现在的情况
>我被注入目标进程
>目标进程’FeatureLevel = Level_11_0
>目标SwapChain正在使用dxgi_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH标志.
> SwapChain :: Present函数挂钩.
>屏幕截图显示黑色和目标进程崩溃.没有截图过程运行正常.
期望的情况
使截图正确,让目标进程继续正常执行.
码
注意Hook类与链接中的相同.我只添加了一个UnmodifiableHook版本,它的名称说.我省略了所有不重要的位.
TestSwapChainHook.cs
using System;using System.Runtime.InteropServices;namespace Test{ public sealed class TestSwapChainHook : Idisposable { private enum IdxgiSwapChainVirtualtable { queryInterface = 0,AddRef = 1,Release = 2,SetPrivateData = 3,SetPrivateDataInterface = 4,GetPrivateData = 5,GetParent = 6,GetDevice = 7,Present = 8,GetBuffer = 9,SetFullscreenState = 10,GetFullscreenState = 11,GetDesc = 12,ResizeBuffers = 13,ResizeTarget = 14,GetContainingOutput = 15,GetFrameStatistics = 16,GetLastPresentCount = 17,} public static Readonly int VIRTUAL_METHOD_COUNT_LEVEL_DEFAulT = 18; private static IntPtr[] SWAP_CHAIN_VIRTUAL_table_ADDRESSES; [UnmanagedFunctionPointer(CallingConvention.StdCall,CharSet = CharSet.Unicode,SetLastError = true)] public delegate int dxgiSwapChainPresentDelegate(IntPtr thisPtr,uint syncInterval,SharpDX.dxgi.PresentFlags flags); public delegate int dxgiSwapChainPresentHookDelegate(UnmodifiableHook<dxgiSwapChainPresentDelegate> hook,IntPtr thisPtr,SharpDX.dxgi.PresentFlags flags); private dxgiSwapChainPresentHookDelegate _present; private Hook<dxgiSwapChainPresentDelegate> presentHook; static TestSwapChainHook() { SharpDX.dxgi.Rational rational = new SharpDX.dxgi.Rational(60,1); SharpDX.dxgi.ModeDescription modeDescription = new SharpDX.dxgi.ModeDescription(100,100,rational,SharpDX.dxgi.Format.R8G8B8A8_Unorm); SharpDX.dxgi.SampleDescription sampleDescription = new SharpDX.dxgi.SampleDescription(1,0); using (SharpDX.@R_301_5087@.RenderForm renderForm = new SharpDX.@R_301_5087@.RenderForm()) { SharpDX.dxgi.SwapChainDescription swapChainDescription = new SharpDX.dxgi.SwapChainDescription(); swapChainDescription.BufferCount = 1; swapChainDescription.Flags = SharpDX.dxgi.SwapChainFlags.None; swapChainDescription.IsWindowed = true; swapChainDescription.ModeDescription = modeDescription; swapChainDescription.OutputHandle = renderForm.Handle; swapChainDescription.SampleDescription = sampleDescription; swapChainDescription.SwapEffect = SharpDX.dxgi.SwapEffect.discard; swapChainDescription.Usage = SharpDX.dxgi.Usage.rendertargetOutput; SharpDX.Direct3D11.Device device = null; SharpDX.dxgi.SwapChain swapChain = null; SharpDX.Direct3D11.Device.CreateWithSwapChain(SharpDX.Direct3D.DriverType.HarDWare,SharpDX.Direct3D11.DeviceCreationFlags.BgraSupport,swapChainDescription,out device,out swapChain); try { IntPtr swapChainVirtualtable = Marshal.ReadIntPtr(swapChain.NativePointer); SWAP_CHAIN_VIRTUAL_table_ADDRESSES = new IntPtr[VIRTUAL_METHOD_COUNT_LEVEL_DEFAulT]; for (int x = 0; x < VIRTUAL_METHOD_COUNT_LEVEL_DEFAulT; x++) { SWAP_CHAIN_VIRTUAL_table_ADDRESSES[x] = Marshal.ReadIntPtr(swapChainVirtualtable,x * IntPtr.Size); } device.dispose(); swapChain.dispose(); } catch (Exception) { if (device != null) { device.dispose(); } if (swapChain != null) { swapChain.dispose(); } throw; } } } public TestSwapChainHook() { this._present = null; this.presentHook = new Hook<dxgiSwapChainPresentDelegate>( SWAP_CHAIN_VIRTUAL_table_ADDRESSES[(int)IdxgiSwapChainVirtualtable.Present],new dxgiSwapChainPresentDelegate(hookPresent),this); } public voID activate() { this.presentHook.activate(); } public voID deactivate() { this.presentHook.deactivate(); } private int hookPresent(IntPtr thisPtr,SharpDX.dxgi.PresentFlags flags) { lock (this.presentHook) { if (this._present == null) { return this.presentHook.original(thisPtr,syncInterval,flags); } else { return this._present(new UnmodifiableHook<dxgiSwapChainPresentDelegate>(this.presentHook),thisPtr,flags); } } } public dxgiSwapChainPresentHookDelegate present { get { lock (this.presentHook) { return this._present; } } set { lock (this.presentHook) { this._present = value; } } } }} 使用代码
初始化
private TestSwapChain swapChainHook;private bool capture = false;private object captureLock = new object();this.swapChainHook = new TestSwapChainHook();this.swapChainHook.present = presentHook;this.swapChainHook.activate();
编辑
我用不同的方法来捕获this链接中描述的截图.不过我的屏幕截图如下：
现在,这似乎是我的转换设置或任何问题,但我无法找出我需要做什么来解决它.我知道我正在转换为位图的表面使用dxgi_FORMAT_R10G10B10A2_UnorM格式(32位,每种颜色10位,而我认为的是2).但是我不知道这在if循环中是如何工作的(跳过字节和东西).我只是简单的复制粘贴它.
新的钩子功能
private int presentHook(UnmodifiableHook<IdxgiSwapChainHook.dxgiSwapChainPresentDelegate> hook,SharpDX.dxgi.PresentFlags flags){ try { lock (this.captureLock) { if (this.capture) { SharpDX.dxgi.SwapChain swapChain = (SharpDX.dxgi.SwapChain)thisPtr; using (SharpDX.Direct3D11.Texture2D backBuffer = swapChain.GetBackBuffer<SharpDX.Direct3D11.Texture2D>(0)) { SharpDX.Direct3D11.Texture2DDescription texture2DDescription = backBuffer.Description; texture2DDescription.cpuAccessFlags = SharpDX.Direct3D11.cpuAccessFlags.Read; texture2DDescription.Usage = SharpDX.Direct3D11.ResourceUsage.Staging; texture2DDescription.OptionFlags = SharpDX.Direct3D11.ResourceOptionFlags.None; texture2DDescription.BindFlags = SharpDX.Direct3D11.BindFlags.None; using (SharpDX.Direct3D11.Texture2D texture = new SharpDX.Direct3D11.Texture2D(backBuffer.Device,texture2DDescription)) { //dxgi_FORMAT_R10G10B10A2_UnorM backBuffer.Device.ImmediateContext.copyResource(backBuffer,texture); using (SharpDX.dxgi.Surface surface = texture.queryInterface<SharpDX.dxgi.Surface>()) { SharpDX.DataStream dataStream; SharpDX.DataRectangle map = surface.Map(SharpDX.dxgi.MapFlags.Read,out dataStream); try { byte[] pixelData = new byte[surface.Description.WIDth * surface.Description.Height * 4]; int lines = (int)(dataStream.Length / map.Pitch); int dataCounter = 0; int actualWIDth = surface.Description.WIDth * 4; for (int y = 0; y < lines; y++) { for (int x = 0; x < map.Pitch; x++) { if (x < actualWIDth) { pixelData[dataCounter++] = dataStream.Read<byte>(); } else { dataStream.Read<byte>(); } } } GCHandle handle = GCHandle.Alloc(pixelData,GCHandleType.Pinned); try { using (Bitmap bitmap = new Bitmap(surface.Description.WIDth,surface.Description.Height,map.Pitch,PixelFormat.Format32bppArgb,handle.AddrOfPinnedobject())) { bitmap.Save(@"C:\Users\SOMEUSERname\Desktop\test.bmp"); } } finally { if (handle.IsAllocated) { handle.Free(); } } } finally { surface.Unmap(); dataStream.dispose(); } } } } this.capture = false; } } } catch(Exception ex) { MessageBox.Show(ex.ToString()); } return hook.original(thisPtr,flags);} 回答
结果dxgi_FORMAT_R10G10B10A2_UnorM格式是这种位格式：
A=AlphaB=blueG=greenR=redAABBBBBB BBBBGGGG GGGGGGRR RRRRRRRR
而格式32bppArgb是这样的字节顺序：
BGRA
所以最后的循环代码是：
while (pixelindex < pixelData.Length){ uint currentPixel = dataStream.Read<uint>(); uint r = (currentPixel & 0x3FF); uint g = (currentPixel & 0xFFC00) >> 10; uint b = (currentPixel & 0x3FF00000) >> 20; uint a = (currentPixel & 0xC0000000) >> 30; pixelData[pixelindex++] = (byte)(b >> 2); pixelData[pixelindex++] = (byte)(g >> 2); pixelData[pixelindex++] = (byte)(r >> 2); pixelData[pixelindex++] = (byte)(a << 6); while ((pixelindex % map.Pitch) >= actualWIDth) { dataStream.Read<byte>(); pixelindex++; }}解决方法 那个屏幕截图看起来像R10G10B10A2被塞进R8G8B8A8.我没有测试过你的代码,但我们应该有这个位布局 xxxxxxxx yyyyyyyy zzzzzzzz wwwwwwwwRRRRRRRR RRGGGGGG GGGGBBBB BBBBBBAA
您可以如下提取它们
byte x = data[ptr++];byte y = data[ptr++];byte z = data[ptr++];byte w = data[ptr++];int r = x << 2 | y >> 6;int g = (y & 0x3F) << 4 | z >> 4;int b = (z & 0xF) << 6 | w >> 2;int a = w & 0x3;
其中r,g,b现在有10位分辨率.如果要将其缩放到字节,可以使用(byte)(r>> 2)来实现.
更新
这将取代你的双for循环.我没有办法测试,所以我不想进一步推进,但我相信这个想法是正确的.最后一次检查应该跳过每行的填充字节.
while(dataCounter < pixelData.Length){ byte x = dataStream.Read<byte>(); byte y = dataStream.Read<byte>(); byte z = dataStream.Read<byte>(); byte w = dataStream.Read<byte>(); int r = x << 2 | y >> 6; int g = (y & 0x3F) << 4 | z >> 4; int b = (z & 0xF) << 6 | w >> 2; int a = w & 0x3; pixelData[dataCounter++] = (byte)(r >> 2); pixelData[dataCounter++] = (byte)(g >> 2); pixelData[dataCounter++] = (byte)(b >> 2); pixelData[dataCounter++] = (byte)(a << 6); while((dataCounter % map.Pitch) >= actualWIDth) { dataStream.Read<byte>(); dataCounter++; }} 总结 以上是内存溢出为你收集整理的c# – 使用SharpDX和EasyHook捕获全屏DX11程序的截图全部内容，希望文章能够帮你解决c# – 使用SharpDX和EasyHook捕获全屏DX11程序的截图所遇到的程序开发问题。
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