913 lines
38 KiB
C
913 lines
38 KiB
C
/*
|
|
librashader.h
|
|
SPDX-License-Identifier: MIT
|
|
This file is part of the librashader C headers.
|
|
|
|
Copyright 2022 chyyran
|
|
|
|
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.
|
|
*/
|
|
|
|
|
|
#ifndef __LIBRASHADER_H__
|
|
#define __LIBRASHADER_H__
|
|
|
|
#pragma once
|
|
|
|
#include <stdarg.h>
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#if defined(_WIN32) && defined(LIBRA_RUNTIME_D3D11)
|
|
#include <d3d11.h>
|
|
#else
|
|
typedef void ID3D11Device;
|
|
typedef void ID3D11RenderTargetView;
|
|
typedef void ID3D11ShaderResourceView;
|
|
#endif
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
#include <vulkan\vulkan.h>
|
|
#else
|
|
typedef int32_t VkFormat;
|
|
typedef uint64_t VkImage;
|
|
typedef void* VkPhysicalDevice;
|
|
typedef void* VkInstance;
|
|
typedef void* VkCommandBuffer;
|
|
#endif
|
|
|
|
|
|
/// Error codes for librashader error types.
|
|
enum LIBRA_ERRNO
|
|
#ifdef __cplusplus
|
|
: int32_t
|
|
#endif // __cplusplus
|
|
{
|
|
LIBRA_ERRNO_UNKNOWN_ERROR = 0,
|
|
LIBRA_ERRNO_INVALID_PARAMETER = 1,
|
|
LIBRA_ERRNO_INVALID_STRING = 2,
|
|
LIBRA_ERRNO_PRESET_ERROR = 3,
|
|
LIBRA_ERRNO_PREPROCESS_ERROR = 4,
|
|
LIBRA_ERRNO_SHADER_PARAMETER_ERROR = 5,
|
|
LIBRA_ERRNO_REFLECT_ERROR = 6,
|
|
LIBRA_ERRNO_RUNTIME_ERROR = 7,
|
|
};
|
|
#ifndef __cplusplus
|
|
typedef int32_t LIBRA_ERRNO;
|
|
#endif // __cplusplus
|
|
|
|
/// A Direct3D 11 filter chain.
|
|
typedef struct _filter_chain_d3d11 _filter_chain_d3d11;
|
|
|
|
/// An OpenGL filter chain.
|
|
typedef struct _filter_chain_gl _filter_chain_gl;
|
|
|
|
/// A Vulkan filter chain.
|
|
typedef struct _filter_chain_vk _filter_chain_vk;
|
|
|
|
/// The error type for librashader.
|
|
typedef struct _libra_error _libra_error;
|
|
|
|
/// A shader preset including all specified parameters, textures, and paths to specified shaders.
|
|
///
|
|
/// A shader preset can be used to create a filter chain runtime instance, or reflected to get
|
|
/// parameter metadata.
|
|
typedef struct _shader_preset _shader_preset;
|
|
|
|
/// A handle to a librashader error object.
|
|
typedef struct _libra_error *libra_error_t;
|
|
|
|
/// A handle to a shader preset object.
|
|
typedef struct _shader_preset *libra_shader_preset_t;
|
|
|
|
/// A preset parameter.
|
|
typedef struct libra_preset_param_t {
|
|
/// The name of the parameter
|
|
const char *name;
|
|
/// The description of the parameter.
|
|
const char *description;
|
|
/// The initial value the parameter is set to.
|
|
float initial;
|
|
/// The minimum value that the parameter can be set to.
|
|
float minimum;
|
|
/// The maximum value that the parameter can be set to.
|
|
float maximum;
|
|
/// The step by which this parameter can be incremented or decremented.
|
|
float step;
|
|
} libra_preset_param_t;
|
|
|
|
/// A list of preset parameters.
|
|
typedef struct libra_preset_param_list_t {
|
|
/// A pointer to the parameter
|
|
const struct libra_preset_param_t *parameters;
|
|
/// The number of parameters in the list.
|
|
uint64_t length;
|
|
/// For internal use only.
|
|
/// Changing this causes immediate undefined behaviour on freeing this parameter list.
|
|
uint64_t _internal_alloc;
|
|
} libra_preset_param_list_t;
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// A GL function loader that librashader needs to be initialized with.
|
|
typedef const void *(*libra_gl_loader_t)(const char*);
|
|
#endif
|
|
|
|
/// Options for filter chain creation.
|
|
typedef struct filter_chain_gl_opt_t {
|
|
/// The GLSL version. Should be at least `330`.
|
|
uint16_t gl_version;
|
|
/// Whether or not to use the Direct State Access APIs. Only available on OpenGL 4.5+.
|
|
bool use_dsa;
|
|
/// Whether or not to explicitly disable mipmap generation regardless of shader preset settings.
|
|
bool force_no_mipmaps;
|
|
} filter_chain_gl_opt_t;
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// A handle to a OpenGL filter chain.
|
|
typedef struct _filter_chain_gl *libra_gl_filter_chain_t;
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// OpenGL parameters for the source image.
|
|
typedef struct libra_source_image_gl_t {
|
|
/// A texture GLuint to the source image.
|
|
uint32_t handle;
|
|
/// The format of the source image.
|
|
uint32_t format;
|
|
/// The width of the source image.
|
|
uint32_t width;
|
|
/// The height of the source image.
|
|
uint32_t height;
|
|
} libra_source_image_gl_t;
|
|
#endif
|
|
|
|
/// Defines the output viewport for a rendered frame.
|
|
typedef struct libra_viewport_t {
|
|
/// The x offset in the viewport framebuffer to begin rendering from.
|
|
float x;
|
|
/// The y offset in the viewport framebuffer to begin rendering from.
|
|
float y;
|
|
/// The width of the viewport framebuffer.
|
|
uint32_t width;
|
|
/// The height of the viewport framebuffer.
|
|
uint32_t height;
|
|
} libra_viewport_t;
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// OpenGL parameters for the output framebuffer.
|
|
typedef struct libra_draw_framebuffer_gl_t {
|
|
/// A framebuffer GLuint to the output framebuffer.
|
|
uint32_t handle;
|
|
/// A texture GLuint to the logical buffer of the output framebuffer.
|
|
uint32_t texture;
|
|
/// The format of the output framebuffer.
|
|
uint32_t format;
|
|
} libra_draw_framebuffer_gl_t;
|
|
#endif
|
|
|
|
/// Options for each OpenGL shader frame.
|
|
typedef struct frame_gl_opt_t {
|
|
/// Whether or not to clear the history buffers.
|
|
bool clear_history;
|
|
/// The direction of the frame. 1 should be vertical.
|
|
int32_t frame_direction;
|
|
} frame_gl_opt_t;
|
|
|
|
/// Options for Direct3D11 filter chain creation.
|
|
typedef struct filter_chain_d3d11_opt_t {
|
|
/// Use a deferred context to record shader rendering state.
|
|
///
|
|
/// The deferred context will be executed on the immediate context
|
|
/// with `RenderContextState = true`.
|
|
bool use_deferred_context;
|
|
/// Whether or not to explicitly disable mipmap
|
|
/// generation regardless of shader preset settings.
|
|
bool force_no_mipmaps;
|
|
} filter_chain_d3d11_opt_t;
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// A handle to a Direct3D11 filter chain.
|
|
typedef struct _filter_chain_d3d11 *libra_d3d11_filter_chain_t;
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Direct3D 11 parameters for the source image.
|
|
typedef struct libra_source_image_d3d11_t {
|
|
/// A shader resource view into the source image
|
|
const ID3D11ShaderResourceView * handle;
|
|
/// The width of the source image.
|
|
uint32_t width;
|
|
/// The height of the source image.
|
|
uint32_t height;
|
|
} libra_source_image_d3d11_t;
|
|
#endif
|
|
|
|
/// Options for each Direct3D11 shader frame.
|
|
typedef struct frame_d3d11_opt_t {
|
|
/// Whether or not to clear the history buffers.
|
|
bool clear_history;
|
|
/// The direction of the frame. 1 should be vertical.
|
|
int32_t frame_direction;
|
|
} frame_d3d11_opt_t;
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Handles required to instantiate vulkan
|
|
typedef struct libra_device_vk_t {
|
|
/// A raw `VkPhysicalDevice` handle
|
|
/// for the physical device that will perform rendering.
|
|
VkPhysicalDevice physical_device;
|
|
/// A raw `VkInstance` handle
|
|
/// for the Vulkan instance that will perform rendering.
|
|
VkInstance instance;
|
|
/// A raw `VkDevice` handle
|
|
/// for the device attached to the instance that will perform rendering.
|
|
VkDevice device;
|
|
/// The entry loader for the Vulkan library.
|
|
PFN_vkGetInstanceProcAddr entry;
|
|
} libra_device_vk_t;
|
|
#endif
|
|
|
|
/// Options for filter chain creation.
|
|
typedef struct filter_chain_vk_opt_t {
|
|
/// The number of frames in flight to keep. If zero, defaults to three.
|
|
uint32_t frames_in_flight;
|
|
/// Whether or not to explicitly disable mipmap generation regardless of shader preset settings.
|
|
bool force_no_mipmaps;
|
|
/// Use explicit render pass objects It is recommended if possible to use dynamic rendering,
|
|
/// because render-pass mode will create new framebuffers per pass.
|
|
bool use_render_pass;
|
|
} filter_chain_vk_opt_t;
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// A handle to a Vulkan filter chain.
|
|
typedef struct _filter_chain_vk *libra_vk_filter_chain_t;
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Vulkan parameters for the source image.
|
|
typedef struct libra_image_vk_t {
|
|
/// A raw `VkImage` handle to the source image.
|
|
VkImage handle;
|
|
/// The `VkFormat` of the source image.
|
|
VkFormat format;
|
|
/// The width of the source image.
|
|
uint32_t width;
|
|
/// The height of the source image.
|
|
uint32_t height;
|
|
} libra_image_vk_t;
|
|
#endif
|
|
|
|
/// Options for each Vulkan shader frame.
|
|
typedef struct frame_vk_opt_t {
|
|
/// Whether or not to clear the history buffers.
|
|
bool clear_history;
|
|
/// The direction of the frame. 1 should be vertical.
|
|
int32_t frame_direction;
|
|
} frame_vk_opt_t;
|
|
|
|
/// Function pointer definition for
|
|
///libra_preset_create
|
|
typedef libra_error_t (*PFN_libra_preset_create)(const char *filename, libra_shader_preset_t *out);
|
|
|
|
/// Function pointer definition for
|
|
///libra_preset_free
|
|
typedef libra_error_t (*PFN_libra_preset_free)(libra_shader_preset_t *preset);
|
|
|
|
/// Function pointer definition for
|
|
///libra_preset_set_param
|
|
typedef libra_error_t (*PFN_libra_preset_set_param)(libra_shader_preset_t *preset,
|
|
const char *name,
|
|
float value);
|
|
|
|
/// Function pointer definition for
|
|
///libra_preset_get_param
|
|
typedef libra_error_t (*PFN_libra_preset_get_param)(libra_shader_preset_t *preset,
|
|
const char *name,
|
|
float *value);
|
|
|
|
/// Function pointer definition for
|
|
///libra_preset_print
|
|
typedef libra_error_t (*PFN_libra_preset_print)(libra_shader_preset_t *preset);
|
|
|
|
/// Function pointer definition for
|
|
///libra_preset_get_runtime_params
|
|
typedef libra_error_t (*PFN_libra_preset_get_runtime_params)(libra_shader_preset_t *preset,
|
|
struct libra_preset_param_list_t *out);
|
|
|
|
/// Function pointer definition for
|
|
///libra_preset_free_runtime_params
|
|
typedef libra_error_t (*PFN_libra_preset_free_runtime_params)(struct libra_preset_param_list_t preset);
|
|
|
|
/// Function pointer definition for libra_error_errno
|
|
typedef LIBRA_ERRNO (*PFN_libra_error_errno)(libra_error_t error);
|
|
|
|
/// Function pointer definition for libra_error_print
|
|
typedef int32_t (*PFN_libra_error_print)(libra_error_t error);
|
|
|
|
/// Function pointer definition for libra_error_free
|
|
typedef int32_t (*PFN_libra_error_free)(libra_error_t *error);
|
|
|
|
/// Function pointer definition for libra_error_write
|
|
typedef int32_t (*PFN_libra_error_write)(libra_error_t error, char **out);
|
|
|
|
/// Function pointer definition for libra_error_free_string
|
|
typedef int32_t (*PFN_libra_error_free_string)(char **out);
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Function pointer definition for
|
|
///libra_gl_init_context
|
|
typedef libra_error_t (*PFN_libra_gl_init_context)(libra_gl_loader_t loader);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Function pointer definition for
|
|
///libra_gl_filter_chain_create
|
|
typedef libra_error_t (*PFN_libra_gl_filter_chain_create)(libra_shader_preset_t *preset,
|
|
const struct filter_chain_gl_opt_t *options,
|
|
libra_gl_filter_chain_t *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Function pointer definition for
|
|
///libra_gl_filter_chain_frame
|
|
typedef libra_error_t (*PFN_libra_gl_filter_chain_frame)(libra_gl_filter_chain_t *chain,
|
|
size_t frame_count,
|
|
struct libra_source_image_gl_t image,
|
|
struct libra_viewport_t viewport,
|
|
struct libra_draw_framebuffer_gl_t out,
|
|
const float *mvp,
|
|
const struct frame_gl_opt_t *opt);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Function pointer definition for
|
|
///libra_gl_filter_chain_set_param
|
|
typedef libra_error_t (*PFN_libra_gl_filter_chain_set_param)(libra_gl_filter_chain_t *chain,
|
|
const char *param_name,
|
|
float value);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Function pointer definition for
|
|
///libra_gl_filter_chain_get_param
|
|
typedef libra_error_t (*PFN_libra_gl_filter_chain_get_param)(libra_gl_filter_chain_t *chain,
|
|
const char *param_name,
|
|
float *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Function pointer definition for
|
|
///libra_gl_filter_chain_set_active_pass_count
|
|
typedef libra_error_t (*PFN_libra_gl_filter_chain_set_active_pass_count)(libra_gl_filter_chain_t *chain,
|
|
uint32_t value);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Function pointer definition for
|
|
///libra_gl_filter_chain_get_active_pass_count
|
|
typedef libra_error_t (*PFN_libra_gl_filter_chain_get_active_pass_count)(libra_gl_filter_chain_t *chain,
|
|
uint32_t *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Function pointer definition for
|
|
///libra_gl_filter_chain_free
|
|
typedef libra_error_t (*PFN_libra_gl_filter_chain_free)(libra_gl_filter_chain_t *chain);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Function pointer definition for
|
|
///libra_d3d11_filter_chain_create
|
|
typedef libra_error_t (*PFN_libra_d3d11_filter_chain_create)(libra_shader_preset_t *preset,
|
|
const struct filter_chain_d3d11_opt_t *options,
|
|
const ID3D11Device * device,
|
|
libra_d3d11_filter_chain_t *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Function pointer definition for
|
|
///libra_d3d11_filter_chain_frame
|
|
typedef libra_error_t (*PFN_libra_d3d11_filter_chain_frame)(libra_d3d11_filter_chain_t *chain,
|
|
size_t frame_count,
|
|
struct libra_source_image_d3d11_t image,
|
|
struct libra_viewport_t viewport,
|
|
const ID3D11RenderTargetView * out,
|
|
const float *mvp,
|
|
const struct frame_d3d11_opt_t *opt);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Function pointer definition for
|
|
///libra_d3d11_filter_chain_set_param
|
|
typedef libra_error_t (*PFN_libra_d3d11_filter_chain_set_param)(libra_d3d11_filter_chain_t *chain,
|
|
const char *param_name,
|
|
float value);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Function pointer definition for
|
|
///libra_d3d11_filter_chain_get_param
|
|
typedef libra_error_t (*PFN_libra_d3d11_filter_chain_get_param)(libra_d3d11_filter_chain_t *chain,
|
|
const char *param_name,
|
|
float *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Function pointer definition for
|
|
///libra_d3d11_filter_chain_set_active_pass_count
|
|
typedef libra_error_t (*PFN_libra_d3d11_filter_chain_set_active_pass_count)(libra_d3d11_filter_chain_t *chain,
|
|
uint32_t value);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Function pointer definition for
|
|
///libra_d3d11_filter_chain_get_active_pass_count
|
|
typedef libra_error_t (*PFN_libra_d3d11_filter_chain_get_active_pass_count)(libra_d3d11_filter_chain_t *chain,
|
|
uint32_t *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Function pointer definition for
|
|
///libra_d3d11_filter_chain_free
|
|
typedef libra_error_t (*PFN_libra_d3d11_filter_chain_free)(libra_d3d11_filter_chain_t *chain);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Function pointer definition for
|
|
///libra_vk_filter_chain_create
|
|
typedef libra_error_t (*PFN_libra_vk_filter_chain_create)(struct libra_device_vk_t vulkan,
|
|
libra_shader_preset_t *preset,
|
|
const struct filter_chain_vk_opt_t *options,
|
|
libra_vk_filter_chain_t *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Function pointer definition for
|
|
///libra_vk_filter_chain_frame
|
|
typedef libra_error_t (*PFN_libra_vk_filter_chain_frame)(libra_vk_filter_chain_t *chain,
|
|
VkCommandBuffer command_buffer,
|
|
size_t frame_count,
|
|
struct libra_image_vk_t image,
|
|
struct libra_viewport_t viewport,
|
|
struct libra_image_vk_t out,
|
|
const float *mvp,
|
|
const struct frame_vk_opt_t *opt);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Function pointer definition for
|
|
///libra_vk_filter_chain_set_param
|
|
typedef libra_error_t (*PFN_libra_vk_filter_chain_set_param)(libra_vk_filter_chain_t *chain,
|
|
const char *param_name,
|
|
float value);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Function pointer definition for
|
|
///libra_vk_filter_chain_get_param
|
|
typedef libra_error_t (*PFN_libra_vk_filter_chain_get_param)(libra_vk_filter_chain_t *chain,
|
|
const char *param_name,
|
|
float *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Function pointer definition for
|
|
///libra_vk_filter_chain_set_active_pass_count
|
|
typedef libra_error_t (*PFN_libra_vk_filter_chain_set_active_pass_count)(libra_vk_filter_chain_t *chain,
|
|
uint32_t value);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Function pointer definition for
|
|
///libra_vk_filter_chain_get_active_pass_count
|
|
typedef libra_error_t (*PFN_libra_vk_filter_chain_get_active_pass_count)(libra_vk_filter_chain_t *chain,
|
|
uint32_t *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Function pointer definition for
|
|
///libra_vk_filter_chain_free
|
|
typedef libra_error_t (*PFN_libra_vk_filter_chain_free)(libra_vk_filter_chain_t *chain);
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif // __cplusplus
|
|
|
|
/// Get the error code corresponding to this error object.
|
|
///
|
|
/// ## Safety
|
|
/// - `error` must be valid and initialized.
|
|
LIBRA_ERRNO libra_error_errno(libra_error_t error);
|
|
|
|
/// Print the error message.
|
|
///
|
|
/// If `error` is null, this function does nothing and returns 1. Otherwise, this function returns 0.
|
|
/// ## Safety
|
|
/// - `error` must be a valid and initialized instance of `libra_error_t`.
|
|
int32_t libra_error_print(libra_error_t error);
|
|
|
|
/// Frees any internal state kept by the error.
|
|
///
|
|
/// If `error` is null, this function does nothing and returns 1. Otherwise, this function returns 0.
|
|
/// The resulting error object becomes null.
|
|
/// ## Safety
|
|
/// - `error` must be null or a pointer to a valid and initialized instance of `libra_error_t`.
|
|
int32_t libra_error_free(libra_error_t *error);
|
|
|
|
/// Writes the error message into `out`
|
|
///
|
|
/// If `error` is null, this function does nothing and returns 1. Otherwise, this function returns 0.
|
|
/// ## Safety
|
|
/// - `error` must be a valid and initialized instance of `libra_error_t`.
|
|
/// - `out` must be a non-null pointer. The resulting string must not be modified.
|
|
int32_t libra_error_write(libra_error_t error,
|
|
char **out);
|
|
|
|
/// Frees an error string previously allocated by `libra_error_write`.
|
|
///
|
|
/// After freeing, the pointer will be set to null.
|
|
/// ## Safety
|
|
/// - If `libra_error_write` is not null, it must point to a string previously returned by `libra_error_write`.
|
|
/// Attempting to free anything else, including strings or objects from other librashader functions, is immediate
|
|
/// Undefined Behaviour.
|
|
int32_t libra_error_free_string(char **out);
|
|
|
|
/// Load a preset.
|
|
///
|
|
/// ## Safety
|
|
/// - `filename` must be either null or a valid, aligned pointer to a string path to the shader preset.
|
|
/// - `out` must be either null, or an aligned pointer to an uninitialized or invalid `libra_shader_preset_t`.
|
|
/// ## Returns
|
|
/// - If any parameters are null, `out` is unchanged, and this function returns `LIBRA_ERR_INVALID_PARAMETER`.
|
|
libra_error_t libra_preset_create(const char *filename,
|
|
libra_shader_preset_t *out);
|
|
|
|
/// Free the preset.
|
|
///
|
|
/// If `preset` is null, this function does nothing. The resulting value in `preset` then becomes
|
|
/// null.
|
|
///
|
|
/// ## Safety
|
|
/// - `preset` must be a valid and aligned pointer to a shader preset.
|
|
libra_error_t libra_preset_free(libra_shader_preset_t *preset);
|
|
|
|
/// Set the value of the parameter in the preset.
|
|
///
|
|
/// ## Safety
|
|
/// - `preset` must be null or a valid and aligned pointer to a shader preset.
|
|
/// - `name` must be null or a valid and aligned pointer to a string.
|
|
libra_error_t libra_preset_set_param(libra_shader_preset_t *preset, const char *name, float value);
|
|
|
|
/// Get the value of the parameter as set in the preset.
|
|
///
|
|
/// ## Safety
|
|
/// - `preset` must be null or a valid and aligned pointer to a shader preset.
|
|
/// - `name` must be null or a valid and aligned pointer to a string.
|
|
/// - `value` may be a pointer to a uninitialized `float`.
|
|
libra_error_t libra_preset_get_param(libra_shader_preset_t *preset, const char *name, float *value);
|
|
|
|
/// Pretty print the shader preset.
|
|
///
|
|
/// ## Safety
|
|
/// - `preset` must be null or a valid and aligned pointer to a shader preset.
|
|
libra_error_t libra_preset_print(libra_shader_preset_t *preset);
|
|
|
|
/// Get a list of runtime parameters.
|
|
///
|
|
/// ## Safety
|
|
/// - `preset` must be null or a valid and aligned pointer to a shader preset.
|
|
/// - `out` must be an aligned pointer to a `libra_preset_parameter_list_t`.
|
|
/// - The output struct should be treated as immutable. Mutating any struct fields
|
|
/// in the returned struct may at best cause memory leaks, and at worse
|
|
/// cause undefined behaviour when later freed.
|
|
/// - It is safe to call `libra_preset_get_runtime_params` multiple times, however
|
|
/// the output struct must only be freed once per call.
|
|
libra_error_t libra_preset_get_runtime_params(libra_shader_preset_t *preset,
|
|
struct libra_preset_param_list_t *out);
|
|
|
|
/// Free the runtime parameters.
|
|
///
|
|
/// Unlike the other `free` functions provided by librashader,
|
|
/// `libra_preset_free_runtime_params` takes the struct directly.
|
|
/// The caller must take care to maintain the lifetime of any pointers
|
|
/// contained within the input `libra_preset_param_list_t`.
|
|
///
|
|
/// ## Safety
|
|
/// - Any pointers rooted at `parameters` becomes invalid after this function returns,
|
|
/// including any strings accessible via the input `libra_preset_param_list_t`.
|
|
/// The caller must ensure that there are no live pointers, aliased or unaliased,
|
|
/// to data accessible via the input `libra_preset_param_list_t`.
|
|
///
|
|
/// - Accessing any data pointed to via the input `libra_preset_param_list_t` after it
|
|
/// has been freed is a use-after-free and is immediate undefined behaviour.
|
|
///
|
|
/// - If any struct fields of the input `libra_preset_param_list_t` was modified from
|
|
/// their values given after `libra_preset_get_runtime_params`, this may result
|
|
/// in undefined behaviour.
|
|
libra_error_t libra_preset_free_runtime_params(struct libra_preset_param_list_t preset);
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Initialize the OpenGL Context for librashader.
|
|
///
|
|
/// This only has to be done once throughout the lifetime of the application,
|
|
/// unless for whatever reason you switch OpenGL loaders mid-flight.
|
|
///
|
|
/// ## Safety
|
|
/// Attempting to create a filter chain will fail if the GL context is not initialized.
|
|
///
|
|
/// Reinitializing the OpenGL context with a different loader immediately invalidates previous filter
|
|
/// chain objects, and drawing with them causes immediate undefined behaviour.
|
|
libra_error_t libra_gl_init_context(libra_gl_loader_t loader);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Create the filter chain given the shader preset.
|
|
///
|
|
/// The shader preset is immediately invalidated and must be recreated after
|
|
/// the filter chain is created.
|
|
///
|
|
/// ## Safety:
|
|
/// - `preset` must be either null, or valid and aligned.
|
|
/// - `options` must be either null, or valid and aligned.
|
|
/// - `out` must be aligned, but may be null, invalid, or uninitialized.
|
|
libra_error_t libra_gl_filter_chain_create(libra_shader_preset_t *preset,
|
|
const struct filter_chain_gl_opt_t *options,
|
|
libra_gl_filter_chain_t *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Draw a frame with the given parameters for the given filter chain.
|
|
///
|
|
/// ## Safety
|
|
/// - `chain` may be null, invalid, but not uninitialized. If `chain` is null or invalid, this
|
|
/// function will return an error.
|
|
/// - `mvp` may be null, or if it is not null, must be an aligned pointer to 16 consecutive `float`
|
|
/// values for the model view projection matrix.
|
|
/// - `opt` may be null, or if it is not null, must be an aligned pointer to a valid `frame_gl_opt_t`
|
|
/// struct.
|
|
libra_error_t libra_gl_filter_chain_frame(libra_gl_filter_chain_t *chain,
|
|
size_t frame_count,
|
|
struct libra_source_image_gl_t image,
|
|
struct libra_viewport_t viewport,
|
|
struct libra_draw_framebuffer_gl_t out,
|
|
const float *mvp,
|
|
const struct frame_gl_opt_t *opt);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Sets a parameter for the filter chain.
|
|
///
|
|
/// If the parameter does not exist, returns an error.
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_gl_filter_chain_t`.
|
|
/// - `param_name` must be either null or a null terminated string.
|
|
libra_error_t libra_gl_filter_chain_set_param(libra_gl_filter_chain_t *chain,
|
|
const char *param_name,
|
|
float value);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Gets a parameter for the filter chain.
|
|
///
|
|
/// If the parameter does not exist, returns an error.
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_gl_filter_chain_t`.
|
|
/// - `param_name` must be either null or a null terminated string.
|
|
libra_error_t libra_gl_filter_chain_get_param(libra_gl_filter_chain_t *chain,
|
|
const char *param_name,
|
|
float *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Sets the number of active passes for this chain.
|
|
///
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_gl_filter_chain_t`.
|
|
libra_error_t libra_gl_filter_chain_set_active_pass_count(libra_gl_filter_chain_t *chain,
|
|
uint32_t value);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Gets the number of active passes for this chain.
|
|
///
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_gl_filter_chain_t`.
|
|
libra_error_t libra_gl_filter_chain_get_active_pass_count(libra_gl_filter_chain_t *chain,
|
|
uint32_t *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_OPENGL)
|
|
/// Free a GL filter chain.
|
|
///
|
|
/// The resulting value in `chain` then becomes null.
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_gl_filter_chain_t`.
|
|
libra_error_t libra_gl_filter_chain_free(libra_gl_filter_chain_t *chain);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Create the filter chain given the shader preset.
|
|
///
|
|
/// The shader preset is immediately invalidated and must be recreated after
|
|
/// the filter chain is created.
|
|
///
|
|
/// ## Safety:
|
|
/// - `preset` must be either null, or valid and aligned.
|
|
/// - `options` must be either null, or valid and aligned.
|
|
/// - `device` must not be null.
|
|
/// - `out` must be aligned, but may be null, invalid, or uninitialized.
|
|
libra_error_t libra_d3d11_filter_chain_create(libra_shader_preset_t *preset,
|
|
const struct filter_chain_d3d11_opt_t *options,
|
|
const ID3D11Device * device,
|
|
libra_d3d11_filter_chain_t *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Draw a frame with the given parameters for the given filter chain.
|
|
///
|
|
/// ## Safety
|
|
/// - `chain` may be null, invalid, but not uninitialized. If `chain` is null or invalid, this
|
|
/// function will return an error.
|
|
/// - `mvp` may be null, or if it is not null, must be an aligned pointer to 16 consecutive `float`
|
|
/// values for the model view projection matrix.
|
|
/// - `opt` may be null, or if it is not null, must be an aligned pointer to a valid `frame_gl_opt_t`
|
|
/// struct.
|
|
/// - `out` must not be null.
|
|
/// - `image.handle` must not be null.
|
|
libra_error_t libra_d3d11_filter_chain_frame(libra_d3d11_filter_chain_t *chain,
|
|
size_t frame_count,
|
|
struct libra_source_image_d3d11_t image,
|
|
struct libra_viewport_t viewport,
|
|
const ID3D11RenderTargetView * out,
|
|
const float *mvp,
|
|
const struct frame_d3d11_opt_t *opt);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Sets a parameter for the filter chain.
|
|
///
|
|
/// If the parameter does not exist, returns an error.
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_d3d11_filter_chain_t`.
|
|
/// - `param_name` must be either null or a null terminated string.
|
|
libra_error_t libra_d3d11_filter_chain_set_param(libra_d3d11_filter_chain_t *chain,
|
|
const char *param_name,
|
|
float value);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Gets a parameter for the filter chain.
|
|
///
|
|
/// If the parameter does not exist, returns an error.
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_d3d11_filter_chain_t`.
|
|
/// - `param_name` must be either null or a null terminated string.
|
|
libra_error_t libra_d3d11_filter_chain_get_param(libra_d3d11_filter_chain_t *chain,
|
|
const char *param_name,
|
|
float *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Sets the number of active passes for this chain.
|
|
///
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_d3d11_filter_chain_t`.
|
|
libra_error_t libra_d3d11_filter_chain_set_active_pass_count(libra_d3d11_filter_chain_t *chain,
|
|
uint32_t value);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Gets the number of active passes for this chain.
|
|
///
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_d3d11_filter_chain_t`.
|
|
libra_error_t libra_d3d11_filter_chain_get_active_pass_count(libra_d3d11_filter_chain_t *chain,
|
|
uint32_t *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_D3D11)
|
|
/// Free a D3D11 filter chain.
|
|
///
|
|
/// The resulting value in `chain` then becomes null.
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_d3d11_filter_chain_t`.
|
|
libra_error_t libra_d3d11_filter_chain_free(libra_d3d11_filter_chain_t *chain);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Create the filter chain given the shader preset.
|
|
///
|
|
/// The shader preset is immediately invalidated and must be recreated after
|
|
/// the filter chain is created.
|
|
///
|
|
/// ## Safety:
|
|
/// - The handles provided in `vulkan` must be valid for the command buffers that
|
|
/// `libra_vk_filter_chain_frame` will write to. Namely, the VkDevice must have been
|
|
/// created with the `VK_KHR_dynamic_rendering` extension.
|
|
/// - `preset` must be either null, or valid and aligned.
|
|
/// - `options` must be either null, or valid and aligned.
|
|
/// - `out` must be aligned, but may be null, invalid, or uninitialized.
|
|
libra_error_t libra_vk_filter_chain_create(struct libra_device_vk_t vulkan,
|
|
libra_shader_preset_t *preset,
|
|
const struct filter_chain_vk_opt_t *options,
|
|
libra_vk_filter_chain_t *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Records rendering commands for a frame with the given parameters for the given filter chain
|
|
/// to the input command buffer.
|
|
///
|
|
/// librashader will not do any queue submissions.
|
|
///
|
|
/// ## Safety
|
|
/// - `libra_vk_filter_chain_frame` **must not be called within a RenderPass**.
|
|
/// - `command_buffer` must be a valid handle to a `VkCommandBuffer` that is ready for recording.
|
|
/// - `chain` may be null, invalid, but not uninitialized. If `chain` is null or invalid, this
|
|
/// function will return an error.
|
|
/// - `mvp` may be null, or if it is not null, must be an aligned pointer to 16 consecutive `float`
|
|
/// values for the model view projection matrix.
|
|
/// - `opt` may be null, or if it is not null, must be an aligned pointer to a valid `frame_vk_opt_t`
|
|
/// struct.
|
|
libra_error_t libra_vk_filter_chain_frame(libra_vk_filter_chain_t *chain,
|
|
VkCommandBuffer command_buffer,
|
|
size_t frame_count,
|
|
struct libra_image_vk_t image,
|
|
struct libra_viewport_t viewport,
|
|
struct libra_image_vk_t out,
|
|
const float *mvp,
|
|
const struct frame_vk_opt_t *opt);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Sets a parameter for the filter chain.
|
|
///
|
|
/// If the parameter does not exist, returns an error.
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_vk_filter_chain_t`.
|
|
/// - `param_name` must be either null or a null terminated string.
|
|
libra_error_t libra_vk_filter_chain_set_param(libra_vk_filter_chain_t *chain,
|
|
const char *param_name,
|
|
float value);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Gets a parameter for the filter chain.
|
|
///
|
|
/// If the parameter does not exist, returns an error.
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_vk_filter_chain_t`.
|
|
/// - `param_name` must be either null or a null terminated string.
|
|
libra_error_t libra_vk_filter_chain_get_param(libra_vk_filter_chain_t *chain,
|
|
const char *param_name,
|
|
float *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Sets the number of active passes for this chain.
|
|
///
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_vk_filter_chain_t`.
|
|
libra_error_t libra_vk_filter_chain_set_active_pass_count(libra_vk_filter_chain_t *chain,
|
|
uint32_t value);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Gets the number of active passes for this chain.
|
|
///
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_vk_filter_chain_t`.
|
|
libra_error_t libra_vk_filter_chain_get_active_pass_count(libra_vk_filter_chain_t *chain,
|
|
uint32_t *out);
|
|
#endif
|
|
|
|
#if defined(LIBRA_RUNTIME_VULKAN)
|
|
/// Free a Vulkan filter chain.
|
|
///
|
|
/// The resulting value in `chain` then becomes null.
|
|
/// ## Safety
|
|
/// - `chain` must be either null or a valid and aligned pointer to an initialized `libra_vk_filter_chain_t`.
|
|
libra_error_t libra_vk_filter_chain_free(libra_vk_filter_chain_t *chain);
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
} // extern "C"
|
|
#endif // __cplusplus
|
|
|
|
#endif /* __LIBRASHADER_H__ */
|