SDL_UpdateRects - Online Linux Manual PageSection : 3
Updated : Tue 11 Sep 2001, 23:01
Source : SDL
Note : SDL API Reference

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NAMESDL_UpdateRects − Makes sure the given list of rectangles is updated on the given screen​.

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SYNOPSIS#include "SDL​.h" void SDL_UpdateRects(SDL_Surface *screen, int numrects, SDL_Rect *rects);

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DESCRIPTIONMakes 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​.

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SEE ALSOSDL_UpdateRect, SDL_Rect, SDL_Surface, SDL_LockSurface 0

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