old_contents: /*
   * @constructor
   */
  function ClearPass() {
    this.enabled = true;
    this.scene = new THREE.Scene();
    this.camera = new THREE.OrthographicCamera();
  };
  
  ClearPass.prototype.render = function(renderer, writeBuffer, readBuffer) {
      console.log('clear!');
      renderer.render(this.scene, this.camera, readBuffer, true);
  };
  
new_contents: /*
   * @constructor
   */
  function ClearPass() {
    this.enabled = true;
    this.scene = new THREE.Scene();
    this.camera = new THREE.OrthographicCamera();
  };
  
  ClearPass.prototype.render = function(renderer, writeBuffer, readBuffer) {
      renderer.render(this.scene, this.camera, readBuffer, true);
  };
  
subject: Remove console log