+ fprintf(stderr, "forcing 640x480...\n");
+ kContextWidth = 640;
+ kContextHeight = 480;
+ if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL)
+ {
+ fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError());
+ fprintf(stderr, "forcing 640x480 windowed mode...\n");
+ sdlflags &= ~SDL_FULLSCREEN;
+ if (SDL_SetVideoMode(kContextWidth, kContextHeight, 0, sdlflags) == NULL)
+ {
+ fprintf(stderr, "SDL_SetVideoMode() failed: %s\n", SDL_GetError());
+ return false;
+ }
+ }
+ }
+
+ int dblbuf = 0;
+ if ((SDL_GL_GetAttribute(SDL_GL_DOUBLEBUFFER, &dblbuf) == -1) || (!dblbuf))
+ {
+ fprintf(stderr, "Failed to get double buffered GL context!\n");
+ SDL_Quit();