view docs/html/sdlconvertsurface.html @ 2896:1ef2f1e75ff7

Date: Sat, 20 Dec 2008 23:25:19 +0100 From: Couriersud Subject: 32 & 16 bit versions of blendrect and blendline attached are 32, 16 and 15 bit versions of the blendrect and blendline functionality. There was an issue with the bresenham alg. in drawline which I also fixed.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 20 Dec 2008 23:19:20 +0000
parents 355632dca928
children
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>SDL_ConvertSurface</H1
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><H2
>Name</H2
>SDL_ConvertSurface&nbsp;--&nbsp;Converts a surface to the same format as another surface.</DIV
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>Synopsis</H2
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><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL/SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>SDL_Surface *<B
CLASS="FSFUNC"
>SDL_ConvertSurface</B
></CODE
>(SDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags);</CODE
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><H2
>Description</H2
><P
>Creates a new surface of the specified format, and then copies and maps
the given surface to it.  If this function fails, it returns
<TT
CLASS="LITERAL"
>NULL</TT
>.</P
><P
>The <TT
CLASS="PARAMETER"
><I
>flags</I
></TT
> parameter is passed to 
<A
HREF="sdlcreatergbsurface.html"
><TT
CLASS="FUNCTION"
>SDL_CreateRGBSurface</TT
></A
>
and has those semantics.</P
><P
>This function is used internally by 
<A
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><TT
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>SDL_DisplayFormat</TT
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>.</P
><P
>This function can only be called after SDL_Init.</P
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><A
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><H2
>Return Value</H2
><P
>Returns either a pointer to the new surface, or
<TT
CLASS="LITERAL"
>NULL</TT
> on error.</P
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>See Also</H2
><P
><A
HREF="sdlcreatergbsurface.html"
><TT
CLASS="FUNCTION"
>SDL_CreateRGBSurface</TT
></A
>,
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>SDL_DisplayFormat</TT
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>SDL_PixelFormat</SPAN
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