Copy areas of the window surface to the screen.
int SDL_UpdateWindowSurfaceRects(SDL_Window * window,
const SDL_Rect * rects,
int numrects);| window | the window to update |
| rects | an array of SDL_Rect structures representing areas of the surface to copy, in pixels |
| numrects | the number of rectangles |
Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.
This is the function you use to reflect changes to portions of the surface on the screen.
This function is equivalent to the SDL 1.2 API SDL_UpdateRects().
This function is available since SDL 2.0.0.