GLX_EXT_stereo_tree
http://www.opengl.org/registry/specs/EXT/glx_stereo_tree.txt
GLX_EXT_stereo_tree
	GLX_STEREO_NOTIFY_EXT 0x00000000
	GLX_STEREO_NOTIFY_MASK_EXT 0x00000001
	GLX_STEREO_TREE_EXT 0x20F5
