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Adam Strzelecki to SDL Since current DirectFB implementation is incomplete for YUV surfaces (actually causes segmentation faults when trying Lock and use YUV planar textures) I decided to fix it a bit. Here's a patch that should make DirectFB properly support YUV both packed and planar (3 planes). (1) Removed SDL_BYTESPERPIXEL at all in favor of DFB_BYTES_PER_PIXEL(SDLToDFBPixelFormat(fmt)) which does return always proper BPP for YUVs too, coz SDL_BYTESPERPIXEL returns incorrect values for FOURCCs (2) Fixed data->pixels allocation for planar YUVs in CreateTexture, it should allocate 150% more space (3) Copy other planes for planar YUVs in UpdateTexture (4) Moved checking if format is supported at all with DirectFB on CreateTexture at the beginning of the code Waiting for comments, -- Adam Strzelecki | nanoant.com
author Sam Lantinga <slouken@libsdl.org>
date Sun, 04 Oct 2009 04:03:37 +0000
parents 355632dca928
children
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<HTML
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><TITLE
>SDL_GL_LoadLibrary</TITLE
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><H1
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>SDL_GL_LoadLibrary</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN2648"
></A
><H2
>Name</H2
>SDL_GL_LoadLibrary&nbsp;--&nbsp;Specify an OpenGL library</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN2651"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN2652"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_GL_LoadLibrary</B
></CODE
>(const char *path);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
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><A
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></A
><H2
>Description</H2
><P
>If you wish, you may load the OpenGL library at runtime, this must be done before <A
HREF="sdlsetvideomode.html"
><TT
CLASS="FUNCTION"
>SDL_SetVideoMode</TT
></A
> is called. The <TT
CLASS="PARAMETER"
><I
>path</I
></TT
> of the GL library is passed to <TT
CLASS="FUNCTION"
>SDL_GL_LoadLibrary</TT
> and it returns <SPAN
CLASS="RETURNVALUE"
>0</SPAN
> on success, or <SPAN
CLASS="RETURNVALUE"
>-1</SPAN
> on an error. You must then use <A
HREF="sdlglgetprocaddress.html"
><TT
CLASS="FUNCTION"
>SDL_GL_GetProcAddress</TT
></A
> to retrieve function pointers to GL functions.</P
></DIV
><DIV
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><A
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></A
><H2
>See Also</H2
><P
><A
HREF="sdlglgetprocaddress.html"
><TT
CLASS="FUNCTION"
>SDL_GL_GetProcAddress</TT
></A
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