Linux Blog

SDL_UpdateRects

Section: SDL API Reference (3)
Updated: Tue 11 Sep 2001, 23:01
Index Return to Main Contents
 

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


 

Index

NAME
SYNOPSIS
DESCRIPTION
SEE ALSO




Random Man Pages:
st
syscalls
ldap
DSA_SIG_free