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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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<HTML
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>SDL_GLattr</TITLE
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><H1
><A
NAME="SDLGLATTR"
></A
>SDL_GLattr</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN2971"
></A
><H2
>Name</H2
>SDL_GLattr&nbsp;--&nbsp;SDL GL Attributes</DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2974"
></A
><H2
>Attributes</H2
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN2976"
></A
><P
></P
><TABLE
BORDER="0"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_GL_RED_SIZE</TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Size of the framebuffer red component, in bits</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_GL_GREEN_SIZE</TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Size of the framebuffer green component, in bits</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_GL_BLUE_SIZE</TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Size of the framebuffer blue component, in bits</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_GL_ALPHA_SIZE</TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Size of the framebuffer alpha component, in bits</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_GL_DOUBLEBUFFER</TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>0 or 1, enable or disable double buffering</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_GL_BUFFER_SIZE</TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Size of the framebuffer, in bits</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_GL_DEPTH_SIZE</TT
></TD
><TD
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VALIGN="TOP"
>Size of the depth buffer, in bits</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_GL_STENCIL_SIZE</TT
></TD
><TD
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VALIGN="TOP"
>Size of the stencil buffer, in bits</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_GL_ACCUM_RED_SIZE</TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Size of the accumulation buffer red component, in bits</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_GL_ACCUM_GREEN_SIZE</TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Size of the accumulation buffer green component, in bits</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_GL_ACCUM_BLUE_SIZE</TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Size of the accumulation buffer blue component, in bits</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_GL_ACCUM_ALPHA_SIZE</TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Size of the accumulation buffer alpha component, in bits</TD
></TR
></TBODY
></TABLE
><P
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></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
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><H2
>Description</H2
><P
>While you can set most OpenGL attributes normally, the attributes list above must be known <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>before</I
></SPAN
> SDL sets the video mode. These attributes a set and read with <A
HREF="sdlglsetattribute.html"
><TT
CLASS="FUNCTION"
>SDL_GL_SetAttribute</TT
></A
> and <A
HREF="sdlglgetattribute.html"
><TT
CLASS="FUNCTION"
>SDL_GL_GetAttribute</TT
></A
>.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3035"
></A
><H2
>See Also</H2
><P
><A
HREF="sdlglsetattribute.html"
><TT
CLASS="FUNCTION"
>SDL_GL_SetAttribute</TT
></A
>,
<A
HREF="sdlglgetattribute.html"
><TT
CLASS="FUNCTION"
>SDL_GL_GetAttribute</TT
></A
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