GL_MESA_ycbcr_texture
https://www.khronos.org/registry/OpenGL/extensions/MESA/MESA_ycbcr_texture.txt
GL_MESA_ycbcr_texture

	GL_UNSIGNED_SHORT_8_8_MESA 0x85BA
	GL_UNSIGNED_SHORT_8_8_REV_MESA 0x85BB
	GL_YCBCR_MESA 0x8757