internal unsafe PipelineState(GraphicsDevice graphicsDevice, PipelineStateDescription pipelineStateDescription) : base(graphicsDevice)
{
if (pipelineStateDescription.RootSignature != null)
{
var effectReflection = pipelineStateDescription.EffectBytecode.Reflection;
var computeShader = pipelineStateDescription.EffectBytecode.Stages.FirstOrDefault(e => e.Stage == ShaderStage.Compute);
IsCompute = computeShader != null;
var rootSignatureParameters = new List <RootParameter>();
var immutableSamplers = new List <StaticSamplerDescription>();
SrvBindCounts = new int[pipelineStateDescription.RootSignature.EffectDescriptorSetReflection.Layouts.Count];
SamplerBindCounts = new int[pipelineStateDescription.RootSignature.EffectDescriptorSetReflection.Layouts.Count];
for (int layoutIndex = 0; layoutIndex < pipelineStateDescription.RootSignature.EffectDescriptorSetReflection.Layouts.Count; layoutIndex++)
{
var layout = pipelineStateDescription.RootSignature.EffectDescriptorSetReflection.Layouts[layoutIndex];
if (layout.Layout == null)
{
continue;
}
// TODO D3D12 for now, we don't control register so we simply generate one resource table per shader stage and per descriptor set layout
// we should switch to a model where we make sure VS/PS don't overlap for common descriptors so that they can be shared
var srvDescriptorRanges = new Dictionary <ShaderStage, List <DescriptorRange> >();
var samplerDescriptorRanges = new Dictionary <ShaderStage, List <DescriptorRange> >();
int descriptorSrvOffset = 0;
int descriptorSamplerOffset = 0;
foreach (var item in layout.Layout.Entries)
{
var isSampler = item.Class == EffectParameterClass.Sampler;
// Find matching resource bindings
foreach (var binding in effectReflection.ResourceBindings)
{
if (binding.Stage == ShaderStage.None || binding.KeyInfo.Key != item.Key)
{
continue;
}
List <DescriptorRange> descriptorRanges;
{
var dictionary = isSampler ? samplerDescriptorRanges : srvDescriptorRanges;
if (dictionary.TryGetValue(binding.Stage, out descriptorRanges) == false)
{
descriptorRanges = dictionary[binding.Stage] = new List <DescriptorRange>();
}
}
if (isSampler)
{
if (item.ImmutableSampler != null)
{
immutableSamplers.Add(new StaticSamplerDescription(ShaderStage2ShaderVisibility(binding.Stage), binding.SlotStart, 0)
{
// TODO D3D12 ImmutableSampler should only be a state description instead of a GPU object?
Filter = (Filter)item.ImmutableSampler.Description.Filter,
ComparisonFunc = (Comparison)item.ImmutableSampler.Description.CompareFunction,
BorderColor = ColorHelper.ConvertStatic(item.ImmutableSampler.Description.BorderColor),
AddressU = (SharpDX.Direct3D12.TextureAddressMode)item.ImmutableSampler.Description.AddressU,
AddressV = (SharpDX.Direct3D12.TextureAddressMode)item.ImmutableSampler.Description.AddressV,
AddressW = (SharpDX.Direct3D12.TextureAddressMode)item.ImmutableSampler.Description.AddressW,
MinLOD = item.ImmutableSampler.Description.MinMipLevel,
MaxLOD = item.ImmutableSampler.Description.MaxMipLevel,
MipLODBias = item.ImmutableSampler.Description.MipMapLevelOfDetailBias,
MaxAnisotropy = item.ImmutableSampler.Description.MaxAnisotropy,
});
}
else
{
// Add descriptor range
descriptorRanges.Add(new DescriptorRange(DescriptorRangeType.Sampler, item.ArraySize, binding.SlotStart, 0, descriptorSamplerOffset));
}
}
else
{
DescriptorRangeType descriptorRangeType;
switch (binding.Class)
{
case EffectParameterClass.ConstantBuffer:
descriptorRangeType = DescriptorRangeType.ConstantBufferView;
break;
case EffectParameterClass.ShaderResourceView:
descriptorRangeType = DescriptorRangeType.ShaderResourceView;
break;
case EffectParameterClass.UnorderedAccessView:
descriptorRangeType = DescriptorRangeType.UnorderedAccessView;
break;
default:
throw new NotImplementedException();
}
// Add descriptor range
descriptorRanges.Add(new DescriptorRange(descriptorRangeType, item.ArraySize, binding.SlotStart, 0, descriptorSrvOffset));
}
}
// Move to next element (mirror what is done in DescriptorSetLayout)
if (isSampler)
{
if (item.ImmutableSampler == null)
{
descriptorSamplerOffset += item.ArraySize;
}
}
else
{
descriptorSrvOffset += item.ArraySize;
}
}
foreach (var stage in srvDescriptorRanges)
{
if (stage.Value.Count > 0)
{
rootSignatureParameters.Add(new RootParameter(ShaderStage2ShaderVisibility(stage.Key), stage.Value.ToArray()));
SrvBindCounts[layoutIndex]++;
}
}
foreach (var stage in samplerDescriptorRanges)
{
if (stage.Value.Count > 0)
{
rootSignatureParameters.Add(new RootParameter(ShaderStage2ShaderVisibility(stage.Key), stage.Value.ToArray()));
SamplerBindCounts[layoutIndex]++;
}
}
}
var rootSignatureDesc = new RootSignatureDescription(RootSignatureFlags.AllowInputAssemblerInputLayout, rootSignatureParameters.ToArray(), immutableSamplers.ToArray());
var rootSignature = NativeDevice.CreateRootSignature(0, rootSignatureDesc.Serialize());
InputElement[] inputElements = null;
if (pipelineStateDescription.InputElements != null)
{
inputElements = new InputElement[pipelineStateDescription.InputElements.Length];
for (int i = 0; i < inputElements.Length; ++i)
{
var inputElement = pipelineStateDescription.InputElements[i];
inputElements[i] = new InputElement
{
Format = (SharpDX.DXGI.Format)inputElement.Format,
AlignedByteOffset = inputElement.AlignedByteOffset,
SemanticName = inputElement.SemanticName,
SemanticIndex = inputElement.SemanticIndex,
Slot = inputElement.InputSlot,
Classification = (SharpDX.Direct3D12.InputClassification)inputElement.InputSlotClass,
InstanceDataStepRate = inputElement.InstanceDataStepRate,
};
}
}
PrimitiveTopologyType primitiveTopologyType;
switch (pipelineStateDescription.PrimitiveType)
{
case PrimitiveType.Undefined:
primitiveTopologyType = PrimitiveTopologyType.Undefined;
break;
case PrimitiveType.PointList:
primitiveTopologyType = PrimitiveTopologyType.Point;
break;
case PrimitiveType.LineList:
case PrimitiveType.LineStrip:
case PrimitiveType.LineListWithAdjacency:
case PrimitiveType.LineStripWithAdjacency:
primitiveTopologyType = PrimitiveTopologyType.Line;
break;
case PrimitiveType.TriangleList:
case PrimitiveType.TriangleStrip:
case PrimitiveType.TriangleListWithAdjacency:
case PrimitiveType.TriangleStripWithAdjacency:
primitiveTopologyType = PrimitiveTopologyType.Triangle;
break;
default:
if (pipelineStateDescription.PrimitiveType >= PrimitiveType.PatchList && pipelineStateDescription.PrimitiveType < PrimitiveType.PatchList + 32)
{
primitiveTopologyType = PrimitiveTopologyType.Patch;
}
else
{
throw new ArgumentOutOfRangeException("pipelineStateDescription.PrimitiveType");
}
break;
}
// Check if it should use compute pipeline state
if (IsCompute)
{
var nativePipelineStateDescription = new ComputePipelineStateDescription
{
ComputeShader = computeShader.Data,
Flags = PipelineStateFlags.None,
RootSignaturePointer = rootSignature,
};
CompiledState = NativeDevice.CreateComputePipelineState(nativePipelineStateDescription);
}
else
{
var nativePipelineStateDescription = new GraphicsPipelineStateDescription
{
InputLayout = new InputLayoutDescription(inputElements),
RootSignature = rootSignature,
RasterizerState = CreateRasterizerState(pipelineStateDescription.RasterizerState),
BlendState = CreateBlendState(pipelineStateDescription.BlendState),
SampleMask = (int)pipelineStateDescription.SampleMask,
DepthStencilFormat = (SharpDX.DXGI.Format)pipelineStateDescription.Output.DepthStencilFormat,
DepthStencilState = CreateDepthStencilState(pipelineStateDescription.DepthStencilState),
RenderTargetCount = pipelineStateDescription.Output.RenderTargetCount,
// TODO D3D12 hardcoded
StreamOutput = new StreamOutputDescription(),
PrimitiveTopologyType = primitiveTopologyType,
// TODO D3D12 hardcoded
SampleDescription = new SharpDX.DXGI.SampleDescription(1, 0),
};
// Disable depth buffer if no format specified
if (nativePipelineStateDescription.DepthStencilFormat == Format.Unknown)
nativePipelineStateDescription.DepthStencilState.IsDepthEnabled = false;
fixed(PixelFormat *renderTargetFormats = &pipelineStateDescription.Output.RenderTargetFormat0)
{
for (int i = 0; i < pipelineStateDescription.Output.RenderTargetCount; ++i)
{
nativePipelineStateDescription.RenderTargetFormats[i] = (SharpDX.DXGI.Format)renderTargetFormats[i];
}
}
foreach (var stage in pipelineStateDescription.EffectBytecode.Stages)
{
switch (stage.Stage)
{
case ShaderStage.Vertex:
nativePipelineStateDescription.VertexShader = stage.Data;
break;
case ShaderStage.Hull:
nativePipelineStateDescription.HullShader = stage.Data;
break;
case ShaderStage.Domain:
nativePipelineStateDescription.DomainShader = stage.Data;
break;
case ShaderStage.Geometry:
nativePipelineStateDescription.GeometryShader = stage.Data;
break;
case ShaderStage.Pixel:
nativePipelineStateDescription.PixelShader = stage.Data;
break;
default:
throw new ArgumentOutOfRangeException();
}
}
CompiledState = NativeDevice.CreateGraphicsPipelineState(nativePipelineStateDescription);
}
RootSignature = rootSignature;
PrimitiveTopology = (PrimitiveTopology)pipelineStateDescription.PrimitiveType;
HasScissorEnabled = pipelineStateDescription.RasterizerState.ScissorTestEnable;
}
}