WGL_3DL_stereo_control
http://oss.sgi.com/projects/ogl-sample/registry/3DL/stereo_control.txt
	WGL_STEREO_EMITTER_ENABLE_3DL 0x2055
	WGL_STEREO_EMITTER_DISABLE_3DL 0x2056
	WGL_STEREO_POLARITY_NORMAL_3DL 0x2057
	WGL_STEREO_POLARITY_INVERT_3DL 0x2058
	BOOL wglSetStereoEmitterState3DL (HDC hDC, UINT uState)