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();
}
/// <summary>To be documented.</summary>
public readonly unsafe int CreateDevice(uint Adapter, Devtype DeviceType, nint hFocusWindow, uint BehaviorFlags, ref PresentParameters pPresentationParameters, ref IDirect3DDevice9 *ppReturnedDeviceInterface)
{
var @this = (IDirect3D9 *)Unsafe.AsPointer(ref Unsafe.AsRef(in this));
int ret = default;
fixed(PresentParameters *pPresentationParametersPtr = &pPresentationParameters)
{
fixed(IDirect3DDevice9 **ppReturnedDeviceInterfacePtr = &ppReturnedDeviceInterface)
{
ret = ((delegate * unmanaged[Cdecl] < IDirect3D9 *, uint, Devtype, nint, uint, PresentParameters *, IDirect3DDevice9 **, int >)LpVtbl[16])(@this, Adapter, DeviceType, hFocusWindow, BehaviorFlags, pPresentationParametersPtr, ppReturnedDeviceInterfacePtr);
}
}
return(ret);
}