNERGY_NUM_JOYSTICKS)
{
// Copy stick state, then send callback
memcpy(context->m_joystickSticks[joy_num], message+9, 4);
sSendJoystickCallback(context, joy_num);
}
}
else if (USYNERGY_IS_PACKET("DSOP"))
{
// Set options
// kMsgDSetOptions = "DSOP%4I"
}
else if (USYNERGY_IS_PACKET("CALV"))
{
// Keepalive, reply with CALV and then CNOP
// kMsgCKeepAlive = "CALV"
sAddString(context, "CALV");
sSendReply(context);
// now reply with CNOP
}
else if (USYNERGY_IS_PACKET("DCLP"))
{
// Clipboard message
// kMsgDClipboard = "DCLP%1i%4i%s"
//
// The clipboard message contains:
// 1 uint32: The size of the message
// 4 chars: The identifier ("DCLP")
// 1 uint8: The clipboard index
// 1 uint32: The sequence number. It's zero, because this message is always coming from the server?
// 1 uint32: The total size of the remaining 'string' (as per the Synergy %s string format (which is 1 uint32 for size followed by a char buffer (not necessarily null terminated)).
// 1 uint32: The number of formats present in the message
// And then 'number of formats' times the following:
// 1 uint32: The format of the clipboard data
// 1 uint32: The size n of the clipboard data
// n uint8: The clipboard data
const uint8_t * parse_msg = message+17;
uint32_t num_formats = sNetToNative32(parse_msg);
parse_msg += 4;
for (; num_formats; num_formats--)
{
// Parse clipboard format header
uint32_t format = sNetToNative32(parse_msg);
uint32_t size = sNetToNative32(parse_msg+4);
parse_msg += 8;
// Call callback
if (context->m_clipboardCallback)
context->m_clipboardCallback(context->m_cookie, format, parse_msg, size);
parse_msg += size;
}
}
else
{
// Unknown packet, could be any of these
// kMsgCNoop = "CNOP"
// kMsgCClose = "CBYE"
// kMsgCClipboard = "CCLP%1i%4i"
// kMsgCScreenSaver = "CSEC%1i"
// kMsgDKeyRepeat = "DKRP%2i%2i%2i%2i"
// kMsgDKeyRepeat1_0 = "DKRP%2i%2i%2i"
// kMsgDMouseRelMove = "DMRM%2i%2i"
// kMsgEIncompatible = "EICV%2i%2i"
// kMsgEBusy = "EBSY"
// kMsgEUnknown = "EUNK"
// kMsgEBad = "EBAD"
char buffer[64];
sprintf(buffer, "Unknown packet '%c%c%c%c'", message[4], message[5], message[6], message[7]);
sTrace(context, buffer);
return;
}
// Reply with CNOP maybe?
sAddString(context, "CNOP");
sSendReply(context);
}
#undef USYNERGY_IS_PACKET
/**
@brief Mark context as being disconnected
**/
static void sSetDisconnected(uSynergyContext *context)
{
context->m_connected = USYNERGY_FALSE;
context->m_hasReceivedHello = USYNERGY_FALSE;
context->m_isCaptured = USYNERGY_FALSE;
context->m_replyCur = context->m_replyBuffer + 4;
context->m_sequenceNumber = 0;
}
/**
@brief Update a connected context
**/
static void sUpdateContext(uSynergyContext *context)
{
/* Receive data (blocking) */
int receive_size = USYNERGY_RECEIVE_BUFFER_SIZE - context->m_receiveOfs;
int num_received = 0;
int packlen = 0;
if (context->m_receiveFunc(context->m_cookie, context->m_receiveBuffer + context->m_receiveOfs, receive_size, &num_received) == USYNERGY_FALSE)
{
/* Receive failed, let's try to reconnect */
char buffer[128];
sprintf(buffer, "Receive failed (%d bytes asked, %d bytes received), trying to reconnect in a second", receive_size, num_received);
sTrace(context, buffer);
sSetDisconnected(context);
context->m_sleepFunc(context->m_cookie, 1000);
return;
}
context->m_receiveOfs += num_received;
/* If we didn't receive any data then we're probably still polling to get connected and
therefore not getting any data back. To avoid overloading the system with a Synergy
thread that would hammer on polling, we let it rest for a bit if there's no data. */
if (num_received == 0)
context->m_sleepFunc(context->m_cookie, 500);
/* Check for timeouts */
if (context->m_hasReceivedHello)
{
uint32_t cur_time = context->m_getTimeFunc();
if (num_received == 0)
{
/* Timeout after 2 secs of inactivity (we received no CALV) */
if ((cur_time - context->m_lastMessageTime) > USYNERGY_IDLE_TIMEOUT)
sSetDisconnected(context);
}
else
context->m_lastMessageTime = cur_time;
}
/* Eat packets */
for (;;)
{
/* Grab packet length and bail out if the packet goes beyond the end of the buffer */
packlen = sNetToNative32(context->m_receiveBuffer);
if (packlen+4 > context->m_receiveOfs)
break;
/* Process message */
sProcessMessage(context, context->m_receiveBuffer);
/* Move packet to front of buffer */
memmove(context->m_receiveBuffer, context->m_receiveBuffer+packlen+4, context->m_receiveOfs-packlen-4);
context->m_receiveOfs -= packlen+4;
}
/* Throw away over-sized packets */
if (packlen > USYNERGY_RECEIVE_BUFFER_SIZE)
{
/* Oversized packet, ditch tail end */
char buffer[128];
sprintf(buffer, "Oversized packet: '%c%c%c%c' (length %d)", context->m_receiveBuffer[4], context->m_receiveBuffer[5], context->m_receiveBuffer[6], context->m_receiveBuffer[7], packlen);
sTrace(context, buffer);
num_received = context->m_receiveOfs-4; // 4 bytes for the size field
while (num_received != packlen)
{
int buffer_left = packlen - num_received;
int to_receive = buffer_left < USYNERGY_RECEIVE_BUFFER_SIZE ? buffer_left : USYNERGY_RECEIVE_BUFFER_SIZE;
int ditch_received = 0;
if (context->m_receiveFunc(context->m_cookie, context->m_receiveBuffer, to_receive, &ditch_received) == USYNERGY_FALSE)
{
/* Receive failed, let's try to reconnect */
sTrace(context, "Receive failed, trying to reconnect in a second");
sSetDisconnected(context);
context->m_sleepFunc(context->m_cookie, 1000);
break;
}
else
{
num_received += ditch_received;
}
}
context->m_receiveOfs = 0;
}
}
//---------------------------------------------------------------------------------------------------------------------
// Public interface
//---------------------------------------------------------------------------------------------------------------------
/**
@brief Initialize uSynergy context
**/
void uSynergyInit(uSynergyContext *context)
{
/* Zero memory */
memset(context, 0, sizeof(uSynergyContext));
/* Initialize to default state */
sSetDisconnected(context);
}
/**
@brief Update uSynergy
**/
void uSynergyUpdate(uSynergyContext *context)
{
if (context->m_connected)
{
/* Update context, receive data, call callbacks */
sUpdateContext(context);
}
else
{
/* Try to connect */
if (context->m_connectFunc(context->m_cookie))
context->m_connected = USYNERGY_TRUE;
}
}
/**
@brief Send clipboard data
**/
void uSynergySendClipboard(uSynergyContext *context, const char *text)
{
// Calculate maximum size that will fit in a reply packet
uint32_t overhead_size = 4 + /* Message size */
4 + /* Message ID */
1 + /* Clipboard index */
4 + /* Sequence number */
4 + /* Rest of message size (because it's a Synergy string from here on) */
4 + /* Number of clipboard formats */
4 + /* Clipboard format */
4; /* Clipboard data length */
uint32_t max_length = USYNERGY_REPLY_BUFFER_SIZE - overhead_size;
// Clip text to max length
uint32_t text_length = (uint32_t)strlen(text);
if (text_length > max_length)
{
char buffer[128];
sprintf(buffer, "Clipboard buffer too small, clipboard truncated at %d characters", max_length);
sTrace(context, buffer);
text_length = max_length;
}
// Assemble packet
sAddString(context, "DCLP");
sAddUInt8(context, 0); /* Clipboard index */
sAddUInt32(context, context->m_sequenceNumber);
sAddUInt32(context, 4+4+4+text_length); /* Rest of message size: numFormats, format, length, data */
sAddUInt32(context, 1); /* Number of formats (only text for now) */
sAddUInt32(context, USYNERGY_CLIPBOARD_FORMAT_TEXT);
sAddUInt32(context, text_length);
sAddString(context, text);
sSendReply(context);
}

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/*
uSynergy client -- Interface for the embedded Synergy client library
version 1.0.0, July 7th, 2012
Copyright (C) 2012 Synergy Si Ltd.
Copyright (c) 2012 Alex Evans
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
*/
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
//---------------------------------------------------------------------------------------------------------------------
// Configuration
//---------------------------------------------------------------------------------------------------------------------
/**
@brief Determine endianness
**/
#if defined(USYNERGY_LITTLE_ENDIAN) && defined(USYNERGY_BIG_ENDIAN)
/* Ambiguous: both endians specified */
#error "Can't define both USYNERGY_LITTLE_ENDIAN and USYNERGY_BIG_ENDIAN"
#elif !defined(USYNERGY_LITTLE_ENDIAN) && !defined(USYNERGY_BIG_ENDIAN)
/* Attempt to auto detect */
#if defined(__LITTLE_ENDIAN__) || defined(LITTLE_ENDIAN) || (_BYTE_ORDER == _LITTLE_ENDIAN)
#define USYNERGY_LITTLE_ENDIAN
#elif defined(__BIG_ENDIAN__) || defined(BIG_ENDIAN) || (_BYTE_ORDER == _BIG_ENDIAN)
#define USYNERGY_BIG_ENDIAN
#else
#error "Can't detect endian-nes, please defined either USYNERGY_LITTLE_ENDIAN or USYNERGY_BIG_ENDIAN";
#endif
#else
/* User-specified endian-nes, nothing to do for us */
#endif
//---------------------------------------------------------------------------------------------------------------------
// Types and Constants
//---------------------------------------------------------------------------------------------------------------------
/**
@brief Boolean type
**/
typedef int uSynergyBool;
#define USYNERGY_FALSE 0 /* False value */
#define USYNERGY_TRUE 1 /* True value */
/**
@brief User context type
The uSynergyCookie type is an opaque type that is used by uSynergy to communicate to the client. It is passed along to
callback functions as context.
**/
typedef struct { int ignored; } * uSynergyCookie;
/**
@brief Clipboard types
**/
enum uSynergyClipboardFormat
{
USYNERGY_CLIPBOARD_FORMAT_TEXT = 0, /* Text format, UTF-8, newline is LF */
USYNERGY_CLIPBOARD_FORMAT_BITMAP = 1, /* Bitmap format, BMP 24/32bpp, BI_RGB */
USYNERGY_CLIPBOARD_FORMAT_HTML = 2, /* HTML format, HTML fragment, UTF-8, newline is LF */
};
/**
@brief Constants and limits
**/
#define USYNERGY_NUM_JOYSTICKS 4 /* Maximum number of supported joysticks */
#define USYNERGY_PROTOCOL_MAJOR 1 /* Major protocol version */
#define USYNERGY_PROTOCOL_MINOR 4 /* Minor protocol version */
#define USYNERGY_IDLE_TIMEOUT 2000 /* Timeout in milliseconds before reconnecting */
#define USYNERGY_TRACE_BUFFER_SIZE 1024 /* Maximum length of traced message */
#define USYNERGY_REPLY_BUFFER_SIZE 1024 /* Maximum size of a reply packet */
#define USYNERGY_RECEIVE_BUFFER_SIZE 4096 /* Maximum size of an incoming packet */
/**
@brief Keyboard constants
**/
#define USYNERGY_MODIFIER_SHIFT 0x0001 /* Shift key modifier */
#define USYNERGY_MODIFIER_CTRL 0x0002 /* Ctrl key modifier */
#define USYNERGY_MODIFIER_ALT 0x0004 /* Alt key modifier */
#define USYNERGY_MODIFIER_META 0x0008 /* Meta key modifier */
#define USYNERGY_MODIFIER_WIN 0x0010 /* Windows key modifier */
#define USYNERGY_MODIFIER_ALT_GR 0x0020 /* AltGr key modifier */
#define USYNERGY_MODIFIER_LEVEL5LOCK 0x0040 /* Level5Lock key modifier */
#define USYNERGY_MODIFIER_CAPSLOCK 0x1000 /* CapsLock key modifier */
#define USYNERGY_MODIFIER_NUMLOCK 0x2000 /* NumLock key modifier */
#define USYNERGY_MODIFIER_SCROLLOCK 0x4000 /* ScrollLock key modifier */
//---------------------------------------------------------------------------------------------------------------------
// Functions and Callbacks
//---------------------------------------------------------------------------------------------------------------------
/**
@brief Connect function
This function is called when uSynergy needs to connect to the host. It doesn't imply a network implementation or
destination address, that must all be handled on the user side. The function should return USYNERGY_TRUE if a
connection was established or USYNERGY_FALSE if it could not connect.
When network errors occur (e.g. uSynergySend or uSynergyReceive fail) then the connect call will be called again
so the implementation of the function must close any old connections and clean up resources before retrying.
@param cookie Cookie supplied in the Synergy context
**/
typedef uSynergyBool (*uSynergyConnectFunc)(uSynergyCookie cookie);
/**
@brief Send function
This function is called when uSynergy needs to send something over the default connection. It should return
USYNERGY_TRUE if sending succeeded and USYNERGY_FALSE otherwise. This function should block until the send
operation is completed.
@param cookie Cookie supplied in the Synergy context
@param buffer Address of buffer to send
@param length Length of buffer to send
**/
typedef uSynergyBool (*uSynergySendFunc)(uSynergyCookie cookie, const uint8_t *buffer, int length);
/**
@brief Receive function
This function is called when uSynergy needs to receive data from the default connection. It should return
USYNERGY_TRUE if receiving data succeeded and USYNERGY_FALSE otherwise. This function should block until data
has been received and wait for data to become available. If @a outLength is set to 0 upon completion it is
assumed that the connection is alive, but still in a connecting state and needs time to settle.
@param cookie Cookie supplied in the Synergy context
@param buffer Address of buffer to receive data into
@param maxLength Maximum amount of bytes to write into the receive buffer
@param outLength Address of integer that receives the actual amount of bytes written into @a buffer
**/
typedef uSynergyBool (*uSynergyReceiveFunc)(uSynergyCookie cookie, uint8_t *buffer, int maxLength, int* outLength);
/**
@brief Thread sleep function
This function is called when uSynergy wants to suspend operation for a while before retrying an operation. It
is mostly used when a socket times out or disconnect occurs to prevent uSynergy from continuously hammering a
network connection in case the network is down.
@param cookie Cookie supplied in the Synergy context
@param timeMs Time to sleep the current thread (in milliseconds)
**/
typedef void (*uSynergySleepFunc)(uSynergyCookie cookie, int timeMs);
/**
@brief Get time function
This function is called when uSynergy needs to know the current time. This is used to determine when timeouts
have occured. The time base should be a cyclic millisecond time value.
@returns Time value in milliseconds
**/
typedef uint32_t (*uSynergyGetTimeFunc)();
/**
@brief Trace function
This function is called when uSynergy wants to trace something. It is optional to show these messages, but they
are often useful when debugging. uSynergy only traces major events like connecting and disconnecting. Usually
only a single trace is shown when the connection is established and no more trace are called.
@param cookie Cookie supplied in the Synergy context
@param text Text to be traced
**/
typedef void (*uSynergyTraceFunc)(uSynergyCookie cookie, const char *text);
/**
@brief Screen active callback
This callback is called when Synergy makes the screen active or inactive. This
callback is usually sent when the mouse enters or leaves the screen.
@param cookie Cookie supplied in the Synergy context
@param active Activation flag, 1 if the screen has become active, 0 if the screen has become inactive
**/
typedef void (*uSynergyScreenActiveCallback)(uSynergyCookie cookie, uSynergyBool active);
/**
@brief Mouse callback
This callback is called when a mouse events happens. The mouse X and Y position,
wheel and button state is communicated in the message. It's up to the user to
interpret if this is a mouse up, down, double-click or other message.
@param cookie Cookie supplied in the Synergy context
@param x Mouse X position
@param y Mouse Y position
@param wheelX Mouse wheel X position
@param wheelY Mouse wheel Y position
@param buttonLeft Left button pressed status, 0 for released, 1 for pressed
@param buttonMiddle Middle button pressed status, 0 for released, 1 for pressed
@param buttonRight Right button pressed status, 0 for released, 1 for pressed
**/
typedef void (*uSynergyMouseCallback)(uSynergyCookie cookie, uint16_t x, uint16_t y, int16_t wheelX, int16_t wheelY, uSynergyBool buttonLeft, uSynergyBool buttonRight, uSynergyBool buttonMiddle);
/**
@brief Key event callback
This callback is called when a key is pressed or released.
@param cookie Cookie supplied in the Synergy context
@param key Key code of key that was pressed or released
@param modifiers Status of modifier keys (alt, shift, etc.)
@param down Down or up status, 1 is key is pressed down, 0 if key is released (up)
@param repeat Repeat flag, 1 if the key is down because the key is repeating, 0 if the key is initially pressed by the user
**/
typedef void (*uSynergyKeyboardCallback)(uSynergyCookie cookie, uint16_t key, uint16_t modifiers, uSynergyBool down, uSynergyBool repeat);
/**
@brief Joystick event callback
This callback is called when a joystick stick or button changes. It is possible that multiple callbacks are
fired when different sticks or buttons change as these are individual messages in the packet stream. Each
callback will contain all the valid state for the different axes and buttons. The last callback received will
represent the most current joystick state.
@param cookie Cookie supplied in the Synergy context
@param joyNum Joystick number, always in the range [0 ... USYNERGY_NUM_JOYSTICKS>
@param buttons Button pressed mask
@param leftStickX Left stick X position, in range [-127 ... 127]
@param leftStickY Left stick Y position, in range [-127 ... 127]
@param rightStickX Right stick X position, in range [-127 ... 127]
@param rightStickY Right stick Y position, in range [-127 ... 127]
**/
typedef void (*uSynergyJoystickCallback)(uSynergyCookie cookie, uint8_t joyNum, uint16_t buttons, int8_t leftStickX, int8_t leftStickY, int8_t rightStickX, int8_t rightStickY);
/**
@brief Clipboard event callback
This callback is called when something is placed on the clipboard. Multiple callbacks may be fired for
multiple clipboard formats if they are supported. The data provided is read-only and may not be modified
by the application.
@param cookie Cookie supplied in the Synergy context
@param format Clipboard format
@param data Memory area containing the clipboard raw data
@param size Size of clipboard data
**/
typedef void (*uSynergyClipboardCallback)(uSynergyCookie cookie, enum uSynergyClipboardFormat format, const uint8_t *data, uint32_t size);
//---------------------------------------------------------------------------------------------------------------------
// Context
//---------------------------------------------------------------------------------------------------------------------
/**
@brief uSynergy context
**/
typedef struct
{
/* Mandatory configuration data, filled in by client */
uSynergyConnectFunc m_connectFunc; /* Connect function */
uSynergySendFunc m_sendFunc; /* Send data function */
uSynergyReceiveFunc m_receiveFunc; /* Receive data function */
uSynergySleepFunc m_sleepFunc; /* Thread sleep function */
uSynergyGetTimeFunc m_getTimeFunc; /* Get current time function */
const char* m_clientName; /* Name of Synergy Screen / Client */
uint16_t m_clientWidth; /* Width of screen */
uint16_t m_clientHeight; /* Height of screen */
/* Optional configuration data, filled in by client */
uSynergyCookie m_cookie; /* Cookie pointer passed to callback functions (can be NULL) */
uSynergyTraceFunc m_traceFunc; /* Function for tracing status (can be NULL) */
uSynergyScreenActiveCallback m_screenActiveCallback; /* Callback for entering and leaving screen */
uSynergyMouseCallback m_mouseCallback; /* Callback for mouse events */
uSynergyKeyboardCallback m_keyboardCallback; /* Callback for keyboard events */
uSynergyJoystickCallback m_joystickCallback; /* Callback for joystick events */
uSynergyClipboardCallback m_clipboardCallback; /* Callback for clipboard events */
/* State data, used internall by client, initialized by uSynergyInit() */
uSynergyBool m_connected; /* Is our socket connected? */
uSynergyBool m_hasReceivedHello; /* Have we received a 'Hello' from the server? */
uSynergyBool m_isCaptured; /* Is Synergy active (i.e. this client is receiving input messages?) */
uint32_t m_lastMessageTime; /* Time at which last message was received */
uint32_t m_sequenceNumber; /* Packet sequence number */
uint8_t m_receiveBuffer[USYNERGY_RECEIVE_BUFFER_SIZE]; /* Receive buffer */
int m_receiveOfs; /* Receive buffer offset */
uint8_t m_replyBuffer[USYNERGY_REPLY_BUFFER_SIZE]; /* Reply buffer */
uint8_t* m_replyCur; /* Write offset into reply buffer */
uint16_t m_mouseX; /* Mouse X position */
uint16_t m_mouseY; /* Mouse Y position */
int16_t m_mouseWheelX; /* Mouse wheel X position */
int16_t m_mouseWheelY; /* Mouse wheel Y position */
uSynergyBool m_mouseButtonLeft; /* Mouse left button */
uSynergyBool m_mouseButtonRight; /* Mouse right button */
uSynergyBool m_mouseButtonMiddle; /* Mouse middle button */
int8_t m_joystickSticks[USYNERGY_NUM_JOYSTICKS][4]; /* Joystick stick position in 2 axes for 2 sticks */
uint16_t m_joystickButtons[USYNERGY_NUM_JOYSTICKS]; /* Joystick button state */
} uSynergyContext;
//---------------------------------------------------------------------------------------------------------------------
// Interface
//---------------------------------------------------------------------------------------------------------------------
/**
@brief Initialize uSynergy context
This function initializes @a context for use. Call this function directly after
creating the context, before filling in any configuration data in it. Not calling
this function will cause undefined behavior.
@param context Context to be initialized
**/
extern void uSynergyInit(uSynergyContext *context);
/**
@brief Update uSynergy
This function updates uSynergy and does the bulk of the work. It does connection management,
receiving data, reconnecting after errors or timeouts and so on. It assumes that networking
operations are blocking and it can suspend the current thread if it needs to wait. It is
best practice to call uSynergyUpdate from a background thread so it is responsive.
Because uSynergy relies mostly on blocking calls it will mostly stay in thread sleep state
waiting for system mutexes and won't eat much memory.
uSynergyUpdate doesn't do any memory allocations or have any side effects beyond those of
the callbacks it calls.
@param context Context to be updated
**/
extern void uSynergyUpdate(uSynergyContext *context);
/**
@brief Send clipboard data
This function sets new clipboard data and sends it to the server. Use this function if
your client cuts or copies data onto the clipboard that it needs to share with the
server.
Currently there is only support for plaintext, but HTML and image data could be
supported with some effort.
@param context Context to send clipboard data to
@param text Text to set to the clipboard
**/
extern void uSynergySendClipboard(uSynergyContext *context, const char *text);
#ifdef __cplusplus
};
#endif

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//-----------------------------------------------------------------------------
// COMPILE-TIME OPTIONS FOR DEAR IMGUI
// Runtime options (clipboard callbacks, enabling various features, etc.) can generally be set via the ImGuiIO structure.
// You can use ImGui::SetAllocatorFunctions() before calling ImGui::CreateContext() to rewire memory allocation functions.
//-----------------------------------------------------------------------------
// A) You may edit imconfig.h (and not overwrite it when updating Dear ImGui, or maintain a patch/rebased branch with your modifications to it)
// B) or '#define IMGUI_USER_CONFIG "my_imgui_config.h"' in your project and then add directives in your own file without touching this template.
//-----------------------------------------------------------------------------
// You need to make sure that configuration settings are defined consistently _everywhere_ Dear ImGui is used, which include the imgui*.cpp
// files but also _any_ of your code that uses Dear ImGui. This is because some compile-time options have an affect on data structures.
// Defining those options in imconfig.h will ensure every compilation unit gets to see the same data structure layouts.
// Call IMGUI_CHECKVERSION() from your .cpp files to verify that the data structures your files are using are matching the ones imgui.cpp is using.
//-----------------------------------------------------------------------------
#pragma once
//---- Define assertion handler. Defaults to calling assert().
// If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so it can be used as a single statement.
//#define IM_ASSERT(_EXPR) MyAssert(_EXPR)
//#define IM_ASSERT(_EXPR) ((void)(_EXPR)) // Disable asserts
//---- Define attributes of all API symbols declarations, e.g. for DLL under Windows
// Using Dear ImGui via a shared library is not recommended, because of function call overhead and because we don't guarantee backward nor forward ABI compatibility.
// DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() + SetAllocatorFunctions()
// for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for more details.
//#define IMGUI_API __declspec( dllexport )
//#define IMGUI_API __declspec( dllimport )
//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to avoid using soon-to-be obsolete function/names.
//#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
//#define IMGUI_DISABLE_OBSOLETE_KEYIO // 1.87: disable legacy io.KeyMap[]+io.KeysDown[] in favor io.AddKeyEvent(). This will be folded into IMGUI_DISABLE_OBSOLETE_FUNCTIONS in a few versions.
//---- Disable all of Dear ImGui or don't implement standard windows/tools.
// It is very strongly recommended to NOT disable the demo windows and debug tool during development. They are extremely useful in day to day work. Please read comments in imgui_demo.cpp.
//#define IMGUI_DISABLE // Disable everything: all headers and source files will be empty.
//#define IMGUI_DISABLE_DEMO_WINDOWS // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty.
//#define IMGUI_DISABLE_DEBUG_TOOLS // Disable metrics/debugger and other debug tools: ShowMetricsWindow(), ShowDebugLogWindow() and ShowStackToolWindow() will be empty (this was called IMGUI_DISABLE_METRICS_WINDOW before 1.88).
//---- Don't implement some functions to reduce linkage requirements.
//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS // [Win32] Don't implement default clipboard handler. Won't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc. (user32.lib/.a, kernel32.lib/.a)
//#define IMGUI_ENABLE_WIN32_DEFAULT_IME_FUNCTIONS // [Win32] [Default with Visual Studio] Implement default IME handler (require imm32.lib/.a, auto-link for Visual Studio, -limm32 on command-line for MinGW)
//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS // [Win32] [Default with non-Visual Studio compilers] Don't implement default IME handler (won't require imm32.lib/.a)
//#define IMGUI_DISABLE_WIN32_FUNCTIONS // [Win32] Won't use and link with any Win32 function (clipboard, ime).
//#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices', this is why this is not the default).
//#define IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself (e.g. if you don't want to link with vsnprintf)
//#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
//#define IMGUI_DISABLE_FILE_FUNCTIONS // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle at all (replace them with dummies)
//#define IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle so you can implement them yourself if you don't want to link with fopen/fclose/fread/fwrite. This will also disable the LogToTTY() function.
//#define IMGUI_DISABLE_DEFAULT_ALLOCATORS // Don't implement default allocators calling malloc()/free() to avoid linking with them. You will need to call ImGui::SetAllocatorFunctions().
//#define IMGUI_DISABLE_SSE // Disable use of SSE intrinsics even if available
//---- Include imgui_user.h at the end of imgui.h as a convenience
//#define IMGUI_INCLUDE_IMGUI_USER_H
//---- Pack colors to BGRA8 instead of RGBA8 (to avoid converting from one to another)
//#define IMGUI_USE_BGRA_PACKED_COLOR
//---- Use 32-bit for ImWchar (default is 16-bit) to support unicode planes 1-16. (e.g. point beyond 0xFFFF like emoticons, dingbats, symbols, shapes, ancient languages, etc...)
//#define IMGUI_USE_WCHAR32
//---- Avoid multiple STB libraries implementations, or redefine path/filenames to prioritize another version
// By default the embedded implementations are declared static and not available outside of Dear ImGui sources files.
//#define IMGUI_STB_TRUETYPE_FILENAME "my_folder/stb_truetype.h"
//#define IMGUI_STB_RECT_PACK_FILENAME "my_folder/stb_rect_pack.h"
//#define IMGUI_STB_SPRINTF_FILENAME "my_folder/stb_sprintf.h" // only used if enabled
//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
//---- Use stb_sprintf.h for a faster implementation of vsnprintf instead of the one from libc (unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined)
// Compatibility checks of arguments and formats done by clang and GCC will be disabled in order to support the extra formats provided by stb_sprintf.h.
//#define IMGUI_USE_STB_SPRINTF
//---- Use FreeType to build and rasterize the font atlas (instead of stb_truetype which is embedded by default in Dear ImGui)
// Requires FreeType headers to be available in the include path. Requires program to be compiled with 'misc/freetype/imgui_freetype.cpp' (in this repository) + the FreeType library (not provided).
// On Windows you may use vcpkg with 'vcpkg install freetype --triplet=x64-windows' + 'vcpkg integrate install'.
//#define IMGUI_ENABLE_FREETYPE
//---- Use stb_truetype to build and rasterize the font atlas (default)
// The only purpose of this define is if you want force compilation of the stb_truetype backend ALONG with the FreeType backend.
//#define IMGUI_ENABLE_STB_TRUETYPE
//---- Define constructor and implicit cast operators to convert back<>forth between your math types and ImVec2/ImVec4.
// This will be inlined as part of ImVec2 and ImVec4 class declarations.
/*
#define IM_VEC2_CLASS_EXTRA \
constexpr ImVec2(const MyVec2& f) : x(f.x), y(f.y) {} \
operator MyVec2() const { return MyVec2(x,y); }
#define IM_VEC4_CLASS_EXTRA \
constexpr ImVec4(const MyVec4& f) : x(f.x), y(f.y), z(f.z), w(f.w) {} \
operator MyVec4() const { return MyVec4(x,y,z,w); }
*/
//---- Use 32-bit vertex indices (default is 16-bit) is one way to allow large meshes with more than 64K vertices.
// Your renderer backend will need to support it (most example renderer backends support both 16/32-bit indices).
// Another way to allow large meshes while keeping 16-bit indices is to handle ImDrawCmd::VtxOffset in your renderer.
// Read about ImGuiBackendFlags_RendererHasVtxOffset for details.
//#define ImDrawIdx unsigned int
//---- Override ImDrawCallback signature (will need to modify renderer backends accordingly)
//struct ImDrawList;
//struct ImDrawCmd;
//typedef void (*MyImDrawCallback)(const ImDrawList* draw_list, const ImDrawCmd* cmd, void* my_renderer_user_data);
//#define ImDrawCallback MyImDrawCallback
//---- Debug Tools: Macro to break in Debugger
// (use 'Metrics->Tools->Item Picker' to pick widgets with the mouse and break into them for easy debugging.)
//#define IM_DEBUG_BREAK IM_ASSERT(0)
//#define IM_DEBUG_BREAK __debugbreak()
//---- Debug Tools: Enable slower asserts
//#define IMGUI_DEBUG_PARANOID
//---- Tip: You can add extra functions within the ImGui:: namespace, here or in your own headers files.
/*
namespace ImGui
{
void MyFunction(const char* name, const MyMatrix44& v);
}
*/

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// [DEAR IMGUI]
// This is a slightly modified version of stb_rect_pack.h 1.01.
// Grep for [DEAR IMGUI] to find the changes.
//
// stb_rect_pack.h - v1.01 - public domain - rectangle packing
// Sean Barrett 2014
//
// Useful for e.g. packing rectangular textures into an atlas.
// Does not do rotation.
//
// Before #including,
//
// #define STB_RECT_PACK_IMPLEMENTATION
//
// in the file that you want to have the implementation.
//
// Not necessarily the awesomest packing method, but better than
// the totally naive one in stb_truetype (which is primarily what
// this is meant to replace).
//
// Has only had a few tests run, may have issues.
//
// More docs to come.
//
// No memory allocations; uses qsort() and assert() from stdlib.
// Can override those by defining STBRP_SORT and STBRP_ASSERT.
//
// This library currently uses the Skyline Bottom-Left algorithm.
//
// Please note: better rectangle packers are welcome! Please
// implement them to the same API, but with a different init
// function.
//
// Credits
//
// Library
// Sean Barrett
// Minor features
// Martins Mozeiko
// github:IntellectualKitty
//
// Bugfixes / warning fixes
// Jeremy Jaussaud
// Fabian Giesen
//
// Version history:
//
// 1.01 (2021-07-11) always use large rect mode, expose STBRP__MAXVAL in public section
// 1.00 (2019-02-25) avoid small space waste; gracefully fail too-wide rectangles
// 0.99 (2019-02-07) warning fixes
// 0.11 (2017-03-03) return packing success/fail result
// 0.10 (2016-10-25) remove cast-away-const to avoid warnings
// 0.09 (2016-08-27) fix compiler warnings
// 0.08 (2015-09-13) really fix bug with empty rects (w=0 or h=0)
// 0.07 (2015-09-13) fix bug with empty rects (w=0 or h=0)
// 0.06 (2015-04-15) added STBRP_SORT to allow replacing qsort
// 0.05: added STBRP_ASSERT to allow replacing assert
// 0.04: fixed minor bug in STBRP_LARGE_RECTS support
// 0.01: initial release
//
// LICENSE
//
// See end of file for license information.
//////////////////////////////////////////////////////////////////////////////
//
// INCLUDE SECTION
//
#ifndef STB_INCLUDE_STB_RECT_PACK_H
#define STB_INCLUDE_STB_RECT_PACK_H
#define STB_RECT_PACK_VERSION 1
#ifdef STBRP_STATIC
#define STBRP_DEF static
#else
#define STBRP_DEF extern
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef struct stbrp_context stbrp_context;
typedef struct stbrp_node stbrp_node;
typedef struct stbrp_rect stbrp_rect;
typedef int stbrp_coord;
#define STBRP__MAXVAL 0x7fffffff
// Mostly for internal use, but this is the maximum supported coordinate value.
STBRP_DEF int stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects);
// Assign packed locations to rectangles. The rectangles are of type
// 'stbrp_rect' defined below, stored in the array 'rects', and there
// are 'num_rects' many of them.
//
// Rectangles which are successfully packed have the 'was_packed' flag
// set to a non-zero value and 'x' and 'y' store the minimum location
// on each axis (i.e. bottom-left in cartesian coordinates, top-left
// if you imagine y increasing downwards). Rectangles which do not fit
// have the 'was_packed' flag set to 0.
//
// You should not try to access the 'rects' array from another thread
// while this function is running, as the function temporarily reorders
// the array while it executes.
//
// To pack into another rectangle, you need to call stbrp_init_target
// again. To continue packing into the same rectangle, you can call
// this function again. Calling this multiple times with multiple rect
// arrays will probably produce worse packing results than calling it
// a single time with the full rectangle array, but the option is
// available.
//
// The function returns 1 if all of the rectangles were successfully
// packed and 0 otherwise.
struct stbrp_rect
{
// reserved for your use:
int id;
// input:
stbrp_coord w, h;
// output:
stbrp_coord x, y;
int was_packed; // non-zero if valid packing
}; // 16 bytes, nominally
STBRP_DEF void stbrp_init_target (stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes);
// Initialize a rectangle packer to:
// pack a rectangle that is 'width' by 'height' in dimensions
// using temporary storage provided by the array 'nodes', which is 'num_nodes' long
//
// You must call this function every time you start packing into a new target.
//
// There is no "shutdown" function. The 'nodes' memory must stay valid for
// the following stbrp_pack_rects() call (or calls), but can be freed after
// the call (or calls) finish.
//
// Note: to guarantee best results, either:
// 1. make sure 'num_nodes' >= 'width'
// or 2. call stbrp_allow_out_of_mem() defined below with 'allow_out_of_mem = 1'
//
// If you don't do either of the above things, widths will be quantized to multiples
// of small integers to guarantee the algorithm doesn't run out of temporary storage.
//
// If you do #2, then the non-quantized algorithm will be used, but the algorithm
// may run out of temporary storage and be unable to pack some rectangles.
STBRP_DEF void stbrp_setup_allow_out_of_mem (stbrp_context *context, int allow_out_of_mem);
// Optionally call this function after init but before doing any packing to
// change the handling of the out-of-temp-memory scenario, described above.
// If you call init again, this will be reset to the default (false).
STBRP_DEF void stbrp_setup_heuristic (stbrp_context *context, int heuristic);
// Optionally select which packing heuristic the library should use. Different
// heuristics will produce better/worse results for different data sets.
// If you call init again, this will be reset to the default.
enum
{
STBRP_HEURISTIC_Skyline_default=0,
STBRP_HEURISTIC_Skyline_BL_sortHeight = STBRP_HEURISTIC_Skyline_default,
STBRP_HEURISTIC_Skyline_BF_sortHeight
};
//////////////////////////////////////////////////////////////////////////////
//
// the details of the following structures don't matter to you, but they must
// be visible so you can handle the memory allocations for them
struct stbrp_node
{
stbrp_coord x,y;
stbrp_node *next;
};
struct stbrp_context
{
int width;
int height;
int align;
int init_mode;
int heuristic;
int num_nodes;
stbrp_node *active_head;
stbrp_node *free_head;
stbrp_node extra[2]; // we allocate two extra nodes so optimal user-node-count is 'width' not 'width+2'
};
#ifdef __cplusplus
}
#endif
#endif
//////////////////////////////////////////////////////////////////////////////
//
// IMPLEMENTATION SECTION
//
#ifdef STB_RECT_PACK_IMPLEMENTATION
#ifndef STBRP_SORT
#include <stdlib.h>
#define STBRP_SORT qsort
#endif
#ifndef STBRP_ASSERT
#include <assert.h>
#define STBRP_ASSERT assert
#endif
#ifdef _MSC_VER
#define STBRP__NOTUSED(v) (void)(v)
#define STBRP__CDECL __cdecl
#else
#define STBRP__NOTUSED(v) (void)sizeof(v)
#define STBRP__CDECL
#endif
enum
{
STBRP__INIT_skyline = 1
};
STBRP_DEF void stbrp_setup_heuristic(stbrp_context *context, int heuristic)
{
switch (context->init_mode) {
case STBRP__INIT_skyline:
STBRP_ASSERT(heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight || heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight);
context->heuristic = heuristic;
break;
default:
STBRP_ASSERT(0);
}
}
STBRP_DEF void stbrp_setup_allow_out_of_mem(stbrp_context *context, int allow_out_of_mem)
{
if (allow_out_of_mem)
// if it's ok to run out of memory, then don't bother aligning them;
// this gives better packing, but may fail due to OOM (even though
// the rectangles easily fit). @TODO a smarter approach would be to only
// quantize once we've hit OOM, then we could get rid of this parameter.
context->align = 1;
else {
// if it's not ok to run out of memory, then quantize the widths
// so that num_nodes is always enough nodes.
//
// I.e. num_nodes * align >= width
// align >= width / num_nodes
// align = ceil(width/num_nodes)
context->align = (context->width + context->num_nodes-1) / context->num_nodes;
}
}
STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes)
{
int i;
for (i=0; i < num_nodes-1; ++i)
nodes[i].next = &nodes[i+1];
nodes[i].next = NULL;
context->init_mode = STBRP__INIT_skyline;
context->heuristic = STBRP_HEURISTIC_Skyline_default;
context->free_head = &nodes[0];
context->active_head = &context->extra[0];
context->width = width;
context->height = height;
context->num_nodes = num_nodes;
stbrp_setup_allow_out_of_mem(context, 0);
// node 0 is the full width, node 1 is the sentinel (lets us not store width explicitly)
context->extra[0].x = 0;
context->extra[0].y = 0;
context->extra[0].next = &context->extra[1];
context->extra[1].x = (stbrp_coord) width;
context->extra[1].y = (1<<30);
context->extra[1].next = NULL;
}
// find minimum y position if it starts at x1
static int stbrp__skyline_find_min_y(stbrp_context *c, stbrp_node *first, int x0, int width, int *pwaste)
{
stbrp_node *node = first;
int x1 = x0 + width;
int min_y, visited_width, waste_area;
STBRP__NOTUSED(c);
STBRP_ASSERT(first->x <= x0);
#if 0
// skip in case we're past the node
while (node->next->x <= x0)
++node;
#else
STBRP_ASSERT(node->next->x > x0); // we ended up handling this in the caller for efficiency
#endif
STBRP_ASSERT(node->x <= x0);
min_y = 0;
waste_area = 0;
visited_width = 0;
while (node->x < x1) {
if (node->y > min_y) {
// raise min_y higher.
// we've accounted for all waste up to min_y,
// but we'll now add more waste for everything we've visted
waste_area += visited_width * (node->y - min_y);
min_y = node->y;
// the first time through, visited_width might be reduced
if (node->x < x0)
visited_width += node->next->x - x0;
else
visited_width += node->next->x - node->x;
} else {
// add waste area
int under_width = node->next->x - node->x;
if (under_width + visited_width > width)
under_width = width - visited_width;
waste_area += under_width * (min_y - node->y);
visited_width += under_width;
}
node = node->next;
}
*pwaste = waste_area;
return min_y;
}
typedef struct
{
int x,y;
stbrp_node **prev_link;
} stbrp__findresult;
static stbrp__findresult stbrp__skyline_find_best_pos(stbrp_context *c, int width, int height)
{
int best_waste = (1<<30), best_x, best_y = (1 << 30);
stbrp__findresult fr;
stbrp_node **prev, *node, *tail, **best = NULL;
// align to multiple of c->align
width = (width + c->align - 1);
width -= width % c->align;
STBRP_ASSERT(width % c->align == 0);
// if it can't possibly fit, bail immediately
if (width > c->width || height > c->height) {
fr.prev_link = NULL;
fr.x = fr.y = 0;
return fr;
}
node = c->active_head;
prev = &c->active_head;
while (node->x + width <= c->width) {
int y,waste;
y = stbrp__skyline_find_min_y(c, node, node->x, width, &waste);
if (c->heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight) { // actually just want to test BL
// bottom left
if (y < best_y) {
best_y = y;
best = prev;
}
} else {
// best-fit
if (y + height <= c->height) {
// can only use it if it first vertically
if (y < best_y || (y == best_y && waste < best_waste)) {
best_y = y;
best_waste = waste;
best = prev;
}
}
}
prev = &node->next;
node = node->next;
}
best_x = (best == NULL) ? 0 : (*best)->x;
// if doing best-fit (BF), we also have to try aligning right edge to each node position
//
// e.g, if fitting
//
// ____________________
// |____________________|
//
// into
//
// | |
// | ____________|
// |____________|
//
// then right-aligned reduces waste, but bottom-left BL is always chooses left-aligned
//
// This makes BF take about 2x the time
if (c->heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight) {
tail = c->active_head;
node = c->active_head;
prev = &c->active_head;
// find first node that's admissible
while (tail->x < width)
tail = tail->next;
while (tail) {
int xpos = tail->x - width;
int y,waste;
STBRP_ASSERT(xpos >= 0);
// find the left position that matches this
while (node->next->x <= xpos) {
prev = &node->next;
node = node->next;
}
STBRP_ASSERT(node->next->x > xpos && node->x <= xpos);
y = stbrp__skyline_find_min_y(c, node, xpos, width, &waste);
if (y + height <= c->height) {
if (y <= best_y) {
if (y < best_y || waste < best_waste || (waste==best_waste && xpos < best_x)) {
best_x = xpos;
//STBRP_ASSERT(y <= best_y); [DEAR IMGUI]
best_y = y;
best_waste = waste;
best = prev;
}
}
}
tail = tail->next;
}
}
fr.prev_link = best;
fr.x = best_x;
fr.y = best_y;
return fr;
}
static stbrp__findresult stbrp__skyline_pack_rectangle(stbrp_context *context, int width, int height)
{
// find best position according to heuristic
stbrp__findresult res = stbrp__skyline_find_best_pos(context, width, height);
stbrp_node *node, *cur;
// bail if:
// 1. it failed
// 2. the best node doesn't fit (we don't always check this)
// 3. we're out of memory
if (res.prev_link == NULL || res.y + height > context->height || context->free_head == NULL) {
res.prev_link = NULL;
return res;
}
// on success, create new node
node = context->free_head;
node->x = (stbrp_coord) res.x;
node->y = (stbrp_coord) (res.y + height);
context->free_head = node->next;
// insert the new node into the right starting point, and
// let 'cur' point to the remaining nodes needing to be
// stiched back in
cur = *res.prev_link;
if (cur->x < res.x) {
// preserve the existing one, so start testing with the next one
stbrp_node *next = cur->next;
cur->next = node;
cur = next;
} else {
*res.prev_link = node;
}
// from here, traverse cur and free the nodes, until we get to one
// that shouldn't be freed
while (cur->next && cur->next->x <= res.x + width) {
stbrp_node *next = cur->next;
// move the current node to the free list
cur->next = context->free_head;
context->free_head = cur;
cur = next;
}
// stitch the list back in
node->next = cur;
if (cur->x < res.x + width)
cur->x = (stbrp_coord) (res.x + width);
#ifdef _DEBUG
cur = context->active_head;
while (cur->x < context->width) {
STBRP_ASSERT(cur->x < cur->next->x);
cur = cur->next;
}
STBRP_ASSERT(cur->next == NULL);
{
int count=0;
cur = context->active_head;
while (cur) {
cur = cur->next;
++count;
}
cur = context->free_head;
while (cur) {
cur = cur->next;
++count;
}
STBRP_ASSERT(count == context->num_nodes+2);
}
#endif
return res;
}
static int STBRP__CDECL rect_height_compare(const void *a, const void *b)
{
const stbrp_rect *p = (const stbrp_rect *) a;
const stbrp_rect *q = (const stbrp_rect *) b;
if (p->h > q->h)
return -1;
if (p->h < q->h)
return 1;
return (p->w > q->w) ? -1 : (p->w < q->w);
}
static int STBRP__CDECL rect_original_order(const void *a, const void *b)
{
const stbrp_rect *p = (const stbrp_rect *) a;
const stbrp_rect *q = (const stbrp_rect *) b;
return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed);
}
STBRP_DEF int stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
{
int i, all_rects_packed = 1;
// we use the 'was_packed' field internally to allow sorting/unsorting
for (i=0; i < num_rects; ++i) {
rects[i].was_packed = i;
}
// sort according to heuristic
STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_height_compare);
for (i=0; i < num_rects; ++i) {
if (rects[i].w == 0 || rects[i].h == 0) {
rects[i].x = rects[i].y = 0; // empty rect needs no space
} else {
stbrp__findresult fr = stbrp__skyline_pack_rectangle(context, rects[i].w, rects[i].h);
if (fr.prev_link) {
rects[i].x = (stbrp_coord) fr.x;
rects[i].y = (stbrp_coord) fr.y;
} else {
rects[i].x = rects[i].y = STBRP__MAXVAL;
}
}
}
// unsort
STBRP_SORT(rects, num_rects, sizeof(rects[0]), rect_original_order);
// set was_packed flags and all_rects_packed status
for (i=0; i < num_rects; ++i) {
rects[i].was_packed = !(rects[i].x == STBRP__MAXVAL && rects[i].y == STBRP__MAXVAL);
if (!rects[i].was_packed)
all_rects_packed = 0;
}
// return the all_rects_packed status
return all_rects_packed;
}
#endif
/*
------------------------------------------------------------------------------
This software is available under 2 licenses -- choose whichever you prefer.
------------------------------------------------------------------------------
ALTERNATIVE A - MIT License
Copyright (c) 2017 Sean Barrett
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
------------------------------------------------------------------------------
ALTERNATIVE B - Public Domain (www.unlicense.org)
This is free and unencumbered software released into the public domain.
Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
software, either in source code form or as a compiled binary, for any purpose,
commercial or non-commercial, and by any means.
In jurisdictions that recognize copyright laws, the author or authors of this
software dedicate any and all copyright interest in the software to the public
domain. We make this dedication for the benefit of the public at large and to
the detriment of our heirs and successors. We intend this dedication to be an
overt act of relinquishment in perpetuity of all present and future rights to
this software under copyright law.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
------------------------------------------------------------------------------
*/

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misc/cpp/
InputText() wrappers for C++ standard library (STL) type: std::string.
This is also an example of how you may wrap your own similar types.
misc/debuggers/
Helper files for popular debuggers.
With the .natvis file, types like ImVector<> will be displayed nicely in Visual Studio debugger.
misc/fonts/
Fonts loading/merging instructions (e.g. How to handle glyph ranges, how to merge icons fonts).
Command line tool "binary_to_compressed_c" to create compressed arrays to embed data in source code.
Suggested fonts and links.
misc/freetype/
Font atlas builder/rasterizer using FreeType instead of stb_truetype.
Benefit from better FreeType rasterization, in particular for small fonts.
misc/single_file/
Single-file header stub.
We use this to validate compiling all *.cpp files in a same compilation unit.
Users of that technique (also called "Unity builds") can generally provide this themselves,
so we don't really recommend you use this in your projects.

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imgui_stdlib.h + imgui_stdlib.cpp
InputText() wrappers for C++ standard library (STL) type: std::string.
This is also an example of how you may wrap your own similar types.
imgui_scoped.h
[Experimental, not currently in main repository]
Additional header file with some RAII-style wrappers for common Dear ImGui functions.
Try by merging: https://github.com/ocornut/imgui/pull/2197
Discuss at: https://github.com/ocornut/imgui/issues/2096
See more C++ related extension on Wiki
https://github.com/ocornut/imgui/wiki/Useful-Extensions#cness

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// dear imgui: wrappers for C++ standard library (STL) types (std::string, etc.)
// This is also an example of how you may wrap your own similar types.
// Changelog:
// - v0.10: Initial version. Added InputText() / InputTextMultiline() calls with std::string
#include "imgui.h"
#include "imgui_stdlib.h"
struct InputTextCallback_UserData
{
std::string* Str;
ImGuiInputTextCallback ChainCallback;
void* ChainCallbackUserData;
};
static int InputTextCallback(ImGuiInputTextCallbackData* data)
{
InputTextCallback_UserData* user_data = (InputTextCallback_UserData*)data->UserData;
if (data->EventFlag == ImGuiInputTextFlags_CallbackResize)
{
// Resize string callback
// If for some reason we refuse the new length (BufTextLen) and/or capacity (BufSize) we need to set them back to what we want.
std::string* str = user_data->Str;
IM_ASSERT(data->Buf == str->c_str());
str->resize(data->BufTextLen);
data->Buf = (char*)str->c_str();
}
else if (user_data->ChainCallback)
{
// Forward to user callback, if any
data->UserData = user_data->ChainCallbackUserData;
return user_data->ChainCallback(data);
}
return 0;
}
bool ImGui::InputText(const char* label, std::string* str, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
{
IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);
flags |= ImGuiInputTextFlags_CallbackResize;
InputTextCallback_UserData cb_user_data;
cb_user_data.Str = str;
cb_user_data.ChainCallback = callback;
cb_user_data.ChainCallbackUserData = user_data;
return InputText(label, (char*)str->c_str(), str->capacity() + 1, flags, InputTextCallback, &cb_user_data);
}
bool ImGui::InputTextMultiline(const char* label, std::string* str, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
{
IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);
flags |= ImGuiInputTextFlags_CallbackResize;
InputTextCallback_UserData cb_user_data;
cb_user_data.Str = str;
cb_user_data.ChainCallback = callback;
cb_user_data.ChainCallbackUserData = user_data;
return InputTextMultiline(label, (char*)str->c_str(), str->capacity() + 1, size, flags, InputTextCallback, &cb_user_data);
}
bool ImGui::InputTextWithHint(const char* label, const char* hint, std::string* str, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data)
{
IM_ASSERT((flags & ImGuiInputTextFlags_CallbackResize) == 0);
flags |= ImGuiInputTextFlags_CallbackResize;
InputTextCallback_UserData cb_user_data;
cb_user_data.Str = str;
cb_user_data.ChainCallback = callback;
cb_user_data.ChainCallbackUserData = user_data;
return InputTextWithHint(label, hint, (char*)str->c_str(), str->capacity() + 1, flags, InputTextCallback, &cb_user_data);
}

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// dear imgui: wrappers for C++ standard library (STL) types (std::string, etc.)
// This is also an example of how you may wrap your own similar types.
// Changelog:
// - v0.10: Initial version. Added InputText() / InputTextMultiline() calls with std::string
#pragma once
#include <string>
namespace ImGui
{
// ImGui::InputText() with std::string
// Because text input needs dynamic resizing, we need to setup a callback to grow the capacity
IMGUI_API bool InputText(const char* label, std::string* str, ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = NULL, void* user_data = NULL);
IMGUI_API bool InputTextMultiline(const char* label, std::string* str, const ImVec2& size = ImVec2(0, 0), ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = NULL, void* user_data = NULL);
IMGUI_API bool InputTextWithHint(const char* label, const char* hint, std::string* str, ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = NULL, void* user_data = NULL);
}

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HELPER FILES FOR POPULAR DEBUGGERS
imgui.gdb
GDB: disable stepping into trivial functions.
(read comments inside file for details)
imgui.natstepfilter
Visual Studio Debugger: disable stepping into trivial functions.
(read comments inside file for details)
imgui.natvis
Visual Studio Debugger: describe Dear ImGui types for better display.
With this, types like ImVector<> will be displayed nicely in the debugger.
(read comments inside file for details)

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# GDB configuration to aid debugging experience
# To enable these customizations edit $HOME/.gdbinit (or ./.gdbinit if local gdbinit is enabled) and add:
# add-auto-load-safe-path /path/to/imgui.gdb
# source /path/to/imgui.gdb
#
# More Information at:
# * https://sourceware.org/gdb/current/onlinedocs/gdb/gdbinit-man.html
# * https://sourceware.org/gdb/current/onlinedocs/gdb/Init-File-in-the-Current-Directory.html#Init-File-in-the-Current-Directory
# Disable stepping into trivial functions
skip -rfunction Im(Vec2|Vec4|Strv|Vector|Span)::.+

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<?xml version="1.0" encoding="utf-8"?>
<!--
.natstepfilter file for Visual Studio debugger.
Purpose: instruct debugger to skip some functions when using StepInto (F11)
To enable:
* copy in %USERPROFILE%\Documents\Visual Studio XXXX\Visualizers (current user)
* or copy in %VsInstallDirectory%\Common7\Packages\Debugger\Visualizers (all users)
If you have multiple VS version installed, the version that matters is the one you are using the IDE/debugger of (not the compiling toolset).
This is supported since Visual Studio 2012.
Unfortunately, unlike .natvis files, it isn't yet possible to include this file in your project :(
You may upvote this: https://developercommunity.visualstudio.com/t/allow-natstepfilter-and-natjmc-to-be-included-as-p/561718
More information at: https://docs.microsoft.com/en-us/visualstudio/debugger/just-my-code?view=vs-2019#BKMK_C___Just_My_Code
-->
<StepFilter xmlns="http://schemas.microsoft.com/vstudio/debugger/natstepfilter/2010">
<!-- Disable stepping into trivial functions -->
<Function>
<Name>(ImVec2|ImVec4|ImStrv)::.+</Name>
<Action>NoStepInto</Action>
</Function>
<Function>
<Name>(ImVector|ImSpan).*::operator.+</Name>
<Action>NoStepInto</Action>
</Function>
</StepFilter>

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<?xml version="1.0" encoding="utf-8"?>
<!--
.natvis file for Visual Studio debugger.
Purpose: provide nicer views on data types used by Dear ImGui.
To enable:
* include file in your VS project (most recommended: not intrusive and always kept up to date!)
* or copy in %USERPROFILE%\Documents\Visual Studio XXXX\Visualizers (current user)
* or copy in %VsInstallDirectory%\Common7\Packages\Debugger\Visualizers (all users)
More information at: https://docs.microsoft.com/en-us/visualstudio/debugger/create-custom-views-of-native-objects?view=vs-2019
-->
<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
<Type Name="ImVector&lt;*&gt;">
<DisplayString>{{Size={Size} Capacity={Capacity}}}</DisplayString>
<Expand>
<ArrayItems>
<Size>Size</Size>
<ValuePointer>Data</ValuePointer>
</ArrayItems>
</Expand>
</Type>
<Type Name="ImSpan&lt;*&gt;">
<DisplayString>{{Size={DataEnd-Data} }}</DisplayString>
<Expand>
<ArrayItems>
<Size>DataEnd-Data</Size>
<ValuePointer>Data</ValuePointer>
</ArrayItems>
</Expand>
</Type>
<Type Name="ImVec2">
<DisplayString>{{x={x,g} y={y,g}}}</DisplayString>
</Type>
<Type Name="ImVec4">
<DisplayString>{{x={x,g} y={y,g} z={z,g} w={w,g}}}</DisplayString>
</Type>
<Type Name="ImRect">
<DisplayString>{{Min=({Min.x,g} {Min.y,g}) Max=({Max.x,g} {Max.y,g}) Size=({Max.x-Min.x,g} {Max.y-Min.y,g})}}</DisplayString>
<Expand>
<Item Name="Min">Min</Item>
<Item Name="Max">Max</Item>
<Item Name="[Width]">Max.x - Min.x</Item>
<Item Name="[Height]">Max.y - Min.y</Item>
</Expand>
</Type>
<Type Name="ImGuiWindow">
<DisplayString>{{Name {Name,s} Active {(Active||WasActive)?1:0,d} Child {(Flags &amp; 0x01000000)?1:0,d} Popup {(Flags &amp; 0x04000000)?1:0,d} Hidden {(Hidden)?1:0,d}}</DisplayString>
</Type>
</AutoVisualizer>

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# imgui_freetype
Build font atlases using FreeType instead of stb_truetype (which is the default font rasterizer).
<br>by @vuhdo, @mikesart, @ocornut.
### Usage
1. Get latest FreeType binaries or build yourself (under Windows you may use vcpkg with `vcpkg install freetype --triplet=x64-windows`, `vcpkg integrate install`).
2. Add imgui_freetype.h/cpp alongside your project files.
3. Add `#define IMGUI_ENABLE_FREETYPE` in your [imconfig.h](https://github.com/ocornut/imgui/blob/master/imconfig.h) file
### About Gamma Correct Blending
FreeType assumes blending in linear space rather than gamma space.
See FreeType note for [FT_Render_Glyph](https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#FT_Render_Glyph).
For correct results you need to be using sRGB and convert to linear space in the pixel shader output.
The default Dear ImGui styles will be impacted by this change (alpha values will need tweaking).
### Testbed for toying with settings (for developers)
See https://gist.github.com/ocornut/b3a9ecf13502fd818799a452969649ad
### Known issues
- Oversampling settins are ignored but also not so much necessary with the higher quality rendering.
### Comparison
Small, thin anti-aliased fonts typically benefit a lot from FreeType's hinting:
![comparing_font_rasterizers](https://user-images.githubusercontent.com/8225057/107550178-fef87f00-6bd0-11eb-8d09-e2edb2f0ccfc.gif)
### Colorful glyphs/emojis
You can use the `ImGuiFreeTypeBuilderFlags_LoadColor` flag to load certain colorful glyphs. See the
["Using Colorful Glyphs/Emojis"](https://github.com/ocornut/imgui/blob/master/docs/FONTS.md#using-colorful-glyphsemojis) section of FONTS.md.
![colored glyphs](https://user-images.githubusercontent.com/8225057/106171241-9dc4ba80-6191-11eb-8a69-ca1467b206d1.png)

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// dear imgui: FreeType font builder (used as a replacement for the stb_truetype builder)
// (code)
// Get the latest version at https://github.com/ocornut/imgui/tree/master/misc/freetype
// Original code by @vuhdo (Aleksei Skriabin). Improvements by @mikesart. Maintained since 2019 by @ocornut.
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2023/01/04: fixed a packing issue which in some occurrences would prevent large amount of glyphs from being packed correctly.
// 2021/08/23: fixed crash when FT_Render_Glyph() fails to render a glyph and returns NULL.
// 2021/03/05: added ImGuiFreeTypeBuilderFlags_Bitmap to load bitmap glyphs.
// 2021/03/02: set 'atlas->TexPixelsUseColors = true' to help some backends with deciding of a prefered texture format.
// 2021/01/28: added support for color-layered glyphs via ImGuiFreeTypeBuilderFlags_LoadColor (require Freetype 2.10+).
// 2021/01/26: simplified integration by using '#define IMGUI_ENABLE_FREETYPE'.
// renamed ImGuiFreeType::XXX flags to ImGuiFreeTypeBuilderFlags_XXX for consistency with other API. removed ImGuiFreeType::BuildFontAtlas().
// 2020/06/04: fix for rare case where FT_Get_Char_Index() succeed but FT_Load_Glyph() fails.
// 2019/02/09: added RasterizerFlags::Monochrome flag to disable font anti-aliasing (combine with ::MonoHinting for best results!)
// 2019/01/15: added support for imgui allocators + added FreeType only override function SetAllocatorFunctions().
// 2019/01/10: re-factored to match big update in STB builder. fixed texture height waste. fixed redundant glyphs when merging. support for glyph padding.
// 2018/06/08: added support for ImFontConfig::GlyphMinAdvanceX, GlyphMaxAdvanceX.
// 2018/02/04: moved to main imgui repository (away from http://www.github.com/ocornut/imgui_club)
// 2018/01/22: fix for addition of ImFontAtlas::TexUvscale member.
// 2017/10/22: minor inconsequential change to match change in master (removed an unnecessary statement).
// 2017/09/26: fixes for imgui internal changes.
// 2017/08/26: cleanup, optimizations, support for ImFontConfig::RasterizerFlags, ImFontConfig::RasterizerMultiply.
// 2017/08/16: imported from https://github.com/Vuhdo/imgui_freetype into http://www.github.com/ocornut/imgui_club, updated for latest changes in ImFontAtlas, minor tweaks.
// About Gamma Correct Blending:
// - FreeType assumes blending in linear space rather than gamma space.
// - See https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#FT_Render_Glyph
// - For correct results you need to be using sRGB and convert to linear space in the pixel shader output.
// - The default dear imgui styles will be impacted by this change (alpha values will need tweaking).
// FIXME: cfg.OversampleH, OversampleV are not supported (but perhaps not so necessary with this rasterizer).
#include "imgui_freetype.h"
#include "imgui_internal.h" // ImMin,ImMax,ImFontAtlasBuild*,
#include <stdint.h>
#include <ft2build.h>
#include FT_FREETYPE_H // <freetype/freetype.h>
#include FT_MODULE_H // <freetype/ftmodapi.h>
#include FT_GLYPH_H // <freetype/ftglyph.h>
#include FT_SYNTHESIS_H // <freetype/ftsynth.h>
#ifdef _MSC_VER
#pragma warning (push)
#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
#pragma warning (disable: 26812) // [Static Analyzer] The enum type 'xxx' is unscoped. Prefer 'enum class' over 'enum' (Enum.3).
#endif
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind
#pragma GCC diagnostic ignored "-Wunused-function" // warning: 'xxxx' defined but not used
#pragma GCC diagnostic ignored "-Wsubobject-linkage" // warning: 'xxxx' has a field ‘xxxx’ whose type uses the anonymous namespace
#endif
//-------------------------------------------------------------------------
// Data
//-------------------------------------------------------------------------
// Default memory allocators
static void* ImGuiFreeTypeDefaultAllocFunc(size_t size, void* user_data) { IM_UNUSED(user_data); return IM_ALLOC(size); }
static void ImGuiFreeTypeDefaultFreeFunc(void* ptr, void* user_data) { IM_UNUSED(user_data); IM_FREE(ptr); }
// Current memory allocators
static void* (*GImGuiFreeTypeAllocFunc)(size_t size, void* user_data) = ImGuiFreeTypeDefaultAllocFunc;
static void (*GImGuiFreeTypeFreeFunc)(void* ptr, void* user_data) = ImGuiFreeTypeDefaultFreeFunc;
static void* GImGuiFreeTypeAllocatorUserData = NULL;
//-------------------------------------------------------------------------
// Code
//-------------------------------------------------------------------------
namespace
{
// Glyph metrics:
// --------------
//
// xmin xmax
// | |
// |<-------- width -------->|
// | |
// | +-------------------------+----------------- ymax
// | | ggggggggg ggggg | ^ ^
// | | g:::::::::ggg::::g | | |
// | | g:::::::::::::::::g | | |
// | | g::::::ggggg::::::gg | | |
// | | g:::::g g:::::g | | |
// offsetX -|-------->| g:::::g g:::::g | offsetY |
// | | g:::::g g:::::g | | |
// | | g::::::g g:::::g | | |
// | | g:::::::ggggg:::::g | | |
// | | g::::::::::::::::g | | height
// | | gg::::::::::::::g | | |
// baseline ---*---------|---- gggggggg::::::g-----*-------- |
// / | | g:::::g | |
// origin | | gggggg g:::::g | |
// | | g:::::gg gg:::::g | |
// | | g::::::ggg:::::::g | |
// | | gg:::::::::::::g | |
// | | ggg::::::ggg | |
// | | gggggg | v
// | +-------------------------+----------------- ymin
// | |
// |------------- advanceX ----------->|
// A structure that describe a glyph.
struct GlyphInfo
{
int Width; // Glyph's width in pixels.
int Height; // Glyph's height in pixels.
FT_Int OffsetX; // The distance from the origin ("pen position") to the left of the glyph.
FT_Int OffsetY; // The distance from the origin to the top of the glyph. This is usually a value < 0.
float AdvanceX; // The distance from the origin to the origin of the next glyph. This is usually a value > 0.
bool IsColored; // The glyph is colored
};
// Font parameters and metrics.
struct FontInfo
{
uint32_t PixelHeight; // Size this font was generated with.
float Ascender; // The pixel extents above the baseline in pixels (typically positive).
float Descender; // The extents below the baseline in pixels (typically negative).
float LineSpacing; // The baseline-to-baseline distance. Note that it usually is larger than the sum of the ascender and descender taken as absolute values. There is also no guarantee that no glyphs extend above or below subsequent baselines when using this distance. Think of it as a value the designer of the font finds appropriate.
float LineGap; // The spacing in pixels between one row's descent and the next row's ascent.
float MaxAdvanceWidth; // This field gives the maximum horizontal cursor advance for all glyphs in the font.
};
// FreeType glyph rasterizer.
// NB: No ctor/dtor, explicitly call Init()/Shutdown()
struct FreeTypeFont
{
bool InitFont(FT_Library ft_library, const ImFontConfig& cfg, unsigned int extra_user_flags); // Initialize from an external data buffer. Doesn't copy data, and you must ensure it stays valid up to this object lifetime.
void CloseFont();
void SetPixelHeight(int pixel_height); // Change font pixel size. All following calls to RasterizeGlyph() will use this size
const FT_Glyph_Metrics* LoadGlyph(uint32_t in_codepoint);
const FT_Bitmap* RenderGlyphAndGetInfo(GlyphInfo* out_glyph_info);
void BlitGlyph(const FT_Bitmap* ft_bitmap, uint32_t* dst, uint32_t dst_pitch, unsigned char* multiply_table = NULL);
~FreeTypeFont() { CloseFont(); }
// [Internals]
FontInfo Info; // Font descriptor of the current font.
FT_Face Face;
unsigned int UserFlags; // = ImFontConfig::RasterizerFlags
FT_Int32 LoadFlags;
FT_Render_Mode RenderMode;
};
// From SDL_ttf: Handy routines for converting from fixed point
#define FT_CEIL(X) (((X + 63) & -64) / 64)
bool FreeTypeFont::InitFont(FT_Library ft_library, const ImFontConfig& cfg, unsigned int extra_font_builder_flags)
{
FT_Error error = FT_New_Memory_Face(ft_library, (uint8_t*)cfg.FontData, (uint32_t)cfg.FontDataSize, (uint32_t)cfg.FontNo, &Face);
if (error != 0)
return false;
error = FT_Select_Charmap(Face, FT_ENCODING_UNICODE);
if (error != 0)
return false;
// Convert to FreeType flags (NB: Bold and Oblique are processed separately)
UserFlags = cfg.FontBuilderFlags | extra_font_builder_flags;
LoadFlags = 0;
if ((UserFlags & ImGuiFreeTypeBuilderFlags_Bitmap) == 0)
LoadFlags |= FT_LOAD_NO_BITMAP;
if (UserFlags & ImGuiFreeTypeBuilderFlags_NoHinting)
LoadFlags |= FT_LOAD_NO_HINTING;
if (UserFlags & ImGuiFreeTypeBuilderFlags_NoAutoHint)
LoadFlags |= FT_LOAD_NO_AUTOHINT;
if (UserFlags & ImGuiFreeTypeBuilderFlags_ForceAutoHint)
LoadFlags |= FT_LOAD_FORCE_AUTOHINT;
if (UserFlags & ImGuiFreeTypeBuilderFlags_LightHinting)
LoadFlags |= FT_LOAD_TARGET_LIGHT;
else if (UserFlags & ImGuiFreeTypeBuilderFlags_MonoHinting)
LoadFlags |= FT_LOAD_TARGET_MONO;
else
LoadFlags |= FT_LOAD_TARGET_NORMAL;
if (UserFlags & ImGuiFreeTypeBuilderFlags_Monochrome)
RenderMode = FT_RENDER_MODE_MONO;
else
RenderMode = FT_RENDER_MODE_NORMAL;
if (UserFlags & ImGuiFreeTypeBuilderFlags_LoadColor)
LoadFlags |= FT_LOAD_COLOR;
memset(&Info, 0, sizeof(Info));
SetPixelHeight((uint32_t)cfg.SizePixels);
return true;
}
void FreeTypeFont::CloseFont()
{
if (Face)
{
FT_Done_Face(Face);
Face = NULL;
}
}
void FreeTypeFont::SetPixelHeight(int pixel_height)
{
// Vuhdo: I'm not sure how to deal with font sizes properly. As far as I understand, currently ImGui assumes that the 'pixel_height'
// is a maximum height of an any given glyph, i.e. it's the sum of font's ascender and descender. Seems strange to me.
// NB: FT_Set_Pixel_Sizes() doesn't seem to get us the same result.
FT_Size_RequestRec req;
req.type = (UserFlags & ImGuiFreeTypeBuilderFlags_Bitmap) ? FT_SIZE_REQUEST_TYPE_NOMINAL : FT_SIZE_REQUEST_TYPE_REAL_DIM;
req.width = 0;
req.height = (uint32_t)pixel_height * 64;
req.horiResolution = 0;
req.vertResolution = 0;
FT_Request_Size(Face, &req);
// Update font info
FT_Size_Metrics metrics = Face->size->metrics;
Info.PixelHeight = (uint32_t)pixel_height;
Info.Ascender = (float)FT_CEIL(metrics.ascender);
Info.Descender = (float)FT_CEIL(metrics.descender);
Info.LineSpacing = (float)FT_CEIL(metrics.height);
Info.LineGap = (float)FT_CEIL(metrics.height - metrics.ascender + metrics.descender);
Info.MaxAdvanceWidth = (float)FT_CEIL(metrics.max_advance);
}
const FT_Glyph_Metrics* FreeTypeFont::LoadGlyph(uint32_t codepoint)
{
uint32_t glyph_index = FT_Get_Char_Index(Face, codepoint);
if (glyph_index == 0)
return NULL;
// If this crash for you: FreeType 2.11.0 has a crash bug on some bitmap/colored fonts.
// - https://gitlab.freedesktop.org/freetype/freetype/-/issues/1076
// - https://github.com/ocornut/imgui/issues/4567
// - https://github.com/ocornut/imgui/issues/4566
// You can use FreeType 2.10, or the patched version of 2.11.0 in VcPkg, or probably any upcoming FreeType version.
FT_Error error = FT_Load_Glyph(Face, glyph_index, LoadFlags);
if (error)
return NULL;
// Need an outline for this to work
FT_GlyphSlot slot = Face->glyph;
IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE || slot->format == FT_GLYPH_FORMAT_BITMAP);
// Apply convenience transform (this is not picking from real "Bold"/"Italic" fonts! Merely applying FreeType helper transform. Oblique == Slanting)
if (UserFlags & ImGuiFreeTypeBuilderFlags_Bold)
FT_GlyphSlot_Embolden(slot);
if (UserFlags & ImGuiFreeTypeBuilderFlags_Oblique)
{
FT_GlyphSlot_Oblique(slot);
//FT_BBox bbox;
//FT_Outline_Get_BBox(&slot->outline, &bbox);
//slot->metrics.width = bbox.xMax - bbox.xMin;
//slot->metrics.height = bbox.yMax - bbox.yMin;
}
return &slot->metrics;
}
const FT_Bitmap* FreeTypeFont::RenderGlyphAndGetInfo(GlyphInfo* out_glyph_info)
{
FT_GlyphSlot slot = Face->glyph;
FT_Error error = FT_Render_Glyph(slot, RenderMode);
if (error != 0)
return NULL;
FT_Bitmap* ft_bitmap = &Face->glyph->bitmap;
out_glyph_info->Width = (int)ft_bitmap->width;
out_glyph_info->Height = (int)ft_bitmap->rows;
out_glyph_info->OffsetX = Face->glyph->bitmap_left;
out_glyph_info->OffsetY = -Face->glyph->bitmap_top;
out_glyph_info->AdvanceX = (float)FT_CEIL(slot->advance.x);
out_glyph_info->IsColored = (ft_bitmap->pixel_mode == FT_PIXEL_MODE_BGRA);
return ft_bitmap;
}
void FreeTypeFont::BlitGlyph(const FT_Bitmap* ft_bitmap, uint32_t* dst, uint32_t dst_pitch, unsigned char* multiply_table)
{
IM_ASSERT(ft_bitmap != NULL);
const uint32_t w = ft_bitmap->width;
const uint32_t h = ft_bitmap->rows;
const uint8_t* src = ft_bitmap->buffer;
const uint32_t src_pitch = ft_bitmap->pitch;
switch (ft_bitmap->pixel_mode)
{
case FT_PIXEL_MODE_GRAY: // Grayscale image, 1 byte per pixel.
{
if (multiply_table == NULL)
{
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
for (uint32_t x = 0; x < w; x++)
dst[x] = IM_COL32(255, 255, 255, src[x]);
}
else
{
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
for (uint32_t x = 0; x < w; x++)
dst[x] = IM_COL32(255, 255, 255, multiply_table[src[x]]);
}
break;
}
case FT_PIXEL_MODE_MONO: // Monochrome image, 1 bit per pixel. The bits in each byte are ordered from MSB to LSB.
{
uint8_t color0 = multiply_table ? multiply_table[0] : 0;
uint8_t color1 = multiply_table ? multiply_table[255] : 255;
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
{
uint8_t bits = 0;
const uint8_t* bits_ptr = src;
for (uint32_t x = 0; x < w; x++, bits <<= 1)
{
if ((x & 7) == 0)
bits = *bits_ptr++;
dst[x] = IM_COL32(255, 255, 255, (bits & 0x80) ? color1 : color0);
}
}
break;
}
case FT_PIXEL_MODE_BGRA:
{
// FIXME: Converting pre-multiplied alpha to straight. Doesn't smell good.
#define DE_MULTIPLY(color, alpha) (ImU32)(255.0f * (float)color / (float)alpha + 0.5f)
if (multiply_table == NULL)
{
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
for (uint32_t x = 0; x < w; x++)
{
uint8_t r = src[x * 4 + 2], g = src[x * 4 + 1], b = src[x * 4], a = src[x * 4 + 3];
dst[x] = IM_COL32(DE_MULTIPLY(r, a), DE_MULTIPLY(g, a), DE_MULTIPLY(b, a), a);
}
}
else
{
for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
{
for (uint32_t x = 0; x < w; x++)
{
uint8_t r = src[x * 4 + 2], g = src[x * 4 + 1], b = src[x * 4], a = src[x * 4 + 3];
dst[x] = IM_COL32(multiply_table[DE_MULTIPLY(r, a)], multiply_table[DE_MULTIPLY(g, a)], multiply_table[DE_MULTIPLY(b, a)], multiply_table[a]);
}
}
}
#undef DE_MULTIPLY
break;
}
default:
IM_ASSERT(0 && "FreeTypeFont::BlitGlyph(): Unknown bitmap pixel mode!");
}
}
} // namespace
#ifndef STB_RECT_PACK_IMPLEMENTATION // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)
#ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
#define STBRP_ASSERT(x) do { IM_ASSERT(x); } while (0)
#define STBRP_STATIC
#define STB_RECT_PACK_IMPLEMENTATION
#endif
#ifdef IMGUI_STB_RECT_PACK_FILENAME
#include IMGUI_STB_RECT_PACK_FILENAME
#else
#include "imstb_rectpack.h"
#endif
#endif
struct ImFontBuildSrcGlyphFT
{
GlyphInfo Info;
uint32_t Codepoint;
unsigned int* BitmapData; // Point within one of the dst_tmp_bitmap_buffers[] array
ImFontBuildSrcGlyphFT() { memset((void*)this, 0, sizeof(*this)); }
};
struct ImFontBuildSrcDataFT
{
FreeTypeFont Font;
stbrp_rect* Rects; // Rectangle to pack. We first fill in their size and the packer will give us their position.
const ImWchar* SrcRanges; // Ranges as requested by user (user is allowed to request too much, e.g. 0x0020..0xFFFF)
int DstIndex; // Index into atlas->Fonts[] and dst_tmp_array[]
int GlyphsHighest; // Highest requested codepoint
int GlyphsCount; // Glyph count (excluding missing glyphs and glyphs already set by an earlier source font)
ImBitVector GlyphsSet; // Glyph bit map (random access, 1-bit per codepoint. This will be a maximum of 8KB)
ImVector<ImFontBuildSrcGlyphFT> GlyphsList;
};
// Temporary data for one destination ImFont* (multiple source fonts can be merged into one destination ImFont)
struct ImFontBuildDstDataFT
{
int SrcCount; // Number of source fonts targeting this destination font.
int GlyphsHighest;
int GlyphsCount;
ImBitVector GlyphsSet; // This is used to resolve collision when multiple sources are merged into a same destination font.
};
bool ImFontAtlasBuildWithFreeTypeEx(FT_Library ft_library, ImFontAtlas* atlas, unsigned int extra_flags)
{
IM_ASSERT(atlas->ConfigData.Size > 0);
ImFontAtlasBuildInit(atlas);
// Clear atlas
atlas->TexID = (ImTextureID)NULL;
atlas->TexWidth = atlas->TexHeight = 0;
atlas->TexUvScale = ImVec2(0.0f, 0.0f);
atlas->TexUvWhitePixel = ImVec2(0.0f, 0.0f);
atlas->ClearTexData();
// Temporary storage for building
bool src_load_color = false;
ImVector<ImFontBuildSrcDataFT> src_tmp_array;
ImVector<ImFontBuildDstDataFT> dst_tmp_array;
src_tmp_array.resize(atlas->ConfigData.Size);
dst_tmp_array.resize(atlas->Fonts.Size);
memset((void*)src_tmp_array.Data, 0, (size_t)src_tmp_array.size_in_bytes());
memset((void*)dst_tmp_array.Data, 0, (size_t)dst_tmp_array.size_in_bytes());
// 1. Initialize font loading structure, check font data validity
for (int src_i = 0; src_i < atlas->ConfigData.Size; src_i++)
{
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
ImFontConfig& cfg = atlas->ConfigData[src_i];
FreeTypeFont& font_face = src_tmp.Font;
IM_ASSERT(cfg.DstFont && (!cfg.DstFont->IsLoaded() || cfg.DstFont->ContainerAtlas == atlas));
// Find index from cfg.DstFont (we allow the user to set cfg.DstFont. Also it makes casual debugging nicer than when storing indices)
src_tmp.DstIndex = -1;
for (int output_i = 0; output_i < atlas->Fonts.Size && src_tmp.DstIndex == -1; output_i++)
if (cfg.DstFont == atlas->Fonts[output_i])
src_tmp.DstIndex = output_i;
IM_ASSERT(src_tmp.DstIndex != -1); // cfg.DstFont not pointing within atlas->Fonts[] array?
if (src_tmp.DstIndex == -1)
return false;
// Load font
if (!font_face.InitFont(ft_library, cfg, extra_flags))
return false;
// Measure highest codepoints
src_load_color |= (cfg.FontBuilderFlags & ImGuiFreeTypeBuilderFlags_LoadColor) != 0;
ImFontBuildDstDataFT& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
src_tmp.SrcRanges = cfg.GlyphRanges ? cfg.GlyphRanges : atlas->GetGlyphRangesDefault();
for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
src_tmp.GlyphsHighest = ImMax(src_tmp.GlyphsHighest, (int)src_range[1]);
dst_tmp.SrcCount++;
dst_tmp.GlyphsHighest = ImMax(dst_tmp.GlyphsHighest, src_tmp.GlyphsHighest);
}
// 2. For every requested codepoint, check for their presence in the font data, and handle redundancy or overlaps between source fonts to avoid unused glyphs.
int total_glyphs_count = 0;
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
ImFontBuildDstDataFT& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
src_tmp.GlyphsSet.Create(src_tmp.GlyphsHighest + 1);
if (dst_tmp.GlyphsSet.Storage.empty())
dst_tmp.GlyphsSet.Create(dst_tmp.GlyphsHighest + 1);
for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
for (int codepoint = src_range[0]; codepoint <= (int)src_range[1]; codepoint++)
{
if (dst_tmp.GlyphsSet.TestBit(codepoint)) // Don't overwrite existing glyphs. We could make this an option (e.g. MergeOverwrite)
continue;
uint32_t glyph_index = FT_Get_Char_Index(src_tmp.Font.Face, codepoint); // It is actually in the font? (FIXME-OPT: We are not storing the glyph_index..)
if (glyph_index == 0)
continue;
// Add to avail set/counters
src_tmp.GlyphsCount++;
dst_tmp.GlyphsCount++;
src_tmp.GlyphsSet.SetBit(codepoint);
dst_tmp.GlyphsSet.SetBit(codepoint);
total_glyphs_count++;
}
}
// 3. Unpack our bit map into a flat list (we now have all the Unicode points that we know are requested _and_ available _and_ not overlapping another)
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
src_tmp.GlyphsList.reserve(src_tmp.GlyphsCount);
IM_ASSERT(sizeof(src_tmp.GlyphsSet.Storage.Data[0]) == sizeof(ImU32));
const ImU32* it_begin = src_tmp.GlyphsSet.Storage.begin();
const ImU32* it_end = src_tmp.GlyphsSet.Storage.end();
for (const ImU32* it = it_begin; it < it_end; it++)
if (ImU32 entries_32 = *it)
for (ImU32 bit_n = 0; bit_n < 32; bit_n++)
if (entries_32 & ((ImU32)1 << bit_n))
{
ImFontBuildSrcGlyphFT src_glyph;
src_glyph.Codepoint = (ImWchar)(((it - it_begin) << 5) + bit_n);
//src_glyph.GlyphIndex = 0; // FIXME-OPT: We had this info in the previous step and lost it..
src_tmp.GlyphsList.push_back(src_glyph);
}
src_tmp.GlyphsSet.Clear();
IM_ASSERT(src_tmp.GlyphsList.Size == src_tmp.GlyphsCount);
}
for (int dst_i = 0; dst_i < dst_tmp_array.Size; dst_i++)
dst_tmp_array[dst_i].GlyphsSet.Clear();
dst_tmp_array.clear();
// Allocate packing character data and flag packed characters buffer as non-packed (x0=y0=x1=y1=0)
// (We technically don't need to zero-clear buf_rects, but let's do it for the sake of sanity)
ImVector<stbrp_rect> buf_rects;
buf_rects.resize(total_glyphs_count);
memset(buf_rects.Data, 0, (size_t)buf_rects.size_in_bytes());
// Allocate temporary rasterization data buffers.
// We could not find a way to retrieve accurate glyph size without rendering them.
// (e.g. slot->metrics->width not always matching bitmap->width, especially considering the Oblique transform)
// We allocate in chunks of 256 KB to not waste too much extra memory ahead. Hopefully users of FreeType won't mind the temporary allocations.
const int BITMAP_BUFFERS_CHUNK_SIZE = 256 * 1024;
int buf_bitmap_current_used_bytes = 0;
ImVector<unsigned char*> buf_bitmap_buffers;
buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
// 4. Gather glyphs sizes so we can pack them in our virtual canvas.
// 8. Render/rasterize font characters into the texture
int total_surface = 0;
int buf_rects_out_n = 0;
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
ImFontConfig& cfg = atlas->ConfigData[src_i];
if (src_tmp.GlyphsCount == 0)
continue;
src_tmp.Rects = &buf_rects[buf_rects_out_n];
buf_rects_out_n += src_tmp.GlyphsCount;
// Compute multiply table if requested
const bool multiply_enabled = (cfg.RasterizerMultiply != 1.0f);
unsigned char multiply_table[256];
if (multiply_enabled)
ImFontAtlasBuildMultiplyCalcLookupTable(multiply_table, cfg.RasterizerMultiply);
// Gather the sizes of all rectangles we will need to pack
const int padding = atlas->TexGlyphPadding;
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsList.Size; glyph_i++)
{
ImFontBuildSrcGlyphFT& src_glyph = src_tmp.GlyphsList[glyph_i];
const FT_Glyph_Metrics* metrics = src_tmp.Font.LoadGlyph(src_glyph.Codepoint);
if (metrics == NULL)
continue;
// Render glyph into a bitmap (currently held by FreeType)
const FT_Bitmap* ft_bitmap = src_tmp.Font.RenderGlyphAndGetInfo(&src_glyph.Info);
if (ft_bitmap == NULL)
continue;
// Allocate new temporary chunk if needed
const int bitmap_size_in_bytes = src_glyph.Info.Width * src_glyph.Info.Height * 4;
if (buf_bitmap_current_used_bytes + bitmap_size_in_bytes > BITMAP_BUFFERS_CHUNK_SIZE)
{
buf_bitmap_current_used_bytes = 0;
buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
}
IM_ASSERT(buf_bitmap_current_used_bytes + bitmap_size_in_bytes <= BITMAP_BUFFERS_CHUNK_SIZE); // We could probably allocate custom-sized buffer instead.
// Blit rasterized pixels to our temporary buffer and keep a pointer to it.
src_glyph.BitmapData = (unsigned int*)(buf_bitmap_buffers.back() + buf_bitmap_current_used_bytes);
buf_bitmap_current_used_bytes += bitmap_size_in_bytes;
src_tmp.Font.BlitGlyph(ft_bitmap, src_glyph.BitmapData, src_glyph.Info.Width, multiply_enabled ? multiply_table : NULL);
src_tmp.Rects[glyph_i].w = (stbrp_coord)(src_glyph.Info.Width + padding);
src_tmp.Rects[glyph_i].h = (stbrp_coord)(src_glyph.Info.Height + padding);
total_surface += src_tmp.Rects[glyph_i].w * src_tmp.Rects[glyph_i].h;
}
}
// We need a width for the skyline algorithm, any width!
// The exact width doesn't really matter much, but some API/GPU have texture size limitations and increasing width can decrease height.
// User can override TexDesiredWidth and TexGlyphPadding if they wish, otherwise we use a simple heuristic to select the width based on expected surface.
const int surface_sqrt = (int)ImSqrt((float)total_surface) + 1;
atlas->TexHeight = 0;
if (atlas->TexDesiredWidth > 0)
atlas->TexWidth = atlas->TexDesiredWidth;
else
atlas->TexWidth = (surface_sqrt >= 4096 * 0.7f) ? 4096 : (surface_sqrt >= 2048 * 0.7f) ? 2048 : (surface_sqrt >= 1024 * 0.7f) ? 1024 : 512;
// 5. Start packing
// Pack our extra data rectangles first, so it will be on the upper-left corner of our texture (UV will have small values).
const int TEX_HEIGHT_MAX = 1024 * 32;
const int num_nodes_for_packing_algorithm = atlas->TexWidth - atlas->TexGlyphPadding;
ImVector<stbrp_node> pack_nodes;
pack_nodes.resize(num_nodes_for_packing_algorithm);
stbrp_context pack_context;
stbrp_init_target(&pack_context, atlas->TexWidth - atlas->TexGlyphPadding, TEX_HEIGHT_MAX - atlas->TexGlyphPadding, pack_nodes.Data, pack_nodes.Size);
ImFontAtlasBuildPackCustomRects(atlas, &pack_context);
// 6. Pack each source font. No rendering yet, we are working with rectangles in an infinitely tall texture at this point.
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
if (src_tmp.GlyphsCount == 0)
continue;
stbrp_pack_rects(&pack_context, src_tmp.Rects, src_tmp.GlyphsCount);
// Extend texture height and mark missing glyphs as non-packed so we won't render them.
// FIXME: We are not handling packing failure here (would happen if we got off TEX_HEIGHT_MAX or if a single if larger than TexWidth?)
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
if (src_tmp.Rects[glyph_i].was_packed)
atlas->TexHeight = ImMax(atlas->TexHeight, src_tmp.Rects[glyph_i].y + src_tmp.Rects[glyph_i].h);
}
// 7. Allocate texture
atlas->TexHeight = (atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) ? (atlas->TexHeight + 1) : ImUpperPowerOfTwo(atlas->TexHeight);
atlas->TexUvScale = ImVec2(1.0f / atlas->TexWidth, 1.0f / atlas->TexHeight);
if (src_load_color)
{
size_t tex_size = (size_t)atlas->TexWidth * atlas->TexHeight * 4;
atlas->TexPixelsRGBA32 = (unsigned int*)IM_ALLOC(tex_size);
memset(atlas->TexPixelsRGBA32, 0, tex_size);
}
else
{
size_t tex_size = (size_t)atlas->TexWidth * atlas->TexHeight * 1;
atlas->TexPixelsAlpha8 = (unsigned char*)IM_ALLOC(tex_size);
memset(atlas->TexPixelsAlpha8, 0, tex_size);
}
// 8. Copy rasterized font characters back into the main texture
// 9. Setup ImFont and glyphs for runtime
bool tex_use_colors = false;
for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
{
ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
if (src_tmp.GlyphsCount == 0)
continue;
// When merging fonts with MergeMode=true:
// - We can have multiple input fonts writing into a same destination font.
// - dst_font->ConfigData is != from cfg which is our source configuration.
ImFontConfig& cfg = atlas->ConfigData[src_i];
ImFont* dst_font = cfg.DstFont;
const float ascent = src_tmp.Font.Info.Ascender;
const float descent = src_tmp.Font.Info.Descender;
ImFontAtlasBuildSetupFont(atlas, dst_font, &cfg, ascent, descent);
const float font_off_x = cfg.GlyphOffset.x;
const float font_off_y = cfg.GlyphOffset.y + IM_ROUND(dst_font->Ascent);
const int padding = atlas->TexGlyphPadding;
for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
{
ImFontBuildSrcGlyphFT& src_glyph = src_tmp.GlyphsList[glyph_i];
stbrp_rect& pack_rect = src_tmp.Rects[glyph_i];
IM_ASSERT(pack_rect.was_packed);
if (pack_rect.w == 0 && pack_rect.h == 0)
continue;
GlyphInfo& info = src_glyph.Info;
IM_ASSERT(info.Width + padding <= pack_rect.w);
IM_ASSERT(info.Height + padding <= pack_rect.h);
const int tx = pack_rect.x + padding;
const int ty = pack_rect.y + padding;
// Register glyph
float x0 = info.OffsetX + font_off_x;
float y0 = info.OffsetY + font_off_y;
float x1 = x0 + info.Width;
float y1 = y0 + info.Height;
float u0 = (tx) / (float)atlas->TexWidth;
float v0 = (ty) / (float)atlas->TexHeight;
float u1 = (tx + info.Width) / (float)atlas->TexWidth;
float v1 = (ty + info.Height) / (float)atlas->TexHeight;
dst_font->AddGlyph(&cfg, (ImWchar)src_glyph.Codepoint, x0, y0, x1, y1, u0, v0, u1, v1, info.AdvanceX);
ImFontGlyph* dst_glyph = &dst_font->Glyphs.back();
IM_ASSERT(dst_glyph->Codepoint == src_glyph.Codepoint);
if (src_glyph.Info.IsColored)
dst_glyph->Colored = tex_use_colors = true;
// Blit from temporary buffer to final texture
size_t blit_src_stride = (size_t)src_glyph.Info.Width;
size_t blit_dst_stride = (size_t)atlas->TexWidth;
unsigned int* blit_src = src_glyph.BitmapData;
if (atlas->TexPixelsAlpha8 != NULL)
{
unsigned char* blit_dst = atlas->TexPixelsAlpha8 + (ty * blit_dst_stride) + tx;
for (int y = 0; y < info.Height; y++, blit_dst += blit_dst_stride, blit_src += blit_src_stride)
for (int x = 0; x < info.Width; x++)
blit_dst[x] = (unsigned char)((blit_src[x] >> IM_COL32_A_SHIFT) & 0xFF);
}
else
{
unsigned int* blit_dst = atlas->TexPixelsRGBA32 + (ty * blit_dst_stride) + tx;
for (int y = 0; y < info.Height; y++, blit_dst += blit_dst_stride, blit_src += blit_src_stride)
for (int x = 0; x < info.Width; x++)
blit_dst[x] = blit_src[x];
}
}
src_tmp.Rects = NULL;
}
atlas->TexPixelsUseColors = tex_use_colors;
// Cleanup
for (int buf_i = 0; buf_i < buf_bitmap_buffers.Size; buf_i++)
IM_FREE(buf_bitmap_buffers[buf_i]);
src_tmp_array.clear_destruct();
ImFontAtlasBuildFinish(atlas);
return true;
}
// FreeType memory allocation callbacks
static void* FreeType_Alloc(FT_Memory /*memory*/, long size)
{
return GImGuiFreeTypeAllocFunc((size_t)size, GImGuiFreeTypeAllocatorUserData);
}
static void FreeType_Free(FT_Memory /*memory*/, void* block)
{
GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
}
static void* FreeType_Realloc(FT_Memory /*memory*/, long cur_size, long new_size, void* block)
{
// Implement realloc() as we don't ask user to provide it.
if (block == NULL)
return GImGuiFreeTypeAllocFunc((size_t)new_size, GImGuiFreeTypeAllocatorUserData);
if (new_size == 0)
{
GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
return NULL;
}
if (new_size > cur_size)
{
void* new_block = GImGuiFreeTypeAllocFunc((size_t)new_size, GImGuiFreeTypeAllocatorUserData);
memcpy(new_block, block, (size_t)cur_size);
GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
return new_block;
}
return block;
}
static bool ImFontAtlasBuildWithFreeType(ImFontAtlas* atlas)
{
// FreeType memory management: https://www.freetype.org/freetype2/docs/design/design-4.html
FT_MemoryRec_ memory_rec = {};
memory_rec.user = NULL;
memory_rec.alloc = &FreeType_Alloc;
memory_rec.free = &FreeType_Free;
memory_rec.realloc = &FreeType_Realloc;
// https://www.freetype.org/freetype2/docs/reference/ft2-module_management.html#FT_New_Library
FT_Library ft_library;
FT_Error error = FT_New_Library(&memory_rec, &ft_library);
if (error != 0)
return false;
// If you don't call FT_Add_Default_Modules() the rest of code may work, but FreeType won't use our custom allocator.
FT_Add_Default_Modules(ft_library);
bool ret = ImFontAtlasBuildWithFreeTypeEx(ft_library, atlas, atlas->FontBuilderFlags);
FT_Done_Library(ft_library);
return ret;
}
const ImFontBuilderIO* ImGuiFreeType::GetBuilderForFreeType()
{
static ImFontBuilderIO io;
io.FontBuilder_Build = ImFontAtlasBuildWithFreeType;
return &io;
}
void ImGuiFreeType::SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data)
{
GImGuiFreeTypeAllocFunc = alloc_func;
GImGuiFreeTypeFreeFunc = free_func;
GImGuiFreeTypeAllocatorUserData = user_data;
}
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
#ifdef _MSC_VER
#pragma warning (pop)
#endif

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// dear imgui: FreeType font builder (used as a replacement for the stb_truetype builder)
// (headers)
#pragma once
#include "imgui.h" // IMGUI_API
// Forward declarations
struct ImFontAtlas;
struct ImFontBuilderIO;
// Hinting greatly impacts visuals (and glyph sizes).
// - By default, hinting is enabled and the font's native hinter is preferred over the auto-hinter.
// - When disabled, FreeType generates blurrier glyphs, more or less matches the stb_truetype.h
// - The Default hinting mode usually looks good, but may distort glyphs in an unusual way.
// - The Light hinting mode generates fuzzier glyphs but better matches Microsoft's rasterizer.
// You can set those flags globaly in ImFontAtlas::FontBuilderFlags
// You can set those flags on a per font basis in ImFontConfig::FontBuilderFlags
enum ImGuiFreeTypeBuilderFlags
{
ImGuiFreeTypeBuilderFlags_NoHinting = 1 << 0, // Disable hinting. This generally generates 'blurrier' bitmap glyphs when the glyph are rendered in any of the anti-aliased modes.
ImGuiFreeTypeBuilderFlags_NoAutoHint = 1 << 1, // Disable auto-hinter.
ImGuiFreeTypeBuilderFlags_ForceAutoHint = 1 << 2, // Indicates that the auto-hinter is preferred over the font's native hinter.
ImGuiFreeTypeBuilderFlags_LightHinting = 1 << 3, // A lighter hinting algorithm for gray-level modes. Many generated glyphs are fuzzier but better resemble their original shape. This is achieved by snapping glyphs to the pixel grid only vertically (Y-axis), as is done by Microsoft's ClearType and Adobe's proprietary font renderer. This preserves inter-glyph spacing in horizontal text.
ImGuiFreeTypeBuilderFlags_MonoHinting = 1 << 4, // Strong hinting algorithm that should only be used for monochrome output.
ImGuiFreeTypeBuilderFlags_Bold = 1 << 5, // Styling: Should we artificially embolden the font?
ImGuiFreeTypeBuilderFlags_Oblique = 1 << 6, // Styling: Should we slant the font, emulating italic style?
ImGuiFreeTypeBuilderFlags_Monochrome = 1 << 7, // Disable anti-aliasing. Combine this with MonoHinting for best results!
ImGuiFreeTypeBuilderFlags_LoadColor = 1 << 8, // Enable FreeType color-layered glyphs
ImGuiFreeTypeBuilderFlags_Bitmap = 1 << 9 // Enable FreeType bitmap glyphs
};
namespace ImGuiFreeType
{
// This is automatically assigned when using '#define IMGUI_ENABLE_FREETYPE'.
// If you need to dynamically select between multiple builders:
// - you can manually assign this builder with 'atlas->FontBuilderIO = ImGuiFreeType::GetBuilderForFreeType()'
// - prefer deep-copying this into your own ImFontBuilderIO instance if you use hot-reloading that messes up static data.
IMGUI_API const ImFontBuilderIO* GetBuilderForFreeType();
// Override allocators. By default ImGuiFreeType will use IM_ALLOC()/IM_FREE()
// However, as FreeType does lots of allocations we provide a way for the user to redirect it to a separate memory heap if desired.
IMGUI_API void SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data = NULL);
// Obsolete names (will be removed soon)
// Prefer using '#define IMGUI_ENABLE_FREETYPE'
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
static inline bool BuildFontAtlas(ImFontAtlas* atlas, unsigned int flags = 0) { atlas->FontBuilderIO = GetBuilderForFreeType(); atlas->FontBuilderFlags = flags; return atlas->Build(); }
#endif
}

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// dear imgui: single-file wrapper include
// We use this to validate compiling all *.cpp files in a same compilation unit.
// Users of that technique (also called "Unity builds") can generally provide this themselves,
// so we don't really recommend you use this in your projects.
// Do this:
// #define IMGUI_IMPLEMENTATION
// Before you include this file in *one* C++ file to create the implementation.
// Using this in your project will leak the contents of imgui_internal.h and ImVec2 operators in this compilation unit.
#include "../../imgui.h"
#ifdef IMGUI_ENABLE_FREETYPE
#include "../../misc/freetype/imgui_freetype.h"
#endif
#ifdef IMGUI_IMPLEMENTATION
#include "../../imgui.cpp"
#include "../../imgui_demo.cpp"
#include "../../imgui_draw.cpp"
#include "../../imgui_tables.cpp"
#include "../../imgui_widgets.cpp"
#ifdef IMGUI_ENABLE_FREETYPE
#include "../../misc/freetype/imgui_freetype.cpp"
#endif
#endif