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Date: Tue, 9 May 2006 23:01:49 -0400 From: Mike Frysinger Subject: [SDL] [patch] fall back to using MAP_PRIVATE with mmap() in fbcon dri trying to use MAP_SHARED with mmap() on uClinux (aka non-mmu) hosts nowadays will simply fail since the kernel disallows it ... falling back to using MAP_PRIVATE on these hosts is acceptable ... as such, ive attached a patch for the fbcon driver that will fall back to using MAP_PRIVATE if mmap() with MAP_SHARED failed going by a grep of MAP_SHARED, the only other drivers that utilize this flag are video/wscons, video/ps2gs, and sound/dmaaudio ... i dont think these would appear on a non-mmu host so the patch i wrote is restricted to just SDL_fbvideo.c ... -mike
author Sam Lantinga <slouken@libsdl.org>
date Wed, 10 May 2006 04:05:46 +0000
parents 355632dca928
children
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<HTML
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><TITLE
>SDL_ConvertSurface</TITLE
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><H1
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>SDL_ConvertSurface</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN2258"
></A
><H2
>Name</H2
>SDL_ConvertSurface&nbsp;--&nbsp;Converts a surface to the same format as another surface.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN2261"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN2262"
></A
><P
></P
><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
></P
><P
></P
></DIV
></DIV
><DIV
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><A
NAME="AEN2268"
></A
><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
HREF="sdldisplayformat.html"
><TT
CLASS="FUNCTION"
>SDL_DisplayFormat</TT
></A
>.</P
><P
>This function can only be called after SDL_Init.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2280"
></A
><H2
>Return Value</H2
><P
>Returns either a pointer to the new surface, or
<TT
CLASS="LITERAL"
>NULL</TT
> on error.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
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></A
><H2
>See Also</H2
><P
><A
HREF="sdlcreatergbsurface.html"
><TT
CLASS="FUNCTION"
>SDL_CreateRGBSurface</TT
></A
>,
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HREF="sdldisplayformat.html"
><TT
CLASS="FUNCTION"
>SDL_DisplayFormat</TT
></A
>,
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><SPAN
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>SDL_PixelFormat</SPAN
></A
>,
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><SPAN
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>SDL_Surface</SPAN
></A
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