public TextRenderer(Device device) { using (var factory = new SlimDX.DXGI.Factory1()) { using (var adapter = factory.GetAdapter1(0)) { this.device = new SlimDX.Direct3D10_1.Device1( adapter, SlimDX.Direct3D10.DriverType.Hardware, SlimDX.Direct3D10.DeviceCreationFlags.BgraSupport, SlimDX.Direct3D10_1.FeatureLevel.Level_10_0 ); // Create the DirectX11 texture2D. This texture will be shared with the DirectX10 // device. The DirectX10 device will be used to render text onto this texture. DirectX11 // will then draw this texture (blended) onto the screen. // The KeyedMutex flag is required in order to share this resource. textureD3D11 = new SlimDX.Direct3D11.Texture2D(device.Handle, new SlimDX.Direct3D11.Texture2DDescription { Width = device.Form.Width, Height = device.Form.Height, MipLevels = 1, ArraySize = 1, Format = SlimDX.DXGI.Format.B8G8R8A8_UNorm, SampleDescription = new SlimDX.DXGI.SampleDescription(1, 0), Usage = SlimDX.Direct3D11.ResourceUsage.Default, BindFlags = SlimDX.Direct3D11.BindFlags.RenderTarget | SlimDX.Direct3D11.BindFlags.ShaderResource, CpuAccessFlags = SlimDX.Direct3D11.CpuAccessFlags.None, OptionFlags = SlimDX.Direct3D11.ResourceOptionFlags.KeyedMutex }); // A DirectX10 Texture2D sharing the DirectX11 Texture2D var sharedResource = new SlimDX.DXGI.Resource(textureD3D11); var textureD3D10 = this.device.OpenSharedResource<SlimDX.Direct3D10.Texture2D>(sharedResource.SharedHandle); // The KeyedMutex is used just prior to writing to textureD3D11 or textureD3D10. // This is how DirectX knows which DirectX (10 or 11) is supposed to be writing // to the shared texture. The keyedMutex is just defined here, they will be used // a bit later. mutex10 = new SlimDX.DXGI.KeyedMutex(textureD3D10); mutex11 = new SlimDX.DXGI.KeyedMutex(textureD3D11); // Direct2D Factory SlimDX.Direct2D.Factory d2Factory = new SlimDX.Direct2D.Factory( SlimDX.Direct2D.FactoryType.SingleThreaded, SlimDX.Direct2D.DebugLevel.Information ); // Direct Write factory SlimDX.DirectWrite.Factory dwFactory = new SlimDX.DirectWrite.Factory( SlimDX.DirectWrite.FactoryType.Isolated ); // The textFormat we will use to draw text with textFormat = new SlimDX.DirectWrite.TextFormat( dwFactory, "Arial", SlimDX.DirectWrite.FontWeight.Normal, SlimDX.DirectWrite.FontStyle.Normal, SlimDX.DirectWrite.FontStretch.Normal, 24, "en-US" ); textFormat.TextAlignment = SlimDX.DirectWrite.TextAlignment.Center; textFormat.ParagraphAlignment = SlimDX.DirectWrite.ParagraphAlignment.Center; // Query for a IDXGISurface. // DirectWrite and DirectX10 can interoperate thru DXGI. var surface = textureD3D10.AsSurface(); var rtp = new SlimDX.Direct2D.RenderTargetProperties(); rtp.MinimumFeatureLevel = SlimDX.Direct2D.FeatureLevel.Direct3D10; rtp.Type = SlimDX.Direct2D.RenderTargetType.Hardware; rtp.Usage = SlimDX.Direct2D.RenderTargetUsage.None; rtp.PixelFormat = new SlimDX.Direct2D.PixelFormat(SlimDX.DXGI.Format.Unknown, SlimDX.Direct2D.AlphaMode.Premultiplied); dwRenderTarget = SlimDX.Direct2D.RenderTarget.FromDXGI(d2Factory, surface, rtp); // Brush used to DrawText brushSolidWhite = new SlimDX.Direct2D.SolidColorBrush( dwRenderTarget, new SlimDX.Color4(1, 1, 1, 1) ); // Think of the shared textureD3D10 as an overlay. // The overlay needs to show the text but let the underlying triangle (or whatever) // show thru, which is accomplished by blending. var bsd = new SlimDX.Direct3D11.BlendStateDescription(); bsd.RenderTargets[0].BlendEnable = true; bsd.RenderTargets[0].SourceBlend = SlimDX.Direct3D11.BlendOption.SourceAlpha; bsd.RenderTargets[0].DestinationBlend = SlimDX.Direct3D11.BlendOption.InverseSourceAlpha; bsd.RenderTargets[0].BlendOperation = SlimDX.Direct3D11.BlendOperation.Add; bsd.RenderTargets[0].SourceBlendAlpha = SlimDX.Direct3D11.BlendOption.One; bsd.RenderTargets[0].DestinationBlendAlpha = SlimDX.Direct3D11.BlendOption.Zero; bsd.RenderTargets[0].BlendOperationAlpha = SlimDX.Direct3D11.BlendOperation.Add; bsd.RenderTargets[0].RenderTargetWriteMask = SlimDX.Direct3D11.ColorWriteMaskFlags.All; BlendState_Transparent = SlimDX.Direct3D11.BlendState.FromDescription(device.Handle, bsd); // Load Effect. This includes both the vertex and pixel shaders. // Also can include more than one technique. var shaderByteCode = SlimDX.D3DCompiler.ShaderBytecode.CompileFromFile( "texteffect.fx", "fx_5_0", SlimDX.D3DCompiler.ShaderFlags.EnableStrictness, SlimDX.D3DCompiler.EffectFlags.None); effect = new SlimDX.Direct3D11.Effect(device.Handle, shaderByteCode); // create triangle vertex data, making sure to rewind the stream afterward var verticesTriangle = new SlimDX.DataStream(30 * 3, true, true); verticesTriangle.Write(new SlimDX.Vector3(0.0f, 0.5f, 0.5f)); verticesTriangle.Write(new SlimDX.Color4(1.0f, 0.0f, 0.0f, 1.0f)); verticesTriangle.Write(new SlimDX.Vector3(0.5f, -0.5f, 0.5f)); verticesTriangle.Write(new SlimDX.Color4(0.0f, 1.0f, 0.0f, 1.0f)); verticesTriangle.Write(new SlimDX.Vector3(-0.5f, -0.5f, 0.5f)); verticesTriangle.Write(new SlimDX.Color4(0.0f, 0.0f, 1.0f, 1.0f)); verticesTriangle.Position = 0; // create the triangle vertex layout and buffer var inputElements = new SlimDX.Direct3D11.InputElement[] { new SlimDX.Direct3D11.InputElement("POSITION", 0, SlimDX.DXGI.Format.R32G32B32A32_Float, 0, 0), new SlimDX.Direct3D11.InputElement("COLOR",0,SlimDX.DXGI.Format.R32G32B32A32_Float,16,0) }; var layoutColor = new SlimDX.Direct3D11.InputLayout(device.Handle, effect.GetTechniqueByName("Color").GetPassByIndex(0).Description.Signature, inputElements); var vertexBufferColor = new SlimDX.Direct3D11.Buffer(device.Handle, verticesTriangle, (int)verticesTriangle.Length, SlimDX.Direct3D11.ResourceUsage.Default, SlimDX.Direct3D11.BindFlags.VertexBuffer, SlimDX.Direct3D11.CpuAccessFlags.None, SlimDX.Direct3D11.ResourceOptionFlags.None, 0); verticesTriangle.Close(); // create text vertex data, making sure to rewind the stream afterward // Top Left of screen is -1, +1 // Bottom Right of screen is +1, -1 var verticesText = new SlimDX.DataStream(30 * 4, true, true); verticesText.Write(new SlimDX.Vector3(-1, 1, 0)); verticesText.Write(new SlimDX.Vector2(0, 0f)); verticesText.Write(new SlimDX.Vector3(1, 1, 0)); verticesText.Write(new SlimDX.Vector2(1, 0)); verticesText.Write(new SlimDX.Vector3(-1, -1, 0)); verticesText.Write(new SlimDX.Vector2(0, 1)); verticesText.Write(new SlimDX.Vector3(1, -1, 0)); verticesText.Write(new SlimDX.Vector2(1, 1)); verticesText.Position = 0; // create the text vertex layout and buffer layoutText = new SlimDX.Direct3D11.InputLayout(device.Handle, effect.GetTechniqueByName("Text").GetPassByIndex(0).Description.Signature, inputElements); vertexBufferText = new SlimDX.Direct3D11.Buffer(device.Handle, verticesText, (int)verticesText.Length, SlimDX.Direct3D11.ResourceUsage.Default, SlimDX.Direct3D11.BindFlags.VertexBuffer, SlimDX.Direct3D11.CpuAccessFlags.None, SlimDX.Direct3D11.ResourceOptionFlags.None, 0); verticesText.Close(); } } }
public void Render(Device device) { // Draw Text on the shared Texture2D // Need to Acquire the shared texture for use with DirectX10 mutex10.Acquire(0, 100); dwRenderTarget.BeginDraw(); dwRenderTarget.Clear(new SlimDX.Color4(0, 0, 0, 0)); const string text = "Hello world!"; dwRenderTarget.DrawText(text, textFormat, new System.Drawing.Rectangle(0, 0, device.Form.Width, device.Form.Height), brushSolidWhite); dwRenderTarget.EndDraw(); mutex10.Release(0); // Draw the shared texture2D onto the screen // Need to Aquire the shared texture for use with DirectX11 mutex11.Acquire(0, 100); var srv = new SlimDX.Direct3D11.ShaderResourceView(device.Handle, textureD3D11); effect.GetVariableByName("g_textOverlay").AsResource().SetResource(srv); device.Context.InputAssembler.InputLayout = layoutText; device.Context.InputAssembler.PrimitiveTopology = SlimDX.Direct3D11.PrimitiveTopology.TriangleStrip; device.Context.InputAssembler.SetVertexBuffers(0, new SlimDX.Direct3D11.VertexBufferBinding(vertexBufferText, 30 * 4, 0)); device.Context.OutputMerger.BlendState = BlendState_Transparent; var currentTechnique = effect.GetTechniqueByName("Text"); for (int pass = 0; pass < currentTechnique.Description.PassCount; ++pass) { var Pass = currentTechnique.GetPassByIndex(pass); System.Diagnostics.Debug.Assert(Pass.IsValid, "Invalid EffectPass"); Pass.Apply(device.Context); device.Context.Draw(4, 0); } srv.Dispose(); mutex11.Release(0); }