GL_SGIX_polynomial_ffd
https://www.khronos.org/registry/OpenGL/extensions/SGIX/SGIX_polynomial_ffd.txt
GL_SGIX_polynomial_ffd

	GL_TEXTURE_DEFORMATION_BIT_SGIX 0x1
	GL_GEOMETRY_DEFORMATION_BIT_SGIX 0x2
	void glDeformSGIX (GLbitfield mask)
	void glLoadIdentityDeformationMapSGIX (GLbitfield mask)