private void OnLoaded(object sender, RoutedEventArgs eventArgs)
        {
            if (GraphicsService == null)
            {
                return;
            }

            _textureGraphicsScreen = new TextureGraphicsScreen(GraphicsService);
            GraphicsScreens        = new GraphicsScreen[] { _textureGraphicsScreen };
            UpdateGraphicsScreen();
        }
 private void Update(GraphicsScreen screen, TimeSpan deltaTime)
 {
     // If your graphics screen has any objects that need to be updated before
     // rendering, you can do this here. This method is called once per frame if
     // the graphics screen is visible.
 }