o.");
      } else {
        // No VR means no mirroring, so create WebGL content without
        // preserveDrawingBuffer
        initWebGL(false);
        VRSamplesUtil.addError("Your browser does not support WebVR. See <a href='http://webvr.info'>webvr.info</a> for assistance.");
      }

      function onResize () {
        if (vrDisplay && vrDisplay.isPresenting) {
          // If we're presenting we want to use the drawing buffer size
          // recommended by the VRDevice, since that will ensure th