bool InitGLCapture()
{
bool bSuccess = false;
HMODULE hGL = GetModuleHandle(TEXT("opengl32.dll"));
if(hGL)
{
pglReadBuffer = (GLREADBUFFERPROC) GetProcAddress(hGL, "glReadBuffer");
pglReadPixels = (GLREADPIXELSPROC) GetProcAddress(hGL, "glReadPixels");
pglGetError = (GLGETERRORPROC) GetProcAddress(hGL, "glGetError");
pwglSwapLayerBuffers= (WGLSWAPLAYERBUFFERSPROC) GetProcAddress(hGL, "wglSwapLayerBuffers");
pwglDeleteContext = (WGLDELETECONTEXTPROC) GetProcAddress(hGL, "wglDeleteContext");
pwglGetProcAddress = (WGLGETPROCADDRESSPROC) GetProcAddress(hGL, "wglGetProcAddress");
pwglMakeCurrent = (WGLMAKECURRENTPROC) GetProcAddress(hGL, "wglMakeCurrent");
pwglCreateContext = (WGLCREATECONTEXTPROC) GetProcAddress(hGL, "wglCreateContext");
if( !pglReadBuffer || !pglReadPixels || !pglGetError || !pwglSwapLayerBuffers || !pwglDeleteContext ||
!pwglGetProcAddress || !pwglMakeCurrent || !pwglCreateContext)
{
return false;
}
HDC hDC = CreateDC(TEXT("DISPLAY"), NULL, NULL, NULL);
if(hDC)
{
PIXELFORMATDESCRIPTOR pfd;
ZeroMemory(&pfd, sizeof(pfd));
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 32;
pfd.cDepthBits = 32;
pfd.cAccumBits = 32;
pfd.iLayerType = PFD_MAIN_PLANE;
SetPixelFormat(hDC, ChoosePixelFormat(hDC, &pfd), &pfd);
HGLRC hGlrc = jimglCreateContext(hDC);
if(hGlrc)
{
jimglMakeCurrent(hDC, hGlrc);
pglBufferData = (GLBUFFERDATAARBPROC) jimglGetProcAddress("glBufferData");
pglDeleteBuffers = (GLDELETEBUFFERSARBPROC) jimglGetProcAddress("glDeleteBuffers");
pglGenBuffers = (GLGENBUFFERSARBPROC) jimglGetProcAddress("glGenBuffers");
pglMapBuffer = (GLMAPBUFFERPROC) jimglGetProcAddress("glMapBuffer");
pglUnmapBuffer = (GLUNMAPBUFFERPROC) jimglGetProcAddress("glUnmapBuffer");
pglBindBuffer = (GLBINDBUFFERPROC) jimglGetProcAddress("glBindBuffer");
UINT lastErr = GetLastError();
if(pglBufferData && pglDeleteBuffers && pglGenBuffers && pglMapBuffer && pglUnmapBuffer && pglBindBuffer)
{
glHookSwapBuffers.Hook((FARPROC)SwapBuffers, (FARPROC)SwapBuffersHook);
glHookSwapLayerBuffers.Hook((FARPROC)jimglSwapLayerBuffers, (FARPROC)wglSwapLayerBuffersHook);
glHookDeleteContext.Hook((FARPROC)jimglDeleteContext, (FARPROC)wglDeleteContextHook);
bSuccess = true;
}
jimglMakeCurrent(NULL, NULL);
jimglDeleteContext(hGlrc);
if(bSuccess)
{
glHookSwapBuffers.Rehook();
glHookSwapLayerBuffers.Rehook();
glHookDeleteContext.Rehook();
}
}
DeleteDC(hDC);
}
}
return bSuccess;
}
static inline void *wgl_get_proc(const char *name)
{
return (void*)jimglGetProcAddress(name);
}
bool InitGLCapture()
{
static HWND hwndOpenGLSetupWindow = NULL;
bool bSuccess = false;
if(!hwndOpenGLSetupWindow)
{
WNDCLASSEX windowClass;
ZeroMemory(&windowClass, sizeof(windowClass));
windowClass.cbSize = sizeof(windowClass);
windowClass.style = CS_OWNDC;
windowClass.lpfnWndProc = DefWindowProc;
windowClass.lpszClassName = TEXT("OBSOGLHookClass");
windowClass.hInstance = hinstMain;
if(RegisterClassEx(&windowClass))
{
hwndOpenGLSetupWindow = CreateWindowEx (0,
TEXT("OBSOGLHookClass"),
TEXT("OBS OpenGL Context Window"),
WS_POPUP | WS_CLIPCHILDREN | WS_CLIPSIBLINGS,
0, 0,
1, 1,
NULL,
NULL,
hinstMain,
NULL
);
}
}
HMODULE hGL = GetModuleHandle(TEXT("opengl32.dll"));
if(hGL && hwndOpenGLSetupWindow)
{
pglReadBuffer = (GLREADBUFFERPROC) GetProcAddress(hGL, "glReadBuffer");
pglReadPixels = (GLREADPIXELSPROC) GetProcAddress(hGL, "glReadPixels");
pglGetError = (GLGETERRORPROC) GetProcAddress(hGL, "glGetError");
pwglSwapLayerBuffers= (WGLSWAPLAYERBUFFERSPROC) GetProcAddress(hGL, "wglSwapLayerBuffers");
pwglSwapBuffers= (WGLSWAPBUFFERSPROC) GetProcAddress(hGL, "wglSwapBuffers");
pwglDeleteContext = (WGLDELETECONTEXTPROC) GetProcAddress(hGL, "wglDeleteContext");
pwglGetProcAddress = (WGLGETPROCADDRESSPROC) GetProcAddress(hGL, "wglGetProcAddress");
pwglMakeCurrent = (WGLMAKECURRENTPROC) GetProcAddress(hGL, "wglMakeCurrent");
pwglCreateContext = (WGLCREATECONTEXTPROC) GetProcAddress(hGL, "wglCreateContext");
if( !pglReadBuffer || !pglReadPixels || !pglGetError || !pwglSwapLayerBuffers || !pwglSwapBuffers ||
!pwglDeleteContext || !pwglGetProcAddress || !pwglMakeCurrent || !pwglCreateContext)
{
return false;
}
HDC hDC = GetDC(hwndOpenGLSetupWindow);
if(hDC)
{
PIXELFORMATDESCRIPTOR pfd;
ZeroMemory(&pfd, sizeof(pfd));
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER | PFD_GENERIC_ACCELERATED;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 32;
pfd.cDepthBits = 32;
pfd.cAccumBits = 32;
pfd.iLayerType = PFD_MAIN_PLANE;
SetPixelFormat(hDC, ChoosePixelFormat(hDC, &pfd), &pfd);
HGLRC hGlrc = jimglCreateContext(hDC);
if(hGlrc)
{
jimglMakeCurrent(hDC, hGlrc);
pglBufferData = (GLBUFFERDATAARBPROC) jimglGetProcAddress("glBufferData");
pglDeleteBuffers = (GLDELETEBUFFERSARBPROC) jimglGetProcAddress("glDeleteBuffers");
pglGenBuffers = (GLGENBUFFERSARBPROC) jimglGetProcAddress("glGenBuffers");
pglMapBuffer = (GLMAPBUFFERPROC) jimglGetProcAddress("glMapBuffer");
pglUnmapBuffer = (GLUNMAPBUFFERPROC) jimglGetProcAddress("glUnmapBuffer");
pglBindBuffer = (GLBINDBUFFERPROC) jimglGetProcAddress("glBindBuffer");
UINT lastErr = GetLastError();
if(pglBufferData && pglDeleteBuffers && pglGenBuffers && pglMapBuffer && pglUnmapBuffer && pglBindBuffer)
{
glHookSwapBuffers.Hook((FARPROC)SwapBuffers, (FARPROC)SwapBuffersHook);
glHookSwapLayerBuffers.Hook((FARPROC)jimglSwapLayerBuffers, (FARPROC)wglSwapLayerBuffersHook);
glHookwglSwapBuffers.Hook((FARPROC)jimglSwapBuffers, (FARPROC)wglSwapBuffersHook);
glHookDeleteContext.Hook((FARPROC)jimglDeleteContext, (FARPROC)wglDeleteContextHook);
bSuccess = true;
}
jimglMakeCurrent(NULL, NULL);
jimglDeleteContext(hGlrc);
ReleaseDC(hwndOpenGLSetupWindow, hDC);
if(bSuccess)
{
glHookSwapBuffers.Rehook();
glHookSwapLayerBuffers.Rehook();
glHookwglSwapBuffers.Rehook();
glHookDeleteContext.Rehook();
DestroyWindow(hwndOpenGLSetupWindow);
hwndOpenGLSetupWindow = NULL;
UnregisterClass(TEXT("OBSOGLHookClass"), hinstMain);
}
}
if(hwndOpenGLSetupWindow)
ReleaseDC(hwndOpenGLSetupWindow, hDC);
}
}
return bSuccess;
}