private void initDisplay(){
        // acquire important objects
        // from the context
        settings = context.getSettings();

        // Only reset the timer if a user has not already provided one
        if (timer == null) {
            timer = context.getTimer();
        }

        renderer = context.getRenderer();
    }
Runs tasks enqueued via {@link #enqueue(Callable)}
jme3-vr/src/main/java/com/jme3/app/VRApplication.java