如何在SharpDX中设置用于2D渲染的SwapChain1？

using SharpDX;
using SharpDX.Direct3D11;
using SharpDX.DXGI;
using System;

public class SwapChainExample
{
    private Device device;
    private SwapChain swapChain;
    private Texture2D backBuffer;
    private RenderTargetView renderTargetView;

    public void Initialize(IntPtr windowHandle)
    {
        // 创建设备和交换链
        var desc = new SwapChainDescription
        {
            BufferCount = 1,
            ModeDescription = new ModeDescription(800, 600, new Rational(60, 1), Format.R8G8B8A8_UNorm),
            IsWindowed = true,
            OutputHandle = windowHandle,
            SampleDescription = new SampleDescription(1, 0),
            SwapEffect = SwapEffect.Discard,
            Usage = Usage.RenderTargetOutput
        };

        Device.CreateWithSwapChain(DriverType.Hardware, DeviceCreationFlags.None, desc, out device, out swapChain);
    }

    public void CreateRenderTargetView()
    {
        // 获取后台缓冲区
        backBuffer = Texture2D.FromSwapChain<Texture2D>(swapChain, 0);

        // 创建渲染目标视图
        renderTargetView = new RenderTargetView(device, backBuffer);
    }

    public void Present()
    {
        // 呈现交换链
        swapChain.Present(1, PresentFlags.None);
    }

    public void Resize(int width, int height)
    {
        // 释放旧的渲染目标视图
        renderTargetView.Dispose();

        // 重新创建后台缓冲区和渲染目标视图
        backBuffer = Texture2D.FromSwapChain<Texture2D>(swapChain, 0);
        renderTargetView = new RenderTargetView(device, backBuffer);

        // 设置视口
        var viewport = new Viewport(0, 0, width, height, 0, 1);
        device.ImmediateContext.Rasterizer.SetViewport(viewport);
    }
}

public static void Main(string[] args)
{
    var windowHandle = new WindowInteropHelper(new Window()).Handle;

    var swapChainExample = new SwapChainExample();
    swapChainExample.Initialize(windowHandle);
    swapChainExample.CreateRenderTargetView();

    // 主渲染循环
    while (true)
    {
        // 清除渲染目标视图
        swapChainExample.device.ImmediateContext.ClearRenderTargetView(swapChainExample.renderTargetView, Color.CornflowerBlue);

        // 在这里进行你的2D渲染

        // 呈现交换链
        swapChainExample.Present();
    }
}

public void OnResize(int width, int height)
{
    swapChainExample.Resize(width, height);
}