SDL_AllocFormat  240 src/video/SDL_pixels.c   surface->format = SDL_AllocFormat(bpp, Rmask, Gmask, Bmask, Amask);
SDL_AllocFormat   93 src/video/SDL_surface.c  surface->format = SDL_AllocFormat(depth, Rmask, Gmask, Bmask, Amask);
SDL_AllocFormat  876 src/video/SDL_video.c    format = SDL_AllocFormat(32, rmask, gmask, bmask, amask);