[Xquartz-changes] [263] AppleSGLX/trunk/gen_exports.tcl

[source_changes at macosforge.org]

Revision: 263
          http://trac.macosforge.org/projects/xquartz/changeset/263
Author:   gstaplin at apple.com
Date:     2009-02-26 07:04:50 -0800 (Thu, 26 Feb 2009)
Log Message:
-----------
Update gen_exports.tcl to include some SGIX stubs.

This should allow building more Mesa apps (more easily at least), but
the extension won't be listed by glXQueryExtensionsString.

See also: the long comment in gen_exports.tcl.

Modified Paths:
--------------
    AppleSGLX/trunk/gen_exports.tcl

Modified: AppleSGLX/trunk/gen_exports.tcl
===================================================================
--- AppleSGLX/trunk/gen_exports.tcl	2009-02-26 07:49:45 UTC (rev 262)
+++ AppleSGLX/trunk/gen_exports.tcl	2009-02-26 15:04:50 UTC (rev 263)
@@ -89,6 +89,30 @@
 	glXDestroyGLXPbufferSGIX glXSelectEventSGIX \
 	glXGetSelectedEventSGIX 
     
+    #These are for GLX_SGIX_fbconfig, which isn't implemented, because
+    #we have the GLX 1.3 GLXFBConfig functions which are in the standard spec.
+    #It should be possible to support these to some extent.
+    #The old libGL somewhat supported the GLXFBConfigSGIX code, but lacked
+    #pbuffer, and pixmap support.
+    #We mainly just need these stubs for linking with apps, because for 
+    #some reason the OpenGL site suggests using the latest glxext.h, 
+    #and glxext.h defines all GLX extensions, which doesn't seem right for
+    #compile-time capability detection.
+    #See also: http://www.mesa3d.org/brianp/sig97/exten.htm#Compile
+    #which conflicts with: the ABI registry from what I saw on opengl.org. 
+    #By disabling some of the #defines in glxext.h we break some software,
+    #and by enabling them without the symbols we break others (in Mesa).
+    #I think a lot of OpenGL-based programs have issues one way or another.
+    #It seems that even Mesa developers are confused on this issue, because
+    #Mesa-7.3/progs/xdemos/glxgears_fbconfig.c has comments about breakage 
+    #in some comments.
+    lappend glxlist glXGetFBConfigAttribSGIX \
+	glXChooseFBConfigSGIX \
+	glXGetVisualFromFBConfigSGIX \
+	glXCreateGLXPixmapWithConfigSGIX \
+	glXCreateContextWithConfigSGIX \
+	glXGetFBConfigFromVisualSGIX
+    
 
     set fd [open [lindex $argv 1] w]
     
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