GL_SGIX_igloo_interface
https://www.khronos.org/registry/OpenGL/extensions/SGIX/SGIX_igloo_interface.txt
GL_SGIX_igloo_interface

	GL_IGLOO_FULLSCREEN_SGIX 0x819E
	GL_IGLOO_VIEWPORT_OFFSET_SGIX 0x819F
	GL_IGLOO_SWAPTMESH_SGIX 0x81A0
	GL_IGLOO_COLORNORMAL_SGIX 0x81A1
	GL_IGLOO_IRISGL_MODE_SGIX 0x81A2
	GL_IGLOO_LMC_COLOR_SGIX 0x81A3
	GL_IGLOO_TMESHMODE_SGIX 0x81A4
	GL_LIGHT31 0xBEAD
	void glIglooInterfaceSGIX (GLenum pname, void *param)