GL_NV_texture_shader3
http://oss.sgi.com/projects/ogl-sample/registry/NV/texture_shader3.txt
	GL_OFFSET_PROJECTIVE_TEXTURE_2D_NV 0x8850
	GL_OFFSET_PROJECTIVE_TEXTURE_2D_SCALE_NV 0x8851
	GL_OFFSET_PROJECTIVE_TEXTURE_RECTANGLE_NV 0x8852
	GL_OFFSET_PROJECTIVE_TEXTURE_RECTANGLE_SCALE_NV 0x8853
	GL_OFFSET_HILO_TEXTURE_2D_NV 0x8854
	GL_OFFSET_HILO_TEXTURE_RECTANGLE_NV 0x8855
	GL_OFFSET_HILO_PROJECTIVE_TEXTURE_2D_NV 0x8856
	GL_OFFSET_HILO_PROJECTIVE_TEXTURE_RECTANGLE_NV 0x8857
	GL_DEPENDENT_HILO_TEXTURE_2D_NV 0x8858
	GL_DEPENDENT_RGB_TEXTURE_3D_NV 0x8859
	GL_DEPENDENT_RGB_TEXTURE_CUBE_MAP_NV 0x885A
	GL_DOT_PRODUCT_PASS_THROUGH_NV 0x885B
	GL_DOT_PRODUCT_TEXTURE_1D_NV 0x885C
	GL_DOT_PRODUCT_AFFINE_DEPTH_REPLACE_NV 0x885D
	GL_HILO8_NV 0x885E
	GL_SIGNED_HILO8_NV 0x885F
	GL_FORCE_BLUE_TO_ONE_NV 0x8860