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OpenGL ES support for Windows

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This commit is contained in:
Gabriel Jacobo 2013-11-22 13:24:53 -03:00
parent 239ba53a4c
commit f21d3e7e2a
32 changed files with 6741 additions and 1210 deletions
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66
src/video/windows/SDL_windowsopengl.c
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@ -25,6 +25,7 @@
#include "SDL_assert.h"
#include "SDL_loadso.h"
#include "SDL_windowsvideo.h"
#include "SDL_windowsopengles.h"
/* WGL implementation of SDL OpenGL support */
@ -323,11 +324,35 @@ HasExtension(const char *extension, const char *extensions)
return SDL_FALSE;
}
static void
WIN_GL_InitExtensions(_THIS, HDC hdc)
void
WIN_GL_InitExtensions(_THIS)
{
const char *(WINAPI * wglGetExtensionsStringARB) (HDC) = 0;
const char *extensions;
HWND hwnd;
HDC hdc;
HGLRC hglrc;
PIXELFORMATDESCRIPTOR pfd;
hwnd =
CreateWindow(SDL_Appname, SDL_Appname, (WS_POPUP | WS_DISABLED), 0, 0,
10, 10, NULL, NULL, SDL_Instance, NULL);
if (!hwnd) {
return;
}
WIN_PumpEvents(_this);
hdc = GetDC(hwnd);
WIN_GL_SetupPixelFormat(_this, &pfd);
SetPixelFormat(hdc, ChoosePixelFormat(hdc, &pfd), &pfd);
hglrc = _this->gl_data->wglCreateContext(hdc);
if (!hglrc) {
return;
}
_this->gl_data->wglMakeCurrent(hdc, hglrc);
wglGetExtensionsStringARB = (const char *(WINAPI *) (HDC))
_this->gl_data->wglGetProcAddress("wglGetExtensionsStringARB");
@ -369,6 +394,18 @@ WIN_GL_InitExtensions(_THIS, HDC hdc)
_this->gl_data->wglSwapIntervalEXT = NULL;
_this->gl_data->wglGetSwapIntervalEXT = NULL;
}
/* Check for WGL_EXT_create_context_es2_profile */
_this->gl_data->HAS_WGL_EXT_create_context_es2_profile = SDL_FALSE;
if (HasExtension("WGL_EXT_create_context_es2_profile", extensions)) {
_this->gl_data->HAS_WGL_EXT_create_context_es2_profile = SDL_TRUE;
}
_this->gl_data->wglMakeCurrent(hdc, NULL);
_this->gl_data->wglDeleteContext(hglrc);
ReleaseDC(hwnd, hdc);
DestroyWindow(hwnd);
WIN_PumpEvents(_this);
}
static int
@ -396,8 +433,6 @@ WIN_GL_ChoosePixelFormatARB(_THIS, int *iAttribs, float *fAttribs)
if (hglrc) {
_this->gl_data->wglMakeCurrent(hdc, hglrc);
WIN_GL_InitExtensions(_this, hdc);
if (_this->gl_data->HAS_WGL_ARB_pixel_format) {
_this->gl_data->wglChoosePixelFormatARB(hdc, iAttribs, fAttribs,
1, &pixel_format,
@ -548,6 +583,27 @@ WIN_GL_CreateContext(_THIS, SDL_Window * window)
HDC hdc = ((SDL_WindowData *) window->driverdata)->hdc;
HGLRC context, share_context;
if (_this->gl_config.profile_mask == SDL_GL_CONTEXT_PROFILE_ES &&
!_this->gl_data->HAS_WGL_EXT_create_context_es2_profile) {
/* Switch to EGL based functions */
WIN_GL_UnloadLibrary(_this);
_this->GL_LoadLibrary = WIN_GLES_LoadLibrary;
_this->GL_GetProcAddress = WIN_GLES_GetProcAddress;
_this->GL_UnloadLibrary = WIN_GLES_UnloadLibrary;
_this->GL_CreateContext = WIN_GLES_CreateContext;
_this->GL_MakeCurrent = WIN_GLES_MakeCurrent;
_this->GL_SetSwapInterval = WIN_GLES_SetSwapInterval;
_this->GL_GetSwapInterval = WIN_GLES_GetSwapInterval;
_this->GL_SwapWindow = WIN_GLES_SwapWindow;
_this->GL_DeleteContext = WIN_GLES_DeleteContext;
if (WIN_GLES_LoadLibrary(_this, NULL) != 0) {
return NULL;
}
return WIN_GLES_CreateContext(_this, window);
}
if (_this->gl_config.share_with_current_context) {
share_context = (HGLRC)SDL_GL_GetCurrentContext();
} else {
@ -622,8 +678,6 @@ WIN_GL_CreateContext(_THIS, SDL_Window * window)
return NULL;
}
WIN_GL_InitExtensions(_this, hdc);
return context;
}