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

	GLX_VISUAL_CAVEAT_EXT 0x20
	GLX_SLOW_VISUAL_EXT 0x8001
	GLX_NON_CONFORMANT_VISUAL_EXT 0x800D