C# Direct3D11.VertexShader类代码示例

        public TextureShader(Device device)
        {
            var vertexShaderByteCode = ShaderBytecode.CompileFromFile(ShaderFileName, "TextureVertexShader", "vs_4_0", ShaderFlags);
            var pixelShaderByteCode = ShaderBytecode.CompileFromFile(ShaderFileName, "TexturePixelShader", "ps_4_0", ShaderFlags);

            VertexShader = new VertexShader(device, vertexShaderByteCode);
            PixelShader = new PixelShader(device, pixelShaderByteCode);

            Layout = VertexDefinition.PositionTexture.GetInputLayout(device, vertexShaderByteCode);

            vertexShaderByteCode.Dispose();
            pixelShaderByteCode.Dispose();

            ConstantMatrixBuffer = new Buffer(device, MatrixBufferDesription);

            // Create a texture sampler state description.
            var samplerDesc = new SamplerStateDescription
            {
                Filter = Filter.Anisotropic,
                AddressU = TextureAddressMode.Mirror,
                AddressV = TextureAddressMode.Mirror,
                AddressW = TextureAddressMode.Mirror,
                MipLodBias = 0,
                MaximumAnisotropy = 16,
                ComparisonFunction = Comparison.Always,
                BorderColor = new Color4(1, 1, 1, 1),
                MinimumLod = 0,
                MaximumLod = 0
            };

            // Create the texture sampler state.
            SamplerState = new SamplerState(device, samplerDesc);
        }

        public PathShader(Device device)
        {
            var vertexShaderByteCode = ShaderBytecode.CompileFromFile(FileName, "VS", "vs_4_0", ShaderFlags);
            var pixelShaderByteCode = ShaderBytecode.CompileFromFile(FileName, "PS", "ps_4_0", ShaderFlags);
            var geometryShaderByteCode = ShaderBytecode.CompileFromFile(FileName, "GS", "gs_4_0", ShaderFlags);

            VertexShader = new VertexShader(device, vertexShaderByteCode);
            PixelShader = new PixelShader(device, pixelShaderByteCode);
            GeometryShader = new GeometryShader(device, geometryShaderByteCode);
            Layout = VertexDefinition.Path.GetInputLayout(device, vertexShaderByteCode);

            vertexShaderByteCode.Dispose();
            pixelShaderByteCode.Dispose();
            geometryShaderByteCode.Dispose();

            ConstantMatrixBuffer = new Buffer(device, MatrixBufferDesription);
            ConstantPathDataBuffer = new Buffer(device,
                new BufferDescription
                {
                    Usage = ResourceUsage.Dynamic,
                    SizeInBytes = Utilities.SizeOf<PathData>(),
                    BindFlags = BindFlags.ConstantBuffer,
                    CpuAccessFlags = CpuAccessFlags.Write,
                    OptionFlags = ResourceOptionFlags.None,
                    StructureByteStride = 0
                });
            SamplerState = new SamplerState(device, WrapSamplerStateDescription);
        }

        public FilterPixelShader(Device device, int imageWidth, int imageHeight, int constantBufferSize, string pixelShaderBytecodeFilename)
        {
            vertexShader = new VertexShader(device, new ShaderBytecode(File.ReadAllBytes("Content/FullScreenQuadVS.cso")));
            pixelShader = new PixelShader(device, new ShaderBytecode(File.ReadAllBytes(pixelShaderBytecodeFilename)));

            var rasterizerStateDesc = new RasterizerStateDescription()
            {
                CullMode = CullMode.None, 
                FillMode = FillMode.Solid,
                IsDepthClipEnabled = false,
                IsFrontCounterClockwise = true,
                IsMultisampleEnabled = false,
            };
            rasterizerState = new RasterizerState(device, rasterizerStateDesc);

            if (constantBufferSize > 0)
            {
                var constantBufferDesc = new BufferDescription()
                {
                    Usage = ResourceUsage.Dynamic,
                    BindFlags = BindFlags.ConstantBuffer,
                    SizeInBytes = constantBufferSize,
                    CpuAccessFlags = CpuAccessFlags.Write,
                    StructureByteStride = 0,
                    OptionFlags = 0,
                };
                constantBuffer = new Buffer(device, constantBufferDesc);
            }

            viewport = new Viewport(0, 0, imageWidth, imageHeight); // TODO: get these dimensions
            vertexBufferBinding = new VertexBufferBinding(null, 0, 0);
        }

        private Shader(GraphicsDevice device, ShaderStage shaderStage, byte[] shaderBytecode)
            : base(device)
        {
            this.stage = shaderStage;

            switch (shaderStage)
            {
                case ShaderStage.Vertex:
                    NativeDeviceChild = new VertexShader(device.NativeDevice, shaderBytecode);
                    NativeInputSignature = shaderBytecode;
                    break;
                case ShaderStage.Hull:
                    NativeDeviceChild = new HullShader(device.NativeDevice, shaderBytecode);
                    break;
                case ShaderStage.Domain:
                    NativeDeviceChild = new DomainShader(device.NativeDevice, shaderBytecode);
                    break;
                case ShaderStage.Geometry:
                    NativeDeviceChild = new GeometryShader(device.NativeDevice, shaderBytecode);
                    break;
                case ShaderStage.Pixel:
                    NativeDeviceChild = new PixelShader(device.NativeDevice, shaderBytecode);
                    break;
                case ShaderStage.Compute:
                    NativeDeviceChild = new ComputeShader(device.NativeDevice, shaderBytecode);
                    break;
                default:
                    throw new ArgumentOutOfRangeException("shaderStage");
            }
        }

        public PhysicsDebugDraw(DeviceManager manager)
        {
            device = manager.Direct3DDevice;
            inputAssembler = device.ImmediateContext.InputAssembler;
            lineArray = new PositionColored[0];

            using (var bc = HLSLCompiler.CompileFromFile(@"Shaders\PhysicsDebug.hlsl", "VSMain", "vs_5_0"))
            {
                vertexShader = new VertexShader(device, bc);

                InputElement[] elements = new InputElement[]
                {
                    new InputElement("SV_POSITION", 0, Format.R32G32B32_Float, 0, 0, InputClassification.PerVertexData, 0),
                    new InputElement("COLOR", 0, Format.R8G8B8A8_UNorm, 12, 0, InputClassification.PerVertexData, 0)
                };
                inputLayout = new InputLayout(device, bc, elements);
            }

            vertexBufferDesc = new BufferDescription()
            {
                Usage = ResourceUsage.Dynamic,
                BindFlags = BindFlags.VertexBuffer,
                CpuAccessFlags = CpuAccessFlags.Write
            };

            vertexBufferBinding = new VertexBufferBinding(null, PositionColored.Stride, 0);

            using (var bc = HLSLCompiler.CompileFromFile(@"Shaders\PhysicsDebug.hlsl", "PSMain", "ps_5_0"))
                pixelShader = new PixelShader(device, bc);
        }

        public WorldTerrainShader(Device device)
        {
            var vertexShaderByteCode = ShaderBytecode.CompileFromFile(ShaderFileName, "TerrainVertexShader", "vs_4_0", ShaderFlags);
            var pixelShaderByteCode = ShaderBytecode.CompileFromFile(ShaderFileName, "TerrainPixelShader", "ps_4_0", ShaderFlags);

            VertexShader = new VertexShader(device, vertexShaderByteCode);
            PixelShader = new PixelShader(device, pixelShaderByteCode);

            Layout = VertexDefinition.PositionTexture.GetInputLayout(device, vertexShaderByteCode);

            vertexShaderByteCode.Dispose();
            pixelShaderByteCode.Dispose();

            ConstantMatrixBuffer = new Buffer(device, MatrixBufferDesription);

            var samplerDescMap = new SamplerStateDescription
            {
                Filter = Filter.MinMagMipPoint,
                AddressU = TextureAddressMode.Clamp,
                AddressV = TextureAddressMode.Clamp,
                AddressW = TextureAddressMode.Clamp,
                MipLodBias = 0,
                MaximumAnisotropy = 1,
                ComparisonFunction = Comparison.Always,
                BorderColor = Color.Transparent,
                MinimumLod = 0,
                MaximumLod = float.MaxValue
            };
            SamplerStateMap = new SamplerState(device, samplerDescMap);
        }

        public ProjectiveTexturingShader(Device device)
        {
            var shaderByteCode = new ShaderBytecode(File.ReadAllBytes("Content/DepthAndProjectiveTextureVS.cso"));
            vertexShader = new VertexShader(device, shaderByteCode);
            geometryShader = new GeometryShader(device, new ShaderBytecode(File.ReadAllBytes("Content/DepthAndColorGS.cso")));
            pixelShader = new PixelShader(device, new ShaderBytecode(File.ReadAllBytes("Content/DepthAndColorPS.cso")));

            // depth stencil state
            var depthStencilStateDesc = new DepthStencilStateDescription()
            {
                IsDepthEnabled = true,
                DepthWriteMask = DepthWriteMask.All,
                DepthComparison = Comparison.LessEqual,
                IsStencilEnabled = false,
            };
            depthStencilState = new DepthStencilState(device, depthStencilStateDesc);

            // rasterizer states
            var rasterizerStateDesc = new RasterizerStateDescription()
            {
                CullMode = CullMode.None,
                FillMode = FillMode.Solid,
                IsDepthClipEnabled = true,
                IsFrontCounterClockwise = true,
                IsMultisampleEnabled = true,
            };
            rasterizerState = new RasterizerState(device, rasterizerStateDesc);

            // constant buffer
            var constantBufferDesc = new BufferDescription()
            {
                Usage = ResourceUsage.Dynamic,
                BindFlags = BindFlags.ConstantBuffer,
                SizeInBytes = Constants.size,
                CpuAccessFlags = CpuAccessFlags.Write,
                StructureByteStride = 0,
                OptionFlags = 0,
            };
            constantBuffer = new SharpDX.Direct3D11.Buffer(device, constantBufferDesc);

            // user view sampler state
            var colorSamplerStateDesc = new SamplerStateDescription()
            {
                Filter = Filter.MinMagMipLinear,
                AddressU = TextureAddressMode.Border,
                AddressV = TextureAddressMode.Border,
                AddressW = TextureAddressMode.Border,
                //BorderColor = new SharpDX.Color4(0.5f, 0.5f, 0.5f, 1.0f),
                BorderColor = new SharpDX.Color4(0, 0, 0, 1.0f),
            };
            colorSamplerState = new SamplerState(device, colorSamplerStateDesc);

            vertexInputLayout = new InputLayout(device, shaderByteCode.Data, new[]
            {
                new InputElement("SV_POSITION", 0, Format.R32G32B32A32_Float, 0, 0),
            });

        }

        public TerrainMinimapShader(Device device)
        {
            var vertexShaderByteCode = ShaderBytecode.CompileFromFile(ShaderFileName, "MinimapTerrainVertexShader", "vs_4_0", ShaderFlags);
            var pixelShaderByteCode = ShaderBytecode.CompileFromFile(ShaderFileName, "MinimapTerrainPixelShader", "ps_4_0", ShaderFlags);

            VertexShader = new VertexShader(device, vertexShaderByteCode);
            PixelShader = new PixelShader(device, pixelShaderByteCode);

            Layout = VertexDefinition.TerrainVertex.GetInputLayout(device, vertexShaderByteCode);

            vertexShaderByteCode.Dispose();
            pixelShaderByteCode.Dispose();

            ConstantMatrixBuffer = new Buffer(device, MatrixBufferDesription);
            ConstantSelectionBuffer = new Buffer(device, new BufferDescription
            {
                Usage = ResourceUsage.Dynamic,
                SizeInBytes = Utilities.SizeOf<SelectionBuffer>(),
                BindFlags = BindFlags.ConstantBuffer,
                CpuAccessFlags = CpuAccessFlags.Write,
                OptionFlags = ResourceOptionFlags.None,
                StructureByteStride = 0
            });

            var samplerDescBorder = new SamplerStateDescription
            {
                Filter = Filter.Anisotropic,
                AddressU = TextureAddressMode.MirrorOnce,
                AddressV = TextureAddressMode.Clamp,
                AddressW = TextureAddressMode.Clamp,
                MipLodBias = 0,
                MaximumAnisotropy = 16,
                ComparisonFunction = Comparison.Always,
                BorderColor = Color.Transparent,
                MinimumLod = 0,
                MaximumLod = float.MaxValue
            };

            // Create the texture sampler state.
            SamplerStateBorder = new SamplerState(device, samplerDescBorder);

            var samplerDescColor = new SamplerStateDescription
            {
                Filter = Filter.Anisotropic,
                AddressU = TextureAddressMode.Wrap,
                AddressV = TextureAddressMode.Wrap,
                AddressW = TextureAddressMode.Wrap,
                MipLodBias = 0,
                MaximumAnisotropy = 16,
                ComparisonFunction = Comparison.Always,
                BorderColor = Color.Transparent,
                MinimumLod = 0,
                MaximumLod = float.MaxValue
            };

            // Create the texture sampler state.
            SamplerStateColor = new SamplerState(device, samplerDescColor);
        }

        public LightShader(Device device)
        {
            var vertexShaderByteCode = ShaderBytecode.CompileFromFile(ShaderFileName, "LightVertexShader", "vs_4_0", ShaderFlags);
            var pixelShaderByteCode = ShaderBytecode.CompileFromFile(ShaderFileName, "LightPixelShader", "ps_4_0", ShaderFlags);

            VertexShader = new VertexShader(device, vertexShaderByteCode);
            PixelShader = new PixelShader(device, pixelShaderByteCode);

            Layout = VertexDefinition.PositionTextureNormal.GetInputLayout(device, vertexShaderByteCode);

            vertexShaderByteCode.Dispose();
            pixelShaderByteCode.Dispose();

            ConstantMatrixBuffer = new Buffer(device, MatrixBufferDesription);

            // Setup the description of the dynamic matrix constant buffer that is in the vertex shader.
            var lightBufferDesc = new BufferDescription
            {
                Usage = ResourceUsage.Dynamic, // Updated each frame
                SizeInBytes = Utilities.SizeOf<LightBuffer>(), // Contains three matrices
                BindFlags = BindFlags.ConstantBuffer,
                CpuAccessFlags = CpuAccessFlags.Write,
                OptionFlags = ResourceOptionFlags.None,
                StructureByteStride = 0
            };
            ConstantLightBuffer = new Buffer(device, lightBufferDesc);

            // Setup the description of the dynamic matrix constant buffer that is in the vertex shader.
            var cameraBufferDesc = new BufferDescription
            {
                Usage = ResourceUsage.Dynamic, // Updated each frame
                SizeInBytes = Utilities.SizeOf<CameraBuffer>(), // Contains three matrices
                BindFlags = BindFlags.ConstantBuffer,
                CpuAccessFlags = CpuAccessFlags.Write,
                OptionFlags = ResourceOptionFlags.None,
                StructureByteStride = 0
            };
            ConstantCameraBuffer = new Buffer(device, cameraBufferDesc);

            // Create a texture sampler state description.
            var samplerDesc = new SamplerStateDescription
            {
                Filter = Filter.Anisotropic,
                AddressU = TextureAddressMode.Wrap,
                AddressV = TextureAddressMode.Wrap,
                AddressW = TextureAddressMode.Wrap,
                MipLodBias = 0,
                MaximumAnisotropy = 16,
                ComparisonFunction = Comparison.Always,
                BorderColor = new Color4(0, 0, 0, 0),
                MinimumLod = 0,
                MaximumLod = 10
            };

            // Create the texture sampler state.
            SamplerState = new SamplerState(device, samplerDesc);
        }

        private void CreateShaders()
        {
            foreach (var shaderBytecode in effectBytecode.Stages)
            {
                var bytecodeRaw = shaderBytecode.Data;
                var reflection = effectBytecode.Reflection;

                // TODO CACHE Shaders with a bytecode hash
                switch (shaderBytecode.Stage)
                {
                    case ShaderStage.Vertex:
                        vertexShader = new VertexShader(GraphicsDevice.NativeDevice, bytecodeRaw);
                        // Note: input signature can be reused when reseting device since it only stores non-GPU data,
                        // so just keep it if it has already been created before.
                        if (inputSignature == null)
                            inputSignature = EffectInputSignature.GetOrCreateLayout(new EffectInputSignature(shaderBytecode.Id, bytecodeRaw));
                        break;
                    case ShaderStage.Domain:
                        domainShader = new DomainShader(GraphicsDevice.NativeDevice, bytecodeRaw);
                        break;
                    case ShaderStage.Hull:
                        hullShader = new HullShader(GraphicsDevice.NativeDevice, bytecodeRaw);
                        break;
                    case ShaderStage.Geometry:
                        if (reflection.ShaderStreamOutputDeclarations != null && reflection.ShaderStreamOutputDeclarations.Count > 0)
                        {
                            // Calculate the strides
                            var soStrides = new List<int>();
                            foreach (var streamOutputElement in reflection.ShaderStreamOutputDeclarations)
                            {
                                for (int i = soStrides.Count; i < (streamOutputElement.Stream + 1); i++)
                                {
                                    soStrides.Add(0);
                                }

                                soStrides[streamOutputElement.Stream] += streamOutputElement.ComponentCount * sizeof(float);
                            }
                            var soElements = new StreamOutputElement[0]; // TODO CREATE StreamOutputElement from bytecode.Reflection.ShaderStreamOutputDeclarations
                            geometryShader = new GeometryShader(GraphicsDevice.NativeDevice, bytecodeRaw, soElements, soStrides.ToArray(), reflection.StreamOutputRasterizedStream);
                        }
                        else
                        {
                            geometryShader = new GeometryShader(GraphicsDevice.NativeDevice, bytecodeRaw);
                        }
                        break;
                    case ShaderStage.Pixel:
                        pixelShader = new PixelShader(GraphicsDevice.NativeDevice, bytecodeRaw);
                        break;
                    case ShaderStage.Compute:
                        computeShader = new ComputeShader(GraphicsDevice.NativeDevice, bytecodeRaw);
                        break;
                }
            }
        }

        public Style(String vertexShaderFilename, String pixelShaderFilename, InputElement[] layoutElements, int floatsPerVertex, DeviceManager deviceManager)
        {
            var path = Windows.ApplicationModel.Package.Current.InstalledLocation.Path;

            // Read pre-compiled shader byte code relative to current directory
            var vertexShaderByteCode = NativeFile.ReadAllBytes(path + "\\" + vertexShaderFilename);
            this.pixelShader = new PixelShader(deviceManager.DeviceDirect3D, NativeFile.ReadAllBytes(path + "\\" + pixelShaderFilename));
            this.vertexShader = new VertexShader(deviceManager.DeviceDirect3D, vertexShaderByteCode);

            // Specify the input layout for the new style
            this.layout = new InputLayout(deviceManager.DeviceDirect3D, vertexShaderByteCode, layoutElements);
            this.floatsPerVertex = floatsPerVertex;
        }

        internal unsafe void RecordCommands(MyRenderableProxy proxy, MyFoliageStream stream, int voxelMatId,
            VertexShader vertexShader, InputLayout inputLayout,
            int materialIndex, int indexCount, int startIndex, int baseVertex)
        {
            if (stream.m_stream == VertexBufferId.NULL) return;

            //var worldMatrix = proxy.WorldMatrix;
            //worldMatrix.Translation = Vector3D.Zero;
            //MyObjectData objectData = proxy.ObjectData;
            //objectData.LocalMatrix = Matrix.Identity;

            var worldMat = proxy.WorldMatrix;
            //worldMat.Translation -= MyRender11.Environment.CameraPosition;

            MyObjectDataCommon objectData = proxy.CommonObjectData;
            objectData.LocalMatrix = worldMat;

            MyMapping mapping = MyMapping.MapDiscard(RC, proxy.ObjectBuffer);
            mapping.WriteAndPosition(ref proxy.VoxelCommonObjectData);
            mapping.WriteAndPosition(ref objectData);
            mapping.Unmap();

            RC.AllShaderStages.SetConstantBuffer(MyCommon.OBJECT_SLOT, proxy.ObjectBuffer);

            BindProxyGeometry(proxy, RC);

            RC.VertexShader.Set(vertexShader);
            RC.SetInputLayout(inputLayout);

            int offset = -1;
            if (!stream.Append)
            {
                offset = 0;
                stream.Append = true;
            }

            RC.SetTarget(stream.m_stream.Buffer, offset);
            RC.AllShaderStages.SetConstantBuffer(MyCommon.FOLIAGE_SLOT, MyCommon.FoliageConstants);

            float densityFactor = MyVoxelMaterials1.Table[voxelMatId].FoliageDensity * MyRender11.Settings.GrassDensityFactor;

            float zero = 0;
            mapping = MyMapping.MapDiscard(RC, MyCommon.FoliageConstants);
            mapping.WriteAndPosition(ref densityFactor);
            mapping.WriteAndPosition(ref materialIndex);
            mapping.WriteAndPosition(ref voxelMatId);
            mapping.WriteAndPosition(ref zero);
            mapping.Unmap();

            RC.DrawIndexed(indexCount, startIndex, baseVertex);
        }

        private void InitializeEffect()
        {
            var vsBytecode = ShaderBytecode.CompileFromFile(string.Format(@"Content\{0}", FileName), "VS_Main", "vs_5_0");
            var psBytecode = ShaderBytecode.CompileFromFile(string.Format(@"Content\{0}", FileName), "PS_Main", "ps_5_0");

            _pixelShader = new PixelShader(_myGame.GraphicsDevice, psBytecode);
            _vertexShader = new VertexShader(_myGame.GraphicsDevice, vsBytecode);

            _layout = new InputLayout(_myGame.GraphicsDevice, ShaderSignature.GetInputSignature(vsBytecode), new[]
                    {
                        new InputElement("POSITION", 0, Format.R32G32_Float, 0, 0),
                        new InputElement("COLOR", 0, Format.R32G32B32A32_Float, 8, 0)
                    });
        }

        public ColorShader(Device device)
        {
            var vertexShaderByteCode = ShaderBytecode.CompileFromFile(ShaderFileName, "ColorVertexShader", "vs_4_0", ShaderFlags);
            var pixelShaderByteCode = ShaderBytecode.CompileFromFile(ShaderFileName, "ColorPixelShader", "ps_4_0", ShaderFlags);

            VertexShader = new VertexShader(device, vertexShaderByteCode);
            PixelShader = new PixelShader(device, pixelShaderByteCode);

            Layout = VertexDefinition.PositionColor.GetInputLayout(device, vertexShaderByteCode);

            vertexShaderByteCode.Dispose();
            pixelShaderByteCode.Dispose();

            ConstantMatrixBuffer = new Buffer(device, MatrixBufferDesription);
        }

        public ColorShader(Device device)
        {
            var vertexShaderByteCode = ShaderBytecode.CompileFromFile(VertexShaderFileName, "ColorVertexShader", "vs_4_0", ShaderFlags.None, EffectFlags.None);
            var pixelShaderByteCode = ShaderBytecode.CompileFromFile(PixelShaderFileName, "ColorPixelShader", "ps_4_0", ShaderFlags.None, EffectFlags.None);

            VertexShader = new VertexShader(device, vertexShaderByteCode);
            PixelShader = new PixelShader(device, pixelShaderByteCode);

            var inputElements = new InputElement[]
            {
                new InputElement
                {
                    SemanticName = "POSITION",
                    SemanticIndex = 0,
                    Format = Format.R32G32B32_Float,
                    Slot = 0,
                    AlignedByteOffset = 0,
                    Classification = InputClassification.PerVertexData,
                    InstanceDataStepRate = 0
                },
                new InputElement
                {
                    SemanticName = "COLOR",
                    SemanticIndex = 0,
                    Format = Format.R32G32B32A32_Float,
                    Slot = 0,
                    AlignedByteOffset = ColorShader.Vertex.AppendAlignedElement,
                    Classification = InputClassification.PerVertexData,
                    InstanceDataStepRate = 0
                }
            };
            Layout = new InputLayout(device, ShaderSignature.GetInputSignature(vertexShaderByteCode), inputElements);

            vertexShaderByteCode.Dispose();
            pixelShaderByteCode.Dispose();

            // Setup the description of the dynamic matrix constant buffer that is in the vertex shader.
            var matrixBufferDesc = new BufferDescription
            {
                Usage = ResourceUsage.Dynamic, // Updated each frame
                SizeInBytes = Utilities.SizeOf<MatrixBuffer>(), // Contains three matrices
                BindFlags = BindFlags.ConstantBuffer,
                CpuAccessFlags = CpuAccessFlags.Write,
                OptionFlags = ResourceOptionFlags.None,
                StructureByteStride = 0
            };
            ConstantMatrixBuffer = new Buffer(device, matrixBufferDesc);
        }