static void ReflectShaderVertexAttributes(
ID3D12ShaderReflection* reflection,
const D3D12_SHADER_DESC& shaderDesc,
ShaderReflectionDescriptor& reflectionDesc)
{
for (UINT i = 0; i < shaderDesc.InputParameters; ++i)
{
/* Get signature parameter descriptor */
D3D12_SIGNATURE_PARAMETER_DESC paramDesc;
auto hr = reflection->GetInputParameterDesc(i, ¶mDesc);
if (FAILED(hr))
{
std::string info = "failed to retrieve D3D12 signature parameter descriptor " + std::to_string(i + 1) + " of " + std::to_string(shaderDesc.InputParameters);
DXThrowIfFailed(hr, info.c_str());
}
/* Add vertex attribute to output list */
VertexAttribute vertexAttrib;
{
vertexAttrib.name = std::string(paramDesc.SemanticName);
vertexAttrib.format = DXGetSignatureParameterType(paramDesc.ComponentType, paramDesc.Mask);
vertexAttrib.semanticIndex = paramDesc.SemanticIndex;
vertexAttrib.systemValue = DXTypes::Unmap(paramDesc.SystemValueType);
}
reflectionDesc.vertexAttributes.push_back(vertexAttrib);
}
}
void D3D12CommandQueue::Submit(Fence& fence)
{
/* Schedule signal command into the queue */
auto& fenceD3D = LLGL_CAST(D3D12Fence&, fence);
auto hr = native_->Signal(fenceD3D.GetNative(), fenceD3D.NextValue());
DXThrowIfFailed(hr, "failed to signal D3D12 fence with command queue");
}
void D3D12Shader::ReflectShaderByteCode(ShaderReflectionDescriptor& reflectionDesc) const
{
HRESULT hr = 0;
/* Get shader reflection */
ComPtr<ID3D12ShaderReflection> reflection;
hr = D3DReflect(byteCode_.data(), byteCode_.size(), IID_PPV_ARGS(reflection.ReleaseAndGetAddressOf()));
DXThrowIfFailed(hr, "failed to retrieve D3D12 shader reflection");
D3D12_SHADER_DESC shaderDesc;
hr = reflection->GetDesc(&shaderDesc);
DXThrowIfFailed(hr, "failed to retrieve D3D12 shader descriptor");
/* Get input parameter descriptors */
if (GetType() == ShaderType::Vertex)
ReflectShaderVertexAttributes(reflection.Get(), shaderDesc, reflectionDesc);
/* Get input bindings */
ReflectShaderInputBindings(reflection.Get(), shaderDesc, GetStageFlags(), reflectionDesc);
}
std::string D3D12Shader::Disassemble(int flags)
{
if (!byteCode_.empty())
{
ComPtr<ID3DBlob> disasm;
auto hr = D3DDisassemble(byteCode_.data(), byteCode_.size(), DXGetDisassemblerFlags(flags), nullptr, &disasm);
DXThrowIfFailed(hr, "failed to disassemble D3D12 shader byte code");
return DXGetBlobString(disasm.Get());
}
return "";
}
static void ReflectShaderInputBindings(
ID3D12ShaderReflection* reflection,
const D3D12_SHADER_DESC& shaderDesc,
long stageFlags,
ShaderReflectionDescriptor& reflectionDesc)
{
UINT cbufferIdx = 0;
for (UINT i = 0; i < shaderDesc.BoundResources; ++i)
{
/* Get shader input resource descriptor */
D3D12_SHADER_INPUT_BIND_DESC inputBindDesc;
auto hr = reflection->GetResourceBindingDesc(i, &inputBindDesc);
DXThrowIfFailed(hr, "failed to retrieve D3D12 shader input binding descriptor");
/* Reflect shader resource view */
switch (inputBindDesc.Type)
{
case D3D_SIT_CBUFFER:
ReflectShaderConstantBuffer(reflection, reflectionDesc, shaderDesc, inputBindDesc, stageFlags, cbufferIdx);
break;
case D3D_SIT_TBUFFER:
case D3D_SIT_TEXTURE:
ReflectShaderResourceGeneric(inputBindDesc, reflectionDesc, ResourceType::Texture, BindFlags::SampleBuffer, stageFlags);
break;
case D3D_SIT_SAMPLER:
ReflectShaderResourceGeneric(inputBindDesc, reflectionDesc, ResourceType::Sampler, 0, stageFlags);
break;
case D3D_SIT_STRUCTURED:
case D3D_SIT_BYTEADDRESS:
ReflectShaderResourceGeneric(inputBindDesc, reflectionDesc, ResourceType::Buffer, BindFlags::SampleBuffer, stageFlags);
break;
case D3D_SIT_UAV_RWTYPED:
case D3D_SIT_UAV_RWSTRUCTURED:
case D3D_SIT_UAV_RWBYTEADDRESS:
case D3D_SIT_UAV_APPEND_STRUCTURED:
case D3D_SIT_UAV_CONSUME_STRUCTURED:
case D3D_SIT_UAV_RWSTRUCTURED_WITH_COUNTER:
ReflectShaderResourceGeneric(inputBindDesc, reflectionDesc, ResourceType::Buffer, BindFlags::RWStorageBuffer, stageFlags);
break;
default:
break;
}
}
}
static void ReflectShaderConstantBuffer(
ID3D12ShaderReflection* reflection,
ShaderReflectionDescriptor& reflectionDesc,
const D3D12_SHADER_DESC& shaderDesc,
const D3D12_SHADER_INPUT_BIND_DESC& inputBindDesc,
long stageFlags,
UINT& cbufferIdx)
{
/* Initialize resource view descriptor for constant buffer */
auto resourceView = FetchOrInsertResource(reflectionDesc, inputBindDesc.Name, ResourceType::Buffer, inputBindDesc.BindPoint);
{
resourceView->bindFlags |= BindFlags::ConstantBuffer;
resourceView->stageFlags |= stageFlags;
resourceView->arraySize = inputBindDesc.BindCount;
}
/* Determine constant buffer size */
if (cbufferIdx < shaderDesc.ConstantBuffers)
{
auto cbufferReflection = reflection->GetConstantBufferByIndex(cbufferIdx++);
D3D12_SHADER_BUFFER_DESC shaderBufferDesc;
auto hr = cbufferReflection->GetDesc(&shaderBufferDesc);
DXThrowIfFailed(hr, "failed to retrieve D3D12 shader buffer descriptor");
if (shaderBufferDesc.Type == D3D_CT_CBUFFER)
{
/* Store constant buffer size in output descriptor */
resourceView->constantBufferSize = shaderBufferDesc.Size;
}
else
{
/* Type mismatch in descriptors */
throw std::runtime_error(
"failed to match D3D12 shader buffer descriptor \"" + std::string(shaderBufferDesc.Name) +
"\" with input binding descriptor for constant buffer \"" + std::string(inputBindDesc.Name) + "\""
);
}
}
else
{
/* Resource index mismatch in descriptor */
throw std::runtime_error(
"failed to find D3D12 shader buffer descriptor for input binding descriptor \"" +
std::string(inputBindDesc.Name) + "\""
);
}
}
D3D12_CPU_DESCRIPTOR_HANDLE D3D12ResourceHeap::CreateHeapTypeCbvSrvUav(ID3D12Device* device, const ResourceHeapDescriptor& desc)
{
/* Determine number of view descriptors */
UINT numDescriptors = 0;
for (const auto& resourceView : desc.resourceViews)
{
if (auto resource = resourceView.resource)
{
/* Search SRV/UAV/CBV resources */
auto resType = resource->QueryResourceType();
if (resType == ResourceType::Buffer || resType == ResourceType::Texture)
++numDescriptors;
}
else
ErrNullPointerInResource();
}
if (numDescriptors > 0)
{
/* Create descriptor heap for views (CBV, SRV, UAV) */
D3D12_DESCRIPTOR_HEAP_DESC heapDesc;
{
heapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
heapDesc.NumDescriptors = numDescriptors;
heapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
heapDesc.NodeMask = 0;
}
auto hr = device->CreateDescriptorHeap(&heapDesc, IID_PPV_ARGS(heapTypeCbvSrvUav_.ReleaseAndGetAddressOf()));
DXThrowIfFailed(hr, "failed to create D3D12 descriptor heap of type D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV");
#ifdef LLGL_DEBUG
heapTypeCbvSrvUav_->SetName(L"LLGL::D3D12ResourceHeap::heapTypeCbvSrvUav");
#endif
/* Store in array for quick access */
AppendDescriptorHeapToArray(heapTypeCbvSrvUav_.Get());
return heapTypeCbvSrvUav_->GetCPUDescriptorHandleForHeapStart();
}
return {};
}
void GBuffer::Initialize(const ComPtr<ID3D11Device1> &spD3DDevice1, D3D11_TEXTURE2D_DESC &bufferDesc){
//
// Depth Stencil
//
// Create the depth stencil render target
bufferDesc.Format = m_DepthStencilTextureFormat;
bufferDesc.BindFlags = D3D11_BIND_DEPTH_STENCIL | D3D11_BIND_SHADER_RESOURCE;
bufferDesc.MipLevels = 1;
bufferDesc.ArraySize = 1;
DXThrowIfFailed(
spD3DDevice1->CreateTexture2D(
&bufferDesc,
nullptr,
&m_spDepthStencilRT
)
);
// Create the depth stencil render target view
D3D11_DEPTH_STENCIL_VIEW_DESC depthStencilRTVDesc = {
m_DepthStencilRTVFormat,
D3D11_DSV_DIMENSION_TEXTURE2D,
0
};
DXThrowIfFailed(
spD3DDevice1->CreateDepthStencilView(
m_spDepthStencilRT.Get(),
&depthStencilRTVDesc,
&m_spDepthStencilView
)
);
// Create read only depth stencil render target view
depthStencilRTVDesc.Flags = D3D11_DSV_READ_ONLY_DEPTH | D3D11_DSV_READ_ONLY_STENCIL;
DXThrowIfFailed(
spD3DDevice1->CreateDepthStencilView(
m_spDepthStencilRT.Get(),
&depthStencilRTVDesc,
&m_spDepthStencilViewReadOnly
)
);
// Create the depth stencil shader resource view
D3D11_SHADER_RESOURCE_VIEW_DESC SRVDesc = {
m_DepthStencilSRVFormat,
D3D11_SRV_DIMENSION_TEXTURE2D,
0,
0
};
SRVDesc.Texture2D.MipLevels = 1;
DXThrowIfFailed(
spD3DDevice1->CreateShaderResourceView(
m_spDepthStencilRT.Get(),
&SRVDesc,
&m_spDepthStencilSRV
)
);
// Create the depth stencil state
D3D11_DEPTH_STENCIL_DESC depthStencilDesc;
depthStencilDesc.DepthEnable = TRUE;
depthStencilDesc.DepthWriteMask = D3D11_DEPTH_WRITE_MASK_ALL;
depthStencilDesc.DepthFunc = D3D11_COMPARISON_LESS;
depthStencilDesc.StencilEnable = TRUE;
depthStencilDesc.StencilReadMask = D3D11_DEFAULT_STENCIL_READ_MASK;
depthStencilDesc.StencilWriteMask = D3D11_DEFAULT_STENCIL_WRITE_MASK;
const D3D11_DEPTH_STENCILOP_DESC stencilMarkOp = { D3D11_STENCIL_OP_REPLACE, D3D11_STENCIL_OP_REPLACE, D3D11_STENCIL_OP_REPLACE, D3D11_COMPARISON_ALWAYS };
depthStencilDesc.FrontFace = stencilMarkOp;
depthStencilDesc.BackFace = stencilMarkOp;
DXThrowIfFailed(
spD3DDevice1->CreateDepthStencilState(&depthStencilDesc, m_spDepthStencilState.GetAddressOf())
);
// Create NoDepthWriteLessStencilMaskState
D3D11_DEPTH_STENCIL_DESC noWriteDepthStencilDesc;
noWriteDepthStencilDesc.DepthEnable = TRUE;
noWriteDepthStencilDesc.DepthWriteMask = D3D11_DEPTH_WRITE_MASK_ZERO;
noWriteDepthStencilDesc.DepthFunc = D3D11_COMPARISON_LESS;
noWriteDepthStencilDesc.StencilEnable = TRUE;
noWriteDepthStencilDesc.StencilReadMask = D3D11_DEFAULT_STENCIL_READ_MASK;
noWriteDepthStencilDesc.StencilWriteMask = D3D11_DEFAULT_STENCIL_WRITE_MASK;
const D3D11_DEPTH_STENCILOP_DESC noSkyStencilOp = { D3D11_STENCIL_OP_KEEP, D3D11_STENCIL_OP_KEEP, D3D11_STENCIL_OP_KEEP, D3D11_COMPARISON_EQUAL };
noWriteDepthStencilDesc.FrontFace = noSkyStencilOp;
noWriteDepthStencilDesc.BackFace = noSkyStencilOp;
DXThrowIfFailed(
spD3DDevice1->CreateDepthStencilState(&noWriteDepthStencilDesc, m_spNoDepthWriteLessStencilMaskState.GetAddressOf())
);
//
// Color and Specular Intensity
//
// Create the color and specular intensity render target
bufferDesc.Format = m_ColorSpecularIntensityTextureFormat;
bufferDesc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;
DXThrowIfFailed(
spD3DDevice1->CreateTexture2D(
&bufferDesc,
nullptr,
&m_spColorSpecularIntensityRT
)
);
// Create the color and specular intensity render target view
CD3D11_RENDER_TARGET_VIEW_DESC RTVDesc(
D3D11_RTV_DIMENSION_TEXTURE2D,
m_ColorSpecularIntensityRTVFormat
);
DXThrowIfFailed(
spD3DDevice1->CreateRenderTargetView(
m_spColorSpecularIntensityRT.Get(),
&RTVDesc,
&m_spColorSpecularIntensityRTV
)
);
// Create the color and specular intensity shader resource view
SRVDesc.Format = m_ColorSpecularIntensitySRVFormat;
DXThrowIfFailed(
spD3DDevice1->CreateShaderResourceView(
m_spColorSpecularIntensityRT.Get(),
&SRVDesc,
&m_spColorSpecularIntensitySRV
)
);
//
// Normal
//
// Create the normal render target
bufferDesc.Format = m_NormalTextureFormat;
DXThrowIfFailed(
spD3DDevice1->CreateTexture2D(
&bufferDesc,
nullptr,
&m_spNormalRT
)
);
// Create the normal render target view
RTVDesc.Format = m_NormalRTVFormat;
DXThrowIfFailed(
spD3DDevice1->CreateRenderTargetView(
m_spNormalRT.Get(),
&RTVDesc,
&m_spNormalRTV
)
);
// Create the normal shader resource view
SRVDesc.Format = m_NormalSRVFormat;
DXThrowIfFailed(
spD3DDevice1->CreateShaderResourceView(
m_spNormalRT.Get(),
&SRVDesc,
&m_spNormalSRV
)
);
//
// Specular Exponent
//
// Create the specular exponent render target
bufferDesc.Format = m_SpecularExponentTextureFormat;
DXThrowIfFailed(
spD3DDevice1->CreateTexture2D(
&bufferDesc,
nullptr,
&m_spPositonRT
)
);
// Create the specular exponent render target view
RTVDesc.Format = m_SpecularExponentRTVFormat;
DXThrowIfFailed(
spD3DDevice1->CreateRenderTargetView(
m_spPositonRT.Get(),
&RTVDesc,
&m_spPositionRTV
)
);
// Create the specular exponent shader resource view
SRVDesc.Format = m_SpecularExponentSRVFormat;
DXThrowIfFailed(
spD3DDevice1->CreateShaderResourceView(
m_spPositonRT.Get(),
&SRVDesc,
&m_spPositionSRV
)
);
}