view docs/html/sdlupdaterects.html @ 3908:6e41f5d80198 SDL-1.2

Actually, this is dumb, just simplify this for now. (But what if this finds the wrong symbol? We really should make this a ./configure test and only do one dlsym or the other depending on the platform...) Reference Bugzilla #354. --ryan.
author Ryan C. Gordon <icculus@icculus.org>
date Sat, 03 Feb 2007 08:17:12 +0000
parents 355632dca928
children
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>SDL_UpdateRects</H1
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><H2
>Name</H2
>SDL_UpdateRects&nbsp;--&nbsp;Makes sure the given list of rectangles is updated on the given screen.</DIV
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>Synopsis</H2
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><PRE
CLASS="FUNCSYNOPSISINFO"
>#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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><H2
>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
<A
HREF="sdllocksurface.html"
>locked</A
>.</P
><DIV
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CLASS="NOTE"
><P
><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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><H2
>See Also</H2
><P
><A
HREF="sdlupdaterect.html"
><TT
CLASS="FUNCTION"
>SDL_UpdateRect</TT
></A
>,
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HREF="sdlrect.html"
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>SDL_Rect</SPAN
></A
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HREF="sdlsurface.html"
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>SDL_LockSurface</TT
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