Oh yeah, we have GLX support too.

--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%403851

include/SDL_config_macosx.h

@@ -136,6 +136,7 @@
 
 /* Enable OpenGL support */
 #define SDL_VIDEO_OPENGL	1
+#define SDL_VIDEO_OPENGL_GLX 1
 
 /* Disable screensaver */
 #define SDL_VIDEO_DISABLE_SCREENSAVER	1