func (b *Bitmap) Draw(dx, dy float32, flags int) { C.al_draw_bitmap((*C.ALLEGRO_BITMAP)(b), C.float(dx), C.float(dy), C.int(flags)) }
func (b *Bitmap) Draw(dx, dy float32, flags int32) { C.al_draw_bitmap((*C.ALLEGRO_BITMAP)(unsafe.Pointer(b)), C.float(dx), C.float(dy), C.int(flags)) }