anchor.diff:    gl.depthRange(0.0, 1.0);                 // default
     gl.viewport(0, 0, canvas.width, canvas.height);
     
  +  updateCulling(gl, true);
  +  
  +  detect_element_uint(gl);
  +  
     GameLoopHtml gameLoop = new GameLoopHtml(gl.canvas);
   
     gameLoop.pointerLock.lockOnClick = false; // disable pointer lock
  
positive.code:   gameLoop.start();
  }
  
  void fetchObj(String objURL) {
    
    void handleObjResponse(String objString) {
  
negative.code:     Obj obj = new Obj.fromString(objURL, objString,
          defaultName: "noname",
          fillMissingTextCoord: true,
          printStats: true);
      
      String mtlURL = obj.mtllib;
  
  