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上一篇：从零开始的SharpDX（一）——创建SharpDX窗口
完整代码：
using System;
using System.Drawing;
using SharpDX.Direct3D;
using SharpDX.DXGI;
using SharpDX.Mathematics.Interop;
using SharpDX.Windows;
using D3D11 = SharpDX.Direct3D11;
namespace CreateWindow
{
class Program
{
static void Main(string[] args)
{
using (var temp = new CreateSharpDXWindow())
{
temp.Run();
}
}
}
class CreateSharpDXWindow : IDisposable
{
public CreateSharpDXWindow()
{
_renderForm = new RenderForm();
_renderForm.ClientSize = new Size(Width, Height);
//自己写的方法
InitializeDeviceResources();
}
private const int Width = 1280;
private const int Height = 720;
public void Run()
{
RenderLoop.Run(_renderForm, RenderCallback);
}
private RenderForm _renderForm;
private D3D11.Device _d3DDevice;
private D3D11.DeviceContext _d3DDeviceContext;
private SwapChain _swapChain;
private D3D11.RenderTargetView _renderTargetView;
private void RenderCallback()
{
Draw();
}
private void InitializeDeviceResources()
{
//模式描述，参数1，参数2，是大小，参数3是刷新率，表示60Hz，最后一个参数是像素格式
ModeDescription backBufferDesc =
new ModeDescription(Width, Height, new Rational(60, 1), Format.R8G8B8A8_UNorm);
//定义交换链 - SharpDX程序必写部分
SwapChainDescription swapChainDesc = new SwapChainDescription()
{
//模式描述
ModeDescription = backBufferDesc,
//优化图片渲染。参数1，表示指定每个像素的采样数量；参数2，表示质量级别
SampleDescription = new SampleDescription(1, 0),
//设置CPU访问缓冲的权限
Usage = Usage.RenderTargetOutput,
//BufferCount=1表示双缓冲
BufferCount = 1,
//获取所要渲染窗口的句柄
OutputHandle = _renderForm.Handle,
//窗口化
IsWindowed = true
};
//创建交换链 - 参数1，表示希望使用GPU渲染；参数2，选不使用特殊的方法；参数3，输入已定义的交换链描述；参数4，参数5，是输出的交换链和设备
D3D11.Device.CreateWithSwapChain(DriverType.Hardware, D3D11.DeviceCreationFlags.None, swapChainDesc,
out _d3DDevice, out _swapChain);
//描述设备如何绘制的渲染设备上下文
_d3DDeviceContext = _d3DDevice.ImmediateContext;
//获得纹理并加入缓冲区
using (D3D11.Texture2D backBuffer = _swapChain.GetBackBuffer<D3D11.Texture2D>(0))
{
//渲染目标视图
_renderTargetView = new D3D11.RenderTargetView(_d3DDevice, backBuffer);
}
}
private void Draw()
{
//获得刚才得到的 - 渲染目标视图，并开始渲染
_d3DDeviceContext.OutputMerger.SetRenderTargets(_renderTargetView);
//清理_renderTargetView，并设置颜色
_d3DDeviceContext.ClearRenderTargetView(_renderTargetView, ColorToRaw4(Color.AliceBlue));
//等待垂直同步，参数1是同步间隔，参数2是演示的标识
_swapChain.Present(1, PresentFlags.None);
//创建原生颜色,并设置RGBA,默认255
RawColor4 ColorToRaw4(Color color)
{
const float n = 255f;
return new RawColor4(color.R / n, color.G / n, color.B / n, color.A / n);
}
}
//释放资源
public void Dispose()
{
_renderTargetView.Dispose();
_swapChain.Dispose();
_d3DDevice.Dispose();
_d3DDeviceContext.Dispose();
_renderForm?.Dispose();
}
}
}
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