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    <p>Anyone looking for a solution, we wrote a custom winforms control using DirectX 11 with a highly optimized copy into graphics memory, then hosted the control in a <code>WinformsHost</code>, I can provide some code to anyone who is interested.</p> <p><strong>Optimized copy into gpu memory</strong></p> <pre><code> // Using native memcpy for the fastest possible copy [DllImport("msvcrt.dll", EntryPoint = "memcpy", CallingConvention = CallingConvention.Cdecl, SetLastError = false)] private static extern IntPtr memcpy(IntPtr dest, IntPtr src, UIntPtr count); /// &lt;summary&gt; /// Copies a bitmap to gpu memory /// &lt;/summary&gt; /// &lt;param name="frame"&gt;The image to copy to the gpu&lt;/param&gt; /// &lt;returns&gt;A texture in gpu memory for the bitmap&lt;/returns&gt; public Texture2D CopyFrameToGpuMemory(Bitmap frame) { SampleDescription sampleDesc = new SampleDescription(); sampleDesc.Count = 1; sampleDesc.Quality = 0; Texture2DDescription texDesc = new Texture2DDescription() { ArraySize = 1, MipLevels = 1, SampleDescription = sampleDesc, Format = Format.B8G8R8A8_UNorm, CpuAccessFlags = CpuAccessFlags.Write, BindFlags = BindFlags.ShaderResource, Usage = ResourceUsage.Dynamic, Height = frame.Height, Width = frame.Width }; Texture2D tex = new Texture2D(Device, texDesc); Surface surface = tex.AsSurface(); DataRectangle mappedRect = surface.Map(SlimDX.DXGI.MapFlags.Write | SlimDX.DXGI.MapFlags.Discard); BitmapData pixelData = frame.LockBits(new Rectangle(0, 0, frame.Width, frame.Height), ImageLockMode.ReadOnly, PixelFormat.Format32bppRgb); unsafe //!!! { byte* pixelDataStart = (byte*)pixelData.Scan0.ToPointer(); byte* mappedRectDataStart = (byte*)mappedRect.Data.DataPointer.ToPointer(); for (int y = 0; y &lt; texDesc.Height; y++) { byte* lineLocationDest = mappedRectDataStart + (y * mappedRect.Pitch); byte* lineLocationSrc = pixelDataStart + (y * pixelData.Stride); // Copy line by line for best performance memcpy((IntPtr)lineLocationDest, (IntPtr)lineLocationSrc, (UIntPtr)(texDesc.Width * 4)); } } //!!! frame.UnlockBits(pixelData); mappedRect.Data.Dispose(); surface.Unmap(); surface.Dispose(); return tex; } </code></pre>
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    1. COCould you tell more how you optimized the copy into graphics memory?
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    2. CO@Thomas I just updated with the entire code of the method that does the copy
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    3. COinterested in your solution... could you send it to me? linusang{at}yahoo{dot}com
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