NAME

       SDL_UpdateRects - Makes sure the given list of rectangles is updated on the given screen.

SYNOPSIS

       #include "SDL.h"

       void SDL_UpdateRects(SDL_Surface *screen, int numrects, SDL_Rect *rects);

DESCRIPTION

       Makes  sure  the  given  list  of  rectangles  is updated on the given screen. The rectangles must all be
       confined within the screen boundaries (no clipping is done).

       This function should not be called while screen is locked.

              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.

SEE ALSO

       SDL_UpdateRect, SDL_Rect, SDL_Surface, SDL_LockSurface