private void MainWindow_Loaded(object sender, RoutedEventArgs e)
{
// 根据 [Surface sharing between Windows graphics APIs - Win32 apps](https://docs.microsoft.com/en-us/windows/win32/direct3darticles/surface-sharing-between-windows-graphics-apis?WT.mc_id=WD-MVP-5003260 ) 文档
var width = ImageWidth;
var height = ImageHeight;
// 2021.12.23 不能在 x86 下运行，会炸掉。参阅 https://github.com/dotnet/Silk.NET/issues/731
var texture2DDesc = new D3D11.Texture2DDesc()
{
BindFlags = (uint)(D3D11.BindFlag.BindRenderTarget | D3D11.BindFlag.BindShaderResource),
Format = DXGI.Format.FormatB8G8R8A8Unorm, // 最好使用此格式，否则还需要后续转换
Width = (uint)width,
Height = (uint)height,
MipLevels = 1,
SampleDesc = new DXGI.SampleDesc(1, 0),
Usage = D3D11.Usage.UsageDefault,
MiscFlags = (uint)D3D11.ResourceMiscFlag.ResourceMiscShared,
// The D3D11_RESOURCE_MISC_FLAG cannot be used when creating resources with D3D11_CPU_ACCESS flags.
CPUAccessFlags = 0, //(uint) D3D11.CpuAccessFlag.None,
ArraySize = 1
};
D3D11.ID3D11Device * pD3D11Device;
D3D11.ID3D11DeviceContext *pD3D11DeviceContext;
D3DFeatureLevel pD3DFeatureLevel = default;
D3D11.D3D11 d3D11 = D3D11.D3D11.GetApi();
var hr = d3D11.CreateDevice((DXGI.IDXGIAdapter *)IntPtr.Zero, D3DDriverType.D3DDriverTypeHardware,
Software: 0,
Flags: (uint)D3D11.CreateDeviceFlag.CreateDeviceBgraSupport,
(D3DFeatureLevel *)IntPtr.Zero,
FeatureLevels: 0, // D3DFeatureLevel 的长度
SDKVersion: 7,
(D3D11.ID3D11Device * *) & pD3D11Device, // 参阅 [C# 从零开始写 SharpDx 应用 聊聊功能等级](https://blog.lindexi.com/post/C-%E4%BB%8E%E9%9B%B6%E5%BC%80%E5%A7%8B%E5%86%99-SharpDx-%E5%BA%94%E7%94%A8-%E8%81%8A%E8%81%8A%E5%8A%9F%E8%83%BD%E7%AD%89%E7%BA%A7.html )
ref pD3DFeatureLevel,
(D3D11.ID3D11DeviceContext * *) & pD3D11DeviceContext
);
SilkMarshal.ThrowHResult(hr);
Debugger.Launch();
Debugger.Break();
_pD3D11Device = pD3D11Device;
_pD3D11DeviceContext = pD3D11DeviceContext;
D3D11.ID3D11Texture2D *pD3D11Texture2D;
hr = pD3D11Device->CreateTexture2D(ref texture2DDesc, (D3D11.SubresourceData *)IntPtr.Zero, &pD3D11Texture2D);
SilkMarshal.ThrowHResult(hr);
var renderTarget = pD3D11Texture2D;
_pD3D11Texture2D = pD3D11Texture2D;
DXGI.IDXGISurface *pDXGISurface;
var dxgiSurfaceGuid = DXGI.IDXGISurface.Guid;
renderTarget->QueryInterface(ref dxgiSurfaceGuid, (void **)&pDXGISurface);
_pDXGISurface = pDXGISurface;
var d2DFactory = new D2D.Factory();
var renderTargetProperties =
new D2D.RenderTargetProperties(new D2D.PixelFormat(SharpDXDXGI.Format.Unknown, D2D.AlphaMode.Premultiplied));
var surface = new SharpDXDXGI.Surface(new IntPtr((void *)pDXGISurface));
_d2DRenderTarget = new D2D.RenderTarget(d2DFactory, surface, renderTargetProperties);
SetRenderTarget(renderTarget);
var viewport = new D3D11.Viewport(0, 0, width, height, 0, 1);
pD3D11DeviceContext->RSSetViewports(NumViewports: 1, ref viewport);
CompositionTarget.Rendering += CompositionTarget_Rendering;
}
private void SetRenderTarget(D3D11.ID3D11Texture2D *target)
{
DXGI.IDXGIResource *pDXGIResource;
var dxgiResourceGuid = DXGI.IDXGIResource.Guid;
target->QueryInterface(ref dxgiResourceGuid, (void **)&pDXGIResource);
D3D11.Texture2DDesc texture2DDescription = default;
target->GetDesc(ref texture2DDescription);
void *sharedHandle;
var hr = pDXGIResource->GetSharedHandle(&sharedHandle);
SilkMarshal.ThrowHResult(hr);
var d3d9 = D3D9.D3D9.GetApi();
D3D9.IDirect3D9Ex *pDirect3D9Ex;
hr = d3d9.Direct3DCreate9Ex(SDKVersion: 32, &pDirect3D9Ex);
SilkMarshal.ThrowHResult(hr);
var d3DContext = pDirect3D9Ex;
_pDirect3D9Ex = pDirect3D9Ex;
var presentParameters = new D3D9.PresentParameters()
{
Windowed = 1,// true
SwapEffect = D3D9.Swapeffect.SwapeffectDiscard,
HDeviceWindow = GetDesktopWindow(),
PresentationInterval = D3D9.D3D9.PresentIntervalDefault,
};
// 设置使用多线程方式，这样的性能才足够
uint createFlags = D3D9.D3D9.CreateHardwareVertexprocessing | D3D9.D3D9.CreateMultithreaded | D3D9.D3D9.CreateFpuPreserve;
D3D9.IDirect3DDevice9Ex *pDirect3DDevice9Ex;
hr = d3DContext->CreateDeviceEx(Adapter: 0,
DeviceType: D3D9.Devtype.DevtypeHal,// 使用硬件渲染
hFocusWindow: IntPtr.Zero,
createFlags,
ref presentParameters,
pFullscreenDisplayMode: (D3D9.Displaymodeex *)IntPtr.Zero,
&pDirect3DDevice9Ex);
SilkMarshal.ThrowHResult(hr);
var d3DDevice = pDirect3DDevice9Ex;
D3D9.IDirect3DTexture9 *pDirect3DTexture9;
hr = d3DDevice->CreateTexture(texture2DDescription.Width, texture2DDescription.Height, Levels: 1,
D3D9.D3D9.UsageRendertarget,
D3D9.Format.FmtA8R8G8B8, // 这是必须要求的颜色，不能使用其他颜色
D3D9.Pool.PoolDefault,
&pDirect3DTexture9,
&sharedHandle);
SilkMarshal.ThrowHResult(hr);
_renderTarget = pDirect3DTexture9;
D3D9.IDirect3DSurface9 *pDirect3DSurface9;
_renderTarget->GetSurfaceLevel(0, &pDirect3DSurface9);
_pDirect3DSurface9 = pDirect3DSurface9;
D3DImage.Lock();
D3DImage.SetBackBuffer(D3DResourceType.IDirect3DSurface9, new IntPtr(pDirect3DSurface9));
D3DImage.Unlock();
}