multi_layer_graphic_export.js

let g1, g2;

function setup() {
  createCanvas(400, 400);
  g1 = createGraphics(width, height);
  g2 = createGraphics(width, height);
  g3 = createGraphics(width, height);
}

function draw() {
  background(220);
  
  
  g1.noStroke();
  g1.fill(255,0,0);
  g1.circle(width/2,height/2,100);
  
  g2.noFill();
  g2.stroke(0,0,255);
  g2.strokeWeight(20);
  g2.circle(width/2,height/2,200);
  
  image(g1,0,0);
  image(g2,0,0);
  
  g1.filter(THRESHOLD);
  g1.save();
  
  g2.filter(THRESHOLD);
  g2.save();

  noLoop();
}