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namespace RealTimeGraphEx.DX2D
{
using System;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Interop;
using SharpDX.Direct3D9;
using System.Threading;
class DX10ImageSource : D3DImage, IDisposable
{
private static int ActiveClients;
private static Direct3DEx D3DContext;
private static DeviceEx D3DDevice;
private Texture RenderTarget;
public DX10ImageSource()
{
this.StartD3D();
DX10ImageSource.ActiveClients++;
}
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2213:DisposableFieldsShouldBeDisposed", MessageId = "RenderTarget")]
public void Dispose()
{
this.SetRenderTargetDX10(null);
// Here, we have our Dispose call
Disposer.SafeDispose(ref this.RenderTarget);
DX10ImageSource.ActiveClients--;
this.EndD3D();
}
public void InvalidateD3DImage()
{
if (this.RenderTarget != null)
{
base.Lock();
base.AddDirtyRect(new Int32Rect(0, 0, base.PixelWidth, base.PixelHeight));
base.Unlock();
}
}
public void SetRenderTargetDX10(SharpDX.Direct3D10.Texture2D renderTarget)
{
if (this.RenderTarget != null)
{
this.RenderTarget = null;
base.Lock();
base.SetBackBuffer(D3DResourceType.IDirect3DSurface9, IntPtr.Zero);
base.Unlock();
}
if (renderTarget == null)
return;
if (!IsShareable(renderTarget))
{
throw new ArgumentException("Texture must be created with ResourceOptionFlags.Shared");
}
Format format = DX10ImageSource.TranslateFormat(renderTarget);
if (format == Format.Unknown)
{
throw new ArgumentException("Texture format is not compatible with OpenSharedResource");
}
IntPtr handle = GetSharedHandle(renderTarget);
if (handle == IntPtr.Zero)
{
throw new ArgumentNullException("Handle");
}
this.RenderTarget = new Texture(DX10ImageSource.D3DDevice, renderTarget.Description.Width, renderTarget.Description.Height, 1, Usage.RenderTarget, format, Pool.Default, ref handle);
using (Surface surface = this.RenderTarget.GetSurfaceLevel(0))
{
base.Lock();
base.SetBackBuffer(D3DResourceType.IDirect3DSurface9, surface.NativePointer);
base.Unlock();
}
}
private void StartD3D()
{
if (DX10ImageSource.ActiveClients != 0)
{
return;
}
DX10ImageSource.D3DContext = new Direct3DEx();
var presentparams = new PresentParameters();
presentparams.Windowed = true;
presentparams.SwapEffect = SwapEffect.Discard;
presentparams.DeviceWindowHandle = NativeMethods.GetDesktopWindow();
presentparams.PresentationInterval = PresentInterval.Default;
presentparams.MultiSampleQuality = 0; //Set By Roy.
DX10ImageSource.D3DDevice = new DeviceEx(D3DContext, 0, DeviceType.Hardware, IntPtr.Zero, CreateFlags.HardwareVertexProcessing | CreateFlags.Multithreaded | CreateFlags.FpuPreserve, presentparams);
}
private void EndD3D()
{
if (DX10ImageSource.ActiveClients != 0)
{
return;
}
Disposer.SafeDispose(ref this.RenderTarget);
Disposer.SafeDispose(ref DX10ImageSource.D3DDevice);
Disposer.SafeDispose(ref DX10ImageSource.D3DContext);
}
private IntPtr GetSharedHandle(SharpDX.Direct3D10.Texture2D Texture)
{
var resource = Texture.QueryInterface<SharpDX.DXGI.Resource>();
var result = resource.SharedHandle;
resource.Dispose();
return result;
}
private static Format TranslateFormat(SharpDX.Direct3D10.Texture2D Texture)
{
switch (Texture.Description.Format)
{
case SharpDX.DXGI.Format.R10G10B10A2_UNorm:
return SharpDX.Direct3D9.Format.A2B10G10R10;
case SharpDX.DXGI.Format.R16G16B16A16_Float:
return SharpDX.Direct3D9.Format.A16B16G16R16F;
case SharpDX.DXGI.Format.B8G8R8A8_UNorm:
return SharpDX.Direct3D9.Format.A8R8G8B8;
default:
return SharpDX.Direct3D9.Format.Unknown;
}
}
private static bool IsShareable(SharpDX.Direct3D10.Texture2D Texture)
{
return (Texture.Description.OptionFlags & SharpDX.Direct3D10.ResourceOptionFlags.Shared) != 0;
}
}
}
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