func PolygonStipple(mask *uint8) {
	C.glowPolygonStipple(gpPolygonStipple, (*C.GLubyte)(unsafe.Pointer(mask)))
}
func PolygonStipple(mask *uint8) {
	C.glowPolygonStipple(gpPolygonStipple, (*C.GLubyte)(unsafe.Pointer(mask)))
}
// set the polygon stippling pattern