|SDL_UpdateRects(3)||SDL API Reference||SDL_UpdateRects(3)|
Note:It is adviced to call this function only once per frame, since each call has some processing overhead. This is no restriction since you can pass any number of rectangles each time.The rectangles are not automatically merged or checked for overlap. In general, the programmer can use his knowledge about his particular rectangles to merge them in an efficient way, to avoid overdraw.
|Tue 11 Sep 2001, 23:01||SDL|