GLX_EXT_stereo_tree
https://www.khronos.org/registry/egl/specs/eglspec.1.5.pdf
GLX_EXT_stereo_tree

	GLX_STEREO_NOTIFY_EXT 0x00000000
	GLX_STEREO_NOTIFY_MASK_EXT 0x00000001
	GLX_STEREO_TREE_EXT 0x20F5