本文整理汇总了C++中GL_RenderData::glGetIntegerv方法的典型用法代码示例。如果您正苦于以下问题：C++ GL_RenderData::glGetIntegerv方法的具体用法？C++ GL_RenderData::glGetIntegerv怎么用？C++ GL_RenderData::glGetIntegerv使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类GL_RenderData的用法示例。
在下文中一共展示了GL_RenderData::glGetIntegerv方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: sizeof
SDL_Renderer *
GL_CreateRenderer(SDL_Window * window, Uint32 flags)
{
SDL_Renderer *renderer;
GL_RenderData *data;
const char *hint;
GLint value;
Uint32 window_flags;
window_flags = SDL_GetWindowFlags(window);
if (!(window_flags & SDL_WINDOW_OPENGL)) {
if (SDL_RecreateWindow(window, window_flags | SDL_WINDOW_OPENGL) < 0) {
return NULL;
}
}
renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
if (!renderer) {
SDL_OutOfMemory();
return NULL;
}
data = (GL_RenderData *) SDL_calloc(1, sizeof(*data));
if (!data) {
GL_DestroyRenderer(renderer);
SDL_OutOfMemory();
return NULL;
}
renderer->WindowEvent = GL_WindowEvent;
renderer->CreateTexture = GL_CreateTexture;
renderer->UpdateTexture = GL_UpdateTexture;
renderer->LockTexture = GL_LockTexture;
renderer->UnlockTexture = GL_UnlockTexture;
renderer->UpdateViewport = GL_UpdateViewport;
renderer->RenderClear = GL_RenderClear;
renderer->RenderDrawPoints = GL_RenderDrawPoints;
renderer->RenderDrawLines = GL_RenderDrawLines;
renderer->RenderFillRects = GL_RenderFillRects;
renderer->RenderCopy = GL_RenderCopy;
renderer->RenderReadPixels = GL_RenderReadPixels;
renderer->RenderPresent = GL_RenderPresent;
renderer->DestroyTexture = GL_DestroyTexture;
renderer->DestroyRenderer = GL_DestroyRenderer;
renderer->info = GL_RenderDriver.info;
renderer->info.flags = SDL_RENDERER_ACCELERATED;
renderer->driverdata = data;
data->context = SDL_GL_CreateContext(window);
if (!data->context) {
GL_DestroyRenderer(renderer);
return NULL;
}
if (SDL_GL_MakeCurrent(window, data->context) < 0) {
GL_DestroyRenderer(renderer);
return NULL;
}
if (GL_LoadFunctions(data) < 0) {
GL_DestroyRenderer(renderer);
return NULL;
}
#ifdef __MACOSX__
/* Enable multi-threaded rendering */
/* Disabled until Ryan finishes his VBO/PBO code...
CGLEnable(CGLGetCurrentContext(), kCGLCEMPEngine);
*/
#endif
if (flags & SDL_RENDERER_PRESENTVSYNC) {
SDL_GL_SetSwapInterval(1);
} else {
SDL_GL_SetSwapInterval(0);
}
if (SDL_GL_GetSwapInterval() > 0) {
renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
}
data->glGetIntegerv(GL_MAX_TEXTURE_SIZE, &value);
renderer->info.max_texture_width = value;
data->glGetIntegerv(GL_MAX_TEXTURE_SIZE, &value);
renderer->info.max_texture_height = value;
if (SDL_GL_ExtensionSupported("GL_ARB_texture_rectangle")
|| SDL_GL_ExtensionSupported("GL_EXT_texture_rectangle")) {
data->GL_ARB_texture_rectangle_supported = SDL_TRUE;
}
if (SDL_GL_ExtensionSupported("GL_APPLE_texture_range")) {
data->glTextureRangeAPPLE =
(void (*)(GLenum, GLsizei, const GLvoid *))
SDL_GL_GetProcAddress("glTextureRangeAPPLE");
}
/* Check for multitexture support */
if (SDL_GL_ExtensionSupported("GL_ARB_multitexture")) {
data->glActiveTextureARB = (PFNGLACTIVETEXTUREARBPROC) SDL_GL_GetProcAddress("glActiveTextureARB");
if (data->glActiveTextureARB) {
data->GL_ARB_multitexture_supported = SDL_TRUE;
data->glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &data->num_texture_units);
//.........这里部分代码省略.........