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 3.0.0.