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function setup() {
createCanvas(400, 400);
pixelDensity(1);
}
function draw() {
background(51);
loadPixels();
for (var y = 0; y < height; y++) {
for (var x = 0; x < width; x++) {
var index = (x + y * width)*4;
pixels[index+0] = x;
pixels[index+1] = random(255);
pixels[index+2] = y;
pixels[index+3] = 255;
}
}
updatePixels();
}