init

public SamuraiGunnGame()
{
    _graphicsDeviceManager = new GraphicsDeviceManager(this);

    Content.RootDirectory = "Content";
    IsFixedTimeStep = Config.FORCE_FIXED_TIMESTEP;

    _virtualDimensions = new Microsoft.Xna.Framework.Rectangle(0, 0, s_virtual_width, s_virtual_height);

    _graphicsDeviceManager.SynchronizeWithVerticalRetrace = Config.FORCE_VSYNC;
    _graphicsDeviceManager.IsFullScreen = Config.FORCE_FULLSCREEN;

    int backBufferWidth = 0;
    int backBufferHeight = 0;

    if (Config.FORCE_FULLSCREEN)
    {
        foreach (var dm in GraphicsDevice.Adapter.SupportedDisplayModes)
        {
            if (dm.Width > backBufferWidth || dm.Height > backBufferHeight)
            {
                backBufferWidth = dm.Width;
                backBufferHeight = dm.Height;
            }
        }
    }
    else
    {
        backBufferWidth = s_virtual_width;
        backBufferHeight = s_virtual_height;
    }

    _graphicsDeviceManager.PreferredBackBufferWidth = backBufferWidth;
    _graphicsDeviceManager.PreferredBackBufferHeight = backBufferHeight;

#if DEBUG
    IsMouseVisible = true;
#endif
}

/// <summary>
/// Allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content.  Calling base.Initialize will enumerate through any components
/// and initialize them as well.
/// </summary>
protected override void Initialize()
{
    base.Initialize();

    _gameRenderTarget = new RenderTarget2D(GraphicsDevice, s_render_width, s_render_height);
    _levelBrowserRenderTarget = new RenderTarget2D(GraphicsDevice, s_virtual_width, s_virtual_height);
    _uiRenderTarget = new RenderTarget2D(GraphicsDevice, 1920, 1080);
    _postProcessRenderTarget = new RenderTarget2D(GraphicsDevice, s_virtual_width, s_virtual_height);
    _debugUIRenderTarget = new RenderTarget2D(GraphicsDevice, s_virtual_width, s_virtual_height);
    _finalRenderTarget = new RenderTarget2D(GraphicsDevice, s_virtual_width, s_virtual_height);

    Resolution.Init(
        GraphicsDevice,
        GraphicsDevice.PresentationParameters.BackBufferWidth,
        GraphicsDevice.PresentationParameters.BackBufferHeight,
         s_virtual_width,
         s_virtual_height
    );
    Window.ClientSizeChanged += OnClientSizeChanged;
}