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| ><H2 |
| >Name</H2 |
| >SDL_UpdateRects -- Makes sure the given list of rectangles is updated on the given screen.</DIV |
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| >#include "SDL.h"</PRE |
| ><P |
| ><CODE |
| ><CODE |
| CLASS="FUNCDEF" |
| >void <B |
| CLASS="FSFUNC" |
| >SDL_UpdateRects</B |
| ></CODE |
| >(SDL_Surface *screen, int numrects, SDL_Rect *rects);</CODE |
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| >Description</H2 |
| ><P |
| >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).</P |
| ><P |
| >This function should not be called while <TT |
| CLASS="PARAMETER" |
| ><I |
| >screen</I |
| ></TT |
| > is |
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| ><B |
| >Note: </B |
| >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.</P |
| ><P |
| >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.</P |
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| >See Also</H2 |
| ><P |
| ><A |
| HREF="sdlupdaterect.html" |
| ><TT |
| CLASS="FUNCTION" |
| >SDL_UpdateRect</TT |
| ></A |
| >, |
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| HREF="sdlrect.html" |
| ><SPAN |
| CLASS="STRUCTNAME" |
| >SDL_Rect</SPAN |
| ></A |
| >, |
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| CLASS="STRUCTNAME" |
| >SDL_Surface</SPAN |
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| >, |
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| HREF="sdllocksurface.html" |
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| CLASS="FUNCTION" |
| >SDL_LockSurface</TT |
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