func StencilOpSeparate(face uint32, sfail uint32, dpfail uint32, dppass uint32) {
	C.glowStencilOpSeparate(gpStencilOpSeparate, (C.GLenum)(face), (C.GLenum)(sfail), (C.GLenum)(dpfail), (C.GLenum)(dppass))
}
func StencilOpSeparate(face uint32, sfail uint32, dpfail uint32, dppass uint32) {
	C.glowStencilOpSeparate(gpStencilOpSeparate, (C.GLenum)(face), (C.GLenum)(sfail), (C.GLenum)(dpfail), (C.GLenum)(dppass))
}
// set front and/or back stencil test actions