function setup() {

  pixelDensity(1.0);

  createCanvas(windowWidth,windowHeight);

  background(0);

}

​

function mousePressed() {

  if (mouseX > 0 && mouseX < windowWidth && mouseY > 0 && mouseY < windowHeight) {

    let fs = fullscreen();

    fullscreen(!fs);

  }

}

​

function draw() {

  noSmooth();

  set(100,100,color(255));

  updatePixels();

}

​

function windowResized() {

  resizeCanvas(windowWidth,windowHeight);

}