require('Imager')

var img = %O<Imager>.new(xsize => 256, ysize => 256)

for y=(^256), x=(^256) {
    var rgb = [(255 - x - y).abs, (255-x)^y, x^(255-y)]
    img.setpixel(x => x, y => y, color => rgb)
}

img.write(file => 'xor.png')