function setup() {

  createCanvas(640, 360);

  background(220);

  pixelDensity(1);

​

}

​

function draw() {

  let xoff = 0;

  let yoff = 0;

  loadPixels();

  for (let y = 0; y < height; y++){

    let xoff = 0;

    for (let x = 0; x < height; y++){

      let index = (x + y * width ) * 4

       let r = noise (xoff, yoff) * 255 ;

      //let r = random (255) 

      pixels[index + 0] = r;

      pixels[index + 1] = r;

      pixels[index + 2] = r;

      pixels[index + 3] = 255;

      xoff += inc;

    }

      yoff += inc;

  }

  updatePixels();

}