銀色瓦版

public class GameMain : Microsoft.Xna.Framework.Game
{
    private GraphicsDeviceManager graphics;
    private VertexDeclaration dec;
    private BasicEffect effect;

    private Graphics2D graph;

    public GameMain()
    {
        graphics = new GraphicsDeviceManager(this);
        Content.RootDirectory = "Content";
    }

    protected override void Initialize()
    {
        // TODO: Add your initialization logic here

        graph = new Graphics2D(Content, "test");
        effect = new BasicEffect(GraphicsDevice, null);
        effect.TextureEnabled = true;

        dec = new VertexDeclaration(GraphicsDevice, VertexPositionTexture.VertexElements);

        base.Initialize();
    }
    protected override void Update(GameTime gameTime)
    {
        // Allows the game to exit
        if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
            this.Exit();

        // TODO: Add your update logic here

        base.Update(gameTime);
    }

    protected override void Draw(GameTime gameTime)
    {
        GraphicsDevice.VertexDeclaration = dec;

        GraphicsDevice.Clear(Color.CornflowerBlue);

        effect.Begin();
        foreach (EffectPass pass in effect.CurrentTechnique.Passes)
        {
            pass.Begin();
            texture.Draw(GraphicDevice, effect);
            pass.End();
        }
        effect.End();

        base.Draw(gameTime);
    }

    static void Main(string[] args)
    {
        using (Game game = new GameMain()) game.Run();
    }
}

public class Graphics2D
{
    private Texture2D texture;
    private VertexPosition[] texture;

    public Graphics2D(ContentManager content, string name)
    {
        texture = content.Load(name);

        vertex = new VertexPositionTexture[] {
            new VertexPositionTexture(new Vector3(-0.5F,  0.5F, 0), new Vector2(0, 0)),
            new VertexPositionTexture(new Vector3( 0.5F,  0.5F, 0), new Vector2(1, 0)),
            new VertexPositionTexture(new Vector3( 0.5F, -0.5F, 0), new Vector2(1, 1)),
            new VertexPositionTexture(new Vector3(-0.5F,  0.5F, 0), new Vector2(0, 0)),
            new VertexPositionTexture(new Vector3( 0.5F,  0.5F, 0), new Vector2(1, 0))
            new VertexPositionTexture(new Vector3(-0.5F, -0.5F, 0), new Vector2(0, 1))
        };
    }

    public void Draw(GraphicsDevice graphics, BasicEffect effect)
    {
        effect.Texture = texture;
        graphics.DrawUserPrimitives(PrimitiveType.TriangleList, vertex, 0, 2);
    }
} 

public class GameMain : Microsoft.Xna.Framework.Game
{
    private GraphicsDeviceManager graphics;
    private VertexDeclaration dec;
    private BasicEffect effect;

    private VertexBuffer squareVertex;
    private IndexBuffer indexBuffer;
    private short[] indices;
    private Graphics2D graph;

    public GameMain()
    {
        graphics = new GraphicsDeviceManager(this);
        Content.RootDirectory = "Content";
    }

    protected override void Initialize()
    {
        // TODO: Add your initialization logic here

        var vertex = new VertexPositionTexture[] {
            new VertexPositionTexture(new Vector3(-0.5F,  0.5F, 0), new Vector2(0, 0)),
            new VertexPositionTexture(new Vector3( 0.5F,  0.5F, 0), new Vector2(1, 0)),
            new VertexPositionTexture(new Vector3( 0.5F, -0.5F, 0), new Vector2(1, 1)),
            new VertexPositionTexture(new Vector3(-0.5F, -0.5F, 0), new Vector2(0, 1))
        };
        indices = new short[] {0, 1, 2, 0, 2, 3};
        squareVertex = new VertexBuffer(GraphicsDevice, VertexPositionTexture.SizeInBytes * vertex.Length, BufferUsage.None);
        squareVertex.SetData(vertex);
        indexBuffer = new IndexBuffer(GraphicsDevice, sizeof(short) * indices.Length, BufferUsage.None, IndexElementSize.SixteenBits);
        indexBuffer.SetData(indices);

        graph = new Graphics2D(Content, "test");
        effect = new BasicEffect(GraphicsDevice, null);
        effect.TextureEnabled = true;

        dec = new VertexDeclaration(GraphicsDevice, VertexPositionTexture.VertexElements);

        base.Initialize();
    }

    protected override void Update(GameTime gameTime)
    {
        // Allows the game to exit
        if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
            this.Exit();

        // TODO: Add your update logic here

        base.Update(gameTime);
    }

    protected override void Draw(GameTime gameTime)
    {
        GraphicsDevice.VertexDeclaration = dec;
        GraphicsDevice.Vertices[0].SetSource(squareVertex, 0, VertexPositionTexture.SizeInBytes);
        GraphicsDevice.Indices = indexBuffer;

        GraphicsDevice.Clear(Color.CornflowerBlue);

        effect.Begin();
        foreach (EffectPass pass in effect.CurrentTechnique.Passes)
        {
            pass.Begin();
            effect.Texture = graph.Texture;
            effect.CommitChanges();
            GraphicsDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0, 4, 0, 2);
            pass.End();
        }
        effect.End();

        base.Draw(gameTime);
    }

    static void Main(string[] args)
    {
        using (Game game = new GameMain()) game.Run();
    }
}

public class Graphics2D
{
    private Texture2D texture;

    public Graphics2D(ContentManager content, string name)
    {
        texture = content.Load(name);
    }

    public Texture2D Texture
    {
        get { return texture; }
    }
}