func PolygonStipple(mask *uint8) {
	syscall.Syscall(gpPolygonStipple, 1, uintptr(unsafe.Pointer(mask)), 0, 0)
}
func PolygonStipple(mask *uint8) {
	syscall.Syscall(gpPolygonStipple, 1, uintptr(unsafe.Pointer(mask)), 0, 0)
}
func PolygonStipple ( mask * uint8 ) { syscall . Syscall ( gpPolygonStipple , 1 , uintptr ( unsafe . Pointer ( mask ) ) , 0 , 0 ) }
// set the polygon stippling pattern
set the polygon stippling pattern