SDL_UpdateRects(3) SDL API Reference SDL_UpdateRects(3)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 over-
head. 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 over-
draw.
SEE ALSO
SDL_UpdateRect, SDL_Rect, SDL_Surface, SDL_LockSurface
SDL Tue 11 Sep 2001, 23:01 SDL_UpdateRects(3)
