func UpdateDisplayRegion(x, y, width, height int32) { C.al_update_display_region(C.int(x), C.int(y), C.int(width), C.int(height)) }
func FlipRegion(x, y, w, h int) { C.al_update_display_region(C.int(x), C.int(y), C.int(w), C.int(h)) }