GL_SGIX_nonlinear_lighting_pervertex
https://www.khronos.org/registry/OpenGL/extensions/SGIX/SGIX_nonlinear_lighting_pervertex.txt
GL_SGIX_nonlinear_lighting_pervertex

	void glGetNonlinLightfvSGIX (GLenum light, GLenum pname, GLint* terms, GLfloat *data)
	void glGetNonlinMaterialfvSGIX (GLenum face, GLenum pname, GLint* terms, const GLfloat *data)
	void glNonlinLightfvSGIX (GLenum light, GLenum pname, GLint terms, GLfloat* params)
	void glNonlinMaterialfvSGIX (GLenum face, GLenum pname, GLint terms, const GLfloat* params)