Merge pull request #8 from MirkoCovizzi/master
Add OpenGL context on Windows
This commit is contained in:
Mirko Covizzi
GitHub
commit
472c7a00cb
|
|
@ -15,7 +15,8 @@ edition = "2018"
|
|||
xcb = { version = "0.9", features = ["thread", "xlib_xcb", "dri2"] }
|
||||
|
||||
[target.'cfg(target_os="windows")'.dependencies]
|
||||
winapi = { version = "0.3.8", features = ["libloaderapi", "winuser", "windef", "minwindef", "guiddef", "combaseapi"] }
|
||||
winapi = { version = "0.3.8", features = ["libloaderapi", "winuser", "windef", "minwindef", "guiddef", "combaseapi", "wingdi"] }
|
||||
gl = "0.14.0"
|
||||
|
||||
[target.'cfg(target_os="macos")'.dependencies]
|
||||
cocoa = "0.20.1"
|
||||
|
|
|
|||
|
|
@ -1,15 +1,20 @@
|
|||
extern crate winapi;
|
||||
|
||||
use std::ffi::CString;
|
||||
use std::ptr::null_mut;
|
||||
|
||||
use self::winapi::_core::mem::MaybeUninit;
|
||||
use self::winapi::shared::guiddef::GUID;
|
||||
use self::winapi::shared::minwindef::{LPARAM, LPVOID, LRESULT, UINT, WPARAM};
|
||||
use self::winapi::shared::windef::{HBRUSH, HICON, HMENU, HWND};
|
||||
use self::winapi::shared::minwindef::{LPARAM, LRESULT, UINT, WPARAM};
|
||||
use self::winapi::shared::windef::{HGLRC, HWND};
|
||||
use self::winapi::um::combaseapi::CoCreateGuid;
|
||||
use self::winapi::um::libloaderapi::GetModuleHandleA;
|
||||
use self::winapi::um::libloaderapi::{GetProcAddress, LoadLibraryA};
|
||||
use self::winapi::um::wingdi::{
|
||||
wglCreateContext, wglMakeCurrent, ChoosePixelFormat, SetPixelFormat, SwapBuffers,
|
||||
PFD_DOUBLEBUFFER, PFD_DRAW_TO_WINDOW, PFD_MAIN_PLANE, PFD_SUPPORT_OPENGL, PFD_TYPE_RGBA,
|
||||
PIXELFORMATDESCRIPTOR,
|
||||
};
|
||||
use self::winapi::um::winuser::{
|
||||
CreateWindowExA, DefWindowProcA, DispatchMessageA, PeekMessageA, PostQuitMessage,
|
||||
CreateWindowExA, DefWindowProcA, DispatchMessageA, GetDC, PeekMessageA, PostQuitMessage,
|
||||
RegisterClassA, TranslateMessage, CS_HREDRAW, CS_OWNDC, CS_VREDRAW, CW_USEDEFAULT, MSG,
|
||||
PM_REMOVE, WM_DESTROY, WM_QUIT, WNDCLASSA, WS_OVERLAPPEDWINDOW, WS_VISIBLE,
|
||||
};
|
||||
|
|
@ -19,10 +24,11 @@ use crate::WindowOpenOptions;
|
|||
pub struct Window;
|
||||
|
||||
impl Window {
|
||||
// todo: we should decide this interface
|
||||
pub fn open(options: WindowOpenOptions) -> Self {
|
||||
unsafe {
|
||||
// We generate a unique name for the new window class to prevent name collisions
|
||||
let mut guid: GUID = MaybeUninit::uninit().assume_init();
|
||||
let mut guid: GUID = std::mem::zeroed();
|
||||
CoCreateGuid(&mut guid);
|
||||
let class_name = format!(
|
||||
"Baseview-{:0X}-{:0X}-{:0X}-{:0X}{:0X}-{:0X}{:0X}{:0X}{:0X}{:0X}{:0X}\0",
|
||||
|
|
@ -39,23 +45,22 @@ impl Window {
|
|||
guid.Data4[7]
|
||||
);
|
||||
|
||||
let hinstance = GetModuleHandleA(0 as *const i8);
|
||||
let wnd_class = WNDCLASSA {
|
||||
// todo: for OpenGL, will use it later
|
||||
style: CS_OWNDC | CS_HREDRAW | CS_VREDRAW,
|
||||
lpfnWndProc: Some(wnd_proc),
|
||||
hInstance: hinstance,
|
||||
hInstance: null_mut(),
|
||||
lpszClassName: class_name.as_ptr() as *const i8,
|
||||
cbClsExtra: 0,
|
||||
cbWndExtra: 0,
|
||||
hIcon: 0 as HICON,
|
||||
hCursor: 0 as HICON,
|
||||
hbrBackground: 0 as HBRUSH,
|
||||
lpszMenuName: 0 as *const i8,
|
||||
hIcon: null_mut(),
|
||||
hCursor: null_mut(),
|
||||
hbrBackground: null_mut(),
|
||||
lpszMenuName: std::ptr::null::<i8>(),
|
||||
};
|
||||
RegisterClassA(&wnd_class);
|
||||
|
||||
let _hwnd = CreateWindowExA(
|
||||
let hwnd = CreateWindowExA(
|
||||
0,
|
||||
class_name.as_ptr() as *const i8,
|
||||
(options.title.to_owned() + "\0").as_ptr() as *const i8,
|
||||
|
|
@ -66,16 +71,60 @@ impl Window {
|
|||
// todo: check if usize fits into i32
|
||||
options.width as i32,
|
||||
options.height as i32,
|
||||
0 as HWND,
|
||||
0 as HMENU,
|
||||
hinstance,
|
||||
0 as LPVOID,
|
||||
null_mut(),
|
||||
null_mut(),
|
||||
null_mut(),
|
||||
null_mut(),
|
||||
);
|
||||
|
||||
let hdc = GetDC(hwnd);
|
||||
|
||||
let mut pfd: PIXELFORMATDESCRIPTOR = std::mem::zeroed();
|
||||
pfd.nSize = std::mem::size_of::<PIXELFORMATDESCRIPTOR>() as u16;
|
||||
pfd.nVersion = 1;
|
||||
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
|
||||
pfd.iPixelType = PFD_TYPE_RGBA;
|
||||
pfd.cColorBits = 32;
|
||||
// todo: ask wrl why 24 instead of 32?
|
||||
pfd.cDepthBits = 24;
|
||||
pfd.cStencilBits = 8;
|
||||
pfd.iLayerType = PFD_MAIN_PLANE;
|
||||
|
||||
let pf_id: i32 = ChoosePixelFormat(hdc, &pfd);
|
||||
if pf_id == 0 {
|
||||
return Window;
|
||||
}
|
||||
|
||||
if SetPixelFormat(hdc, pf_id, &pfd) == 0 {
|
||||
return Window;
|
||||
}
|
||||
|
||||
let gl_context: HGLRC = wglCreateContext(hdc);
|
||||
if gl_context == 0 as HGLRC {
|
||||
return Window;
|
||||
}
|
||||
|
||||
if wglMakeCurrent(hdc, gl_context) == 0 {
|
||||
return Window;
|
||||
}
|
||||
|
||||
let h = LoadLibraryA("opengl32.dll\0".as_ptr() as *const i8);
|
||||
gl::load_with(|symbol| {
|
||||
let symbol = CString::new(symbol.as_bytes()).unwrap();
|
||||
let symbol = symbol.as_ptr();
|
||||
GetProcAddress(h, symbol) as *const _
|
||||
});
|
||||
|
||||
// todo: decide what to do with the message pump
|
||||
loop {
|
||||
if !handle_msg(null_mut()) {
|
||||
break;
|
||||
}
|
||||
|
||||
// todo: pass callback rendering function instead
|
||||
gl::ClearColor(0.3, 0.8, 0.3, 1.0);
|
||||
gl::Clear(gl::COLOR_BUFFER_BIT);
|
||||
SwapBuffers(hdc);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -85,7 +134,7 @@ impl Window {
|
|||
|
||||
fn handle_msg(_window: HWND) -> bool {
|
||||
unsafe {
|
||||
let mut msg: MSG = MaybeUninit::uninit().assume_init();
|
||||
let mut msg: MSG = std::mem::zeroed();
|
||||
loop {
|
||||
if PeekMessageA(&mut msg, 0 as HWND, 0, 0, PM_REMOVE) == 0 {
|
||||
return true;
|
||||
|
|
@ -113,5 +162,5 @@ unsafe extern "system" fn wnd_proc(
|
|||
return DefWindowProcA(hwnd, msg, w_param, l_param);
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
0
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue