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

	GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT 0x00000008
	GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT 0x20B1
