view docs/html/sdlcreatergbsurfacefrom.html @ 2185:2032348afed1

This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is available and to keep people form having to install yet another library I have added the essential parts of Xmu in src/video/extensions/XmuStdCmap and an include file in src/video/extensions. The support makes use of standard X11 mechanisms to create color maps and make sure that an application uses the same color map for each window/visual combination. This should make it possible for gamma support to be implemented based on a single color map per application. Hurm... it looks like "make indent" modified a few extra files. Those are getting committed too.
author Bob Pendleton <bob@pendleton.com>
date Thu, 12 Jul 2007 20:00:50 +0000
parents 355632dca928
children
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>SDL_CreateRGBSurfaceFrom</H1
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><H2
>Name</H2
>SDL_CreateRGBSurfaceFrom&nbsp;--&nbsp;Create an SDL_Surface from pixel data</DIV
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>Synopsis</H2
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><P
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><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>SDL_Surface *<B
CLASS="FSFUNC"
>SDL_CreateRGBSurfaceFrom</B
></CODE
>(void *pixels, int width, int height, int depth, int pitch, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask);</CODE
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>Description</H2
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>Creates an SDL_Surface from the provided pixel data.</P
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>The data stored in <TT
CLASS="PARAMETER"
><I
>pixels</I
></TT
> is assumed to be of the <TT
CLASS="PARAMETER"
><I
>depth</I
></TT
> specified in the parameter list. The pixel data is not copied into the <SPAN
CLASS="STRUCTNAME"
>SDL_Surface</SPAN
> structure so it should not be freed until the surface has been freed with a called to <A
HREF="sdlfreesurface.html"
>SDL_FreeSurface</A
>. <TT
CLASS="PARAMETER"
><I
>pitch</I
></TT
> is the length of each scanline in bytes.  </P
><P
>See <A
HREF="sdlcreatergbsurface.html"
><TT
CLASS="FUNCTION"
>SDL_CreateRGBSurface</TT
></A
> for a more detailed description of the other parameters.</P
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><H2
>Return Value</H2
><P
>Returns the created surface, or <SPAN
CLASS="RETURNVALUE"
>NULL</SPAN
> upon error.</P
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><P
><A
HREF="sdlcreatergbsurface.html"
><TT
CLASS="FUNCTION"
>SDL_CreateRGBSurface</TT
></A
>,
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>SDL_FreeSurface</TT
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