DescriptorHeapHandle RenderPassDescriptorHeap::GetHeapHandleBlock(uint32 count)
{
uint32 newHandleID = 0;
uint32 blockEnd = mCurrentDescriptorIndex + count;
if (blockEnd < mMaxDescriptors)
{
newHandleID = mCurrentDescriptorIndex;
mCurrentDescriptorIndex = blockEnd;
}
else
{
Direct3DUtils::ThrowRuntimeError("Ran out of render pass descriptor heap handles, need to increase heap size.");
}
DescriptorHeapHandle newHandle;
D3D12_CPU_DESCRIPTOR_HANDLE cpuHandle = mDescriptorHeapCPUStart;
cpuHandle.ptr += newHandleID * mDescriptorSize;
newHandle.SetCPUHandle(cpuHandle);
D3D12_GPU_DESCRIPTOR_HANDLE gpuHandle = mDescriptorHeapGPUStart;
gpuHandle.ptr += newHandleID * mDescriptorSize;
newHandle.SetGPUHandle(gpuHandle);
newHandle.SetHeapIndex(newHandleID);
return newHandle;
}
DescriptorHeapHandle StaticDescriptorHeap::GetNewHeapHandle()
{
uint32 newHandleID = 0;
if (mCurrentDescriptorIndex < mMaxDescriptors)
{
newHandleID = mCurrentDescriptorIndex;
mCurrentDescriptorIndex++;
}
else if (mFreeDescriptors.CurrentSize() > 0)
{
newHandleID = mFreeDescriptors.RemoveLast();
}
else
{
Direct3DUtils::ThrowRuntimeError("Ran out of dynamic descriptor heap handles, need to increase heap size.");
}
DescriptorHeapHandle newHandle;
D3D12_CPU_DESCRIPTOR_HANDLE cpuHandle = mDescriptorHeapCPUStart;
cpuHandle.ptr += newHandleID * mDescriptorSize;
newHandle.SetCPUHandle(cpuHandle);
newHandle.SetHeapIndex(newHandleID);
mActiveHandleCount++;
return newHandle;
}
void Direct3DManager::BuildSwapChainDependentResources()
{
D3D12_DESCRIPTOR_HEAP_DESC desc = {};
desc.NumDescriptors = BACK_BUFFER_COUNT;
desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
for (uint32 bufferIndex = 0; bufferIndex < BACK_BUFFER_COUNT; bufferIndex++)
{
ID3D12Resource *backBufferResource = NULL;
DescriptorHeapHandle backBufferHeapHandle = mContextManager->GetHeapManager()->GetNewRTVDescriptorHeapHandle();
D3D12_RENDER_TARGET_VIEW_DESC rtvDesc;
rtvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM_SRGB;
rtvDesc.ViewDimension = D3D12_RTV_DIMENSION_TEXTURE2D;
rtvDesc.Texture2D.MipSlice = 0;
rtvDesc.Texture2D.PlaneSlice = 0;
Direct3DUtils::ThrowIfHRESULTFailed(mSwapChain->GetBuffer(bufferIndex, IID_PPV_ARGS(&backBufferResource)));
mDevice->CreateRenderTargetView(backBufferResource, &rtvDesc, backBufferHeapHandle.GetCPUHandle());
mBackBuffers.Add(new BackBufferTarget(backBufferResource, D3D12_RESOURCE_STATE_PRESENT, backBufferHeapHandle));
WCHAR name[25];
swprintf_s(name, L"Backbuffer Target %d", bufferIndex);
mBackBuffers[bufferIndex]->GetResource()->SetName(name);
}
}
void TextureManager::ProcessGeneration(GenerateTextureInfo &generationInfo, RenderPassDescriptorHeap *srvHeap)
{
ComputeContext *computeContext = mDirect3DManager->GetContextManager()->GetComputeContext();
computeContext->SetDescriptorHeap(D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV, srvHeap->GetHeap());
computeContext->SetPipelineState(generationInfo.GenerationShader);
computeContext->SetRootSignature(generationInfo.GenerationShader->GetRootSignature());
DescriptorHeapHandle generateTargetHandle = srvHeap->GetHeapHandleBlock(1);
mDirect3DManager->GetDevice()->CopyDescriptorsSimple(1, generateTargetHandle.GetCPUHandle(), generationInfo.GenerateTarget->GetUnorderedAccessViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
computeContext->SetDescriptorTable(0, generateTargetHandle.GetGPUHandle());
computeContext->Dispatch(generationInfo.GenerateTarget->GetWidth() / 8, generationInfo.GenerateTarget->GetHeight() / 8, 1);
generationInfo.GenerationFence = computeContext->Flush(mDirect3DManager->GetContextManager()->GetQueueManager());
}
void SDSMShadowManager::RenderAccumulatedShadowMap(RenderPassContext *renderPassContext, DepthStencilTarget *gbufferDepth, RenderTarget *gbufferNormals)
{
Direct3DManager *direct3DManager = mGraphicsManager->GetDirect3DManager();
GraphicsContext *graphicsContext = direct3DManager->GetContextManager()->GetGraphicsContext();
Direct3DHeapManager *heapManager = direct3DManager->GetContextManager()->GetHeapManager();
Vector2 screenSize = direct3DManager->GetScreenSize();
graphicsContext->TransitionResource(gbufferNormals, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE, false);
graphicsContext->TransitionResource(gbufferNormals, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE, false);
graphicsContext->TransitionResource(mShadowAccumulationTexture, D3D12_RESOURCE_STATE_RENDER_TARGET, true);
graphicsContext->SetViewport(direct3DManager->GetScreenViewport());
graphicsContext->SetScissorRect(0, 0, (uint32)screenSize.X, (uint32)screenSize.Y);
DescriptorHeapHandle shadowSRVHandle = renderPassContext->GetCBVSRVHeap()->GetHeapHandleBlock(7);
DescriptorHeapHandle shadowSamplersHandle = renderPassContext->GetSamplerHeap()->GetHeapHandleBlock(1);
DescriptorHeapHandle shadowCBVHandle = renderPassContext->GetCBVSRVHeap()->GetHeapHandleBlock(1);
D3D12_CPU_DESCRIPTOR_HANDLE shadowSRVHandleOffset = shadowSRVHandle.GetCPUHandle();
uint32 srvHandleOffsetIncrement = renderPassContext->GetCBVSRVHeap()->GetDescriptorSize();
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowSRVHandleOffset, gbufferNormals->GetShaderResourceViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
shadowSRVHandleOffset.ptr += srvHandleOffsetIncrement;
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowSRVHandleOffset, gbufferDepth->GetShaderResourceViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
shadowSRVHandleOffset.ptr += srvHandleOffsetIncrement;
for (uint32 i = 0; i < SDSM_SHADOW_PARTITION_COUNT; i++)
{
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowSRVHandleOffset, mShadowEVSMTextures[i]->GetShaderResourceViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
shadowSRVHandleOffset.ptr += srvHandleOffsetIncrement;
}
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowSRVHandleOffset, mShadowPartitionBuffer->GetShaderResourceViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
Sampler *shadowSampler = mGraphicsManager->GetSamplerManager()->GetSampler(SAMPLER_DEFAULT_ANISO_16_CLAMP);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowSamplersHandle.GetCPUHandle(), shadowSampler->GetSamplerHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_SAMPLER);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowCBVHandle.GetCPUHandle(), mSDSMAccumulationBuffers[direct3DManager->GetFrameIndex()]->GetConstantBufferViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
graphicsContext->SetRenderTarget(mShadowAccumulationTexture->GetRenderTargetViewHandle().GetCPUHandle());
graphicsContext->SetPipelineState(mSDSMAccumulationShader);
graphicsContext->SetRootSignature(mSDSMAccumulationShader->GetRootSignature(), NULL);
graphicsContext->SetGraphicsDescriptorTable(0, shadowSRVHandle.GetGPUHandle());
graphicsContext->SetGraphicsDescriptorTable(1, shadowSamplersHandle.GetGPUHandle());
graphicsContext->SetGraphicsDescriptorTable(2, shadowCBVHandle.GetGPUHandle());
graphicsContext->DrawFullScreenTriangle();
}
void SDSMShadowManager::GenerateMipsForShadowMap(uint32 partitionIndex, RenderPassContext *renderPassContext)
{
Direct3DManager *direct3DManager = mGraphicsManager->GetDirect3DManager();
GraphicsContext *graphicsContext = direct3DManager->GetContextManager()->GetGraphicsContext();
graphicsContext->TransitionResourceExplicit(mShadowEVSMTextures[partitionIndex], D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE, 0, false, true);
graphicsContext->SetPipelineState(mGenerateMipShader);
graphicsContext->SetRootSignature(NULL, mGenerateMipShader->GetRootSignature());
DescriptorHeapHandle evsmTargetHandle = renderPassContext->GetCBVSRVHeap()->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, evsmTargetHandle.GetCPUHandle(), mShadowEVSMTextures[partitionIndex]->GetShaderResourceViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
Sampler *mipSampler = mGraphicsManager->GetSamplerManager()->GetSampler(SAMPLER_DEFAULT_LINEAR_CLAMP);
DescriptorHeapHandle samplerHandle = renderPassContext->GetSamplerHeap()->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, samplerHandle.GetCPUHandle(), mipSampler->GetSamplerHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_SAMPLER);
graphicsContext->SetComputeDescriptorTable(2, samplerHandle.GetGPUHandle());
graphicsContext->SetComputeDescriptorTable(3, evsmTargetHandle.GetGPUHandle());
uint32 mipTextureSize = mShadowPreferences.ShadowTextureSize;
for (uint32 i = 1; i < mShadowPreferences.ShadowTextureMipLevels; i++)
{
graphicsContext->TransitionResourceExplicit(mShadowEVSMTextures[partitionIndex], D3D12_RESOURCE_STATE_RENDER_TARGET, D3D12_RESOURCE_STATE_UNORDERED_ACCESS, i, false, true);
DescriptorHeapHandle mipTargetHandle = renderPassContext->GetCBVSRVHeap()->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, mipTargetHandle.GetCPUHandle(), mShadowEVSMTextures[partitionIndex]->GetUnorderedAccessViewHandle(i).GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
mipTextureSize = mipTextureSize >> 1;
float mipTexelSize = 1.0f / (float)mipTextureSize;
Vector3 mipConstants = Vector3(mipTexelSize, mipTexelSize, (float)(i - 1));
graphicsContext->SetComputeDescriptorTable(0, mipTargetHandle.GetGPUHandle());
graphicsContext->SetComputeConstants(1, 3, &mipConstants);
graphicsContext->Dispatch2D(mipTextureSize, mipTextureSize, 8, 8);
graphicsContext->InsertUAVBarrier(mShadowEVSMTextures[partitionIndex], false);
graphicsContext->TransitionResourceExplicit(mShadowEVSMTextures[partitionIndex], D3D12_RESOURCE_STATE_UNORDERED_ACCESS, D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE, i, false, true);
}
for (uint32 i = 1; i < mShadowPreferences.ShadowTextureMipLevels; i++)
{
graphicsContext->TransitionResourceExplicit(mShadowEVSMTextures[partitionIndex], D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE, i, false, false);
}
graphicsContext->TransitionResourceExplicit(mShadowEVSMTextures[partitionIndex], D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE, D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE, 0, true, true);
}
void StaticDescriptorHeap::FreeHeapHandle(DescriptorHeapHandle handle)
{
mFreeDescriptors.Add(handle.GetHeapIndex());
if (mActiveHandleCount == 0)
{
Direct3DUtils::ThrowRuntimeError("Freeing heap handles when there should be none left");
}
mActiveHandleCount--;
}
void TextureManager::ProcessCubeMapFiltering(CubeMapFilterInfo &cubeMapFilterInfo, RenderPassDescriptorHeap *srvHeap, RenderPassDescriptorHeap *samplerHeap)
{
Application::Assert(cubeMapFilterInfo.CubeMapToFilter->GetIsReady());
Vector4 targets[6] =
{
Vector4(1.0f, 0.0f, 0.0f, 0.0f), // +X
Vector4(-1.0f, 0.0f, 0.0f, 0.0f), // -X
Vector4(0.0f, 1.0f, 0.0f, 0.0f), // +Y
Vector4(0.0f, -1.0f, 0.0f, 0.0f), // -Y
Vector4(0.0f, 0.0f, 1.0f, 0.0f), // +Z
Vector4(0.0f, 0.0f, -1.0f, 0.0f) // -Z
};
Vector4 ups[6] =
{
Vector4(0.0f, 1.0f, 0.0f, 0.0f), // +X
Vector4(0.0f, 1.0f, 0.0f, 0.0f), // -X
Vector4(0.0f, 0.0f, -1.0f, 0.0f), // +Y
Vector4(0.0f, 0.0f, 1.0f, 0.0f), // -Y
Vector4(0.0f, 1.0f, 0.0f, 0.0f), // +Z
Vector4(0.0f, 1.0f, 0.0f, 0.0f) // -Z
};
ComputeContext *computeContext = mDirect3DManager->GetContextManager()->GetComputeContext();
computeContext->SetDescriptorHeap(D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV, srvHeap->GetHeap());
computeContext->SetDescriptorHeap(D3D12_DESCRIPTOR_HEAP_TYPE_SAMPLER, samplerHeap->GetHeap());
computeContext->SetPipelineState(cubeMapFilterInfo.EnvironmentFilterShader);
computeContext->SetRootSignature(cubeMapFilterInfo.EnvironmentFilterShader->GetRootSignature());
DescriptorHeapHandle envMapHandle = srvHeap->GetHeapHandleBlock(1);
DescriptorHeapHandle envMapSamplerHandle = samplerHeap->GetHeapHandleBlock(1);
mDirect3DManager->GetDevice()->CopyDescriptorsSimple(1, envMapHandle.GetCPUHandle(), cubeMapFilterInfo.CubeMapToFilter->GetTextureResource()->GetShaderResourceViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
mDirect3DManager->GetDevice()->CopyDescriptorsSimple(1, envMapSamplerHandle.GetCPUHandle(), cubeMapFilterInfo.EnvironmentSampler->GetSamplerHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_SAMPLER);
computeContext->SetDescriptorTable(0, envMapHandle.GetGPUHandle());
computeContext->SetDescriptorTable(1, envMapSamplerHandle.GetGPUHandle());
EnvironmentMapFilterTextureBuffer filterInfo;
filterInfo.mipCount = (float)cubeMapFilterInfo.NumMips;
for (uint32 cubeSideIndex = 0; cubeSideIndex < 6; cubeSideIndex++)
{
filterInfo.forwardDir = targets[cubeSideIndex];
filterInfo.upDir = ups[cubeSideIndex];
filterInfo.sourceDimensions = Vector2((float)cubeMapFilterInfo.DimensionSize, (float)cubeMapFilterInfo.DimensionSize);
for (uint32 mipIndex = 0; mipIndex < cubeMapFilterInfo.NumMips; mipIndex++)
{
filterInfo.mipLevel = (float)(cubeMapFilterInfo.NumMips - mipIndex);
DescriptorHeapHandle filterTargetHandle = srvHeap->GetHeapHandleBlock(1);
mDirect3DManager->GetDevice()->CopyDescriptorsSimple(1, filterTargetHandle.GetCPUHandle(), cubeMapFilterInfo.FilterTarget->GetUnorderedAccessViewHandle(mipIndex, cubeSideIndex).GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
computeContext->SetDescriptorTable(2, filterTargetHandle.GetGPUHandle());
computeContext->SetConstants(3, 12, &filterInfo);
computeContext->Dispatch((uint32)filterInfo.sourceDimensions.X / 8, (uint32)filterInfo.sourceDimensions.Y / 8, 1);
filterInfo.sourceDimensions = Vector2(filterInfo.sourceDimensions.X / 2, filterInfo.sourceDimensions.Y / 2);
}
}
cubeMapFilterInfo.FilterTarget->SetComputeFence(computeContext->Flush(mDirect3DManager->GetContextManager()->GetQueueManager()));
}
void SDSMShadowManager::RenderShadowMapPartitions(const D3DXMATRIX &lightViewProjMatrix, DynamicArray<SceneEntity*> &shadowEntities, DepthStencilTarget *gbufferDepth, RenderTarget *gbufferNormals)
{
Direct3DManager *direct3DManager = mGraphicsManager->GetDirect3DManager();
GraphicsContext *graphicsContext = direct3DManager->GetContextManager()->GetGraphicsContext();
Direct3DHeapManager *heapManager = direct3DManager->GetContextManager()->GetHeapManager();
Direct3DQueueManager *queueManager = direct3DManager->GetContextManager()->GetQueueManager();
//TDA: * mShadowPreferences.PartitionCount <--- is only for testing. Can just fill those cbv descs on the first partition and then reuse them
uint32 numCBVSRVDescsShadowMap = shadowEntities.CurrentSize() * mShadowPreferences.PartitionCount + mShadowPreferences.PartitionCount + 1; //1 cbv per entity + X partition cbvs + 1 partition srv
uint32 numCBVSRVDescsEVSM = 1;
uint32 numCBVSRVDescsMips = 1 + mShadowPreferences.ShadowTextureMipLevels;
RenderPassDescriptorHeap *shadowSRVDescHeap = heapManager->GetRenderPassDescriptorHeapFor(RenderPassDescriptorHeapType_ShadowRender, D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV, direct3DManager->GetFrameIndex(), numCBVSRVDescsShadowMap + numCBVSRVDescsEVSM + numCBVSRVDescsMips);
RenderPassDescriptorHeap *shadowSamplerDescHeap = heapManager->GetRenderPassDescriptorHeapFor(RenderPassDescriptorHeapType_ShadowRender, D3D12_DESCRIPTOR_HEAP_TYPE_SAMPLER, direct3DManager->GetFrameIndex(), 1);
graphicsContext->InsertPixBeginEvent(0xFF00FF00, "Shadow Render");
graphicsContext->TransitionResource(mShadowPartitionBuffer, D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE | D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE, true);
graphicsContext->SetDescriptorHeap(D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV, shadowSRVDescHeap->GetHeap());
graphicsContext->SetDescriptorHeap(D3D12_DESCRIPTOR_HEAP_TYPE_SAMPLER, shadowSamplerDescHeap->GetHeap());
graphicsContext->SetViewport(mShadowMapViewport);
graphicsContext->SetScissorRect(0, 0, mShadowPreferences.ShadowTextureSize, mShadowPreferences.ShadowTextureSize);
DescriptorHeapHandle shadowParitionReadBuffer = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowParitionReadBuffer.GetCPUHandle(), mShadowPartitionBuffer->GetShaderResourceViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
DescriptorHeapHandle shadowMapDepthHandle = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowMapDepthHandle.GetCPUHandle(), mShadowDepthTarget->GetShaderResourceViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
DynamicArray<MaterialTextureType> noTexturesForThisPass;
RenderPassContext shadowPassContext(graphicsContext, shadowSRVDescHeap, shadowSamplerDescHeap, noTexturesForThisPass, direct3DManager->GetFrameIndex());
for (uint32 i = 0; i < SDSM_SHADOW_PARTITION_COUNT; i++)
{
DescriptorHeapHandle perPassParitionBuffer = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, perPassParitionBuffer.GetCPUHandle(), mPartitionIndexBuffers[i]->GetConstantBufferViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
graphicsContext->SetPipelineState(mShadowMapShader);
graphicsContext->SetRootSignature(mShadowMapShader->GetRootSignature(), NULL);
graphicsContext->SetGraphicsDescriptorTable(1, perPassParitionBuffer.GetGPUHandle());
graphicsContext->SetGraphicsDescriptorTable(2, shadowParitionReadBuffer.GetGPUHandle());
RenderShadowDepth(i, &shadowPassContext, lightViewProjMatrix, shadowEntities);
graphicsContext->SetPipelineState(mShadowMapEVSMShader);
graphicsContext->SetRootSignature(mShadowMapEVSMShader->GetRootSignature(), NULL);
graphicsContext->SetGraphicsDescriptorTable(0, perPassParitionBuffer.GetGPUHandle());
graphicsContext->SetGraphicsDescriptorTable(1, shadowMapDepthHandle.GetGPUHandle());
graphicsContext->SetGraphicsDescriptorTable(2, shadowParitionReadBuffer.GetGPUHandle());
ConvertToEVSM(i);
if (mShadowPreferences.UseSoftShadows)
{
ApplyBlur();
}
GenerateMipsForShadowMap(i, &shadowPassContext);
graphicsContext->TransitionResource(mShadowEVSMTextures[i], D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE, true);
}
RenderAccumulatedShadowMap(&shadowPassContext, gbufferDepth, gbufferNormals);
graphicsContext->InsertPixEndEvent();
}
void SDSMShadowManager::ComputeShadowPartitions(Camera *camera, D3DXMATRIX &lightViewMatrix, D3DXMATRIX &lightProjectionMatrix, DepthStencilTarget *depthStencil)
{
Direct3DManager *direct3DManager = mGraphicsManager->GetDirect3DManager();
Camera::CameraScreenSettings cameraSettings = camera->GetScreenSettings();
const float maxFloat = FLT_MAX;
Vector3 maxPartitionScale(maxFloat, maxFloat, maxFloat);
mBlurSizeInLightSpace = Vector2(0.0f, 0.0f);
if (mShadowPreferences.UseSoftShadows)
{
mBlurSizeInLightSpace.X = mShadowPreferences.SofteningAmount * 0.5f * lightProjectionMatrix._11;
mBlurSizeInLightSpace.Y = mShadowPreferences.SofteningAmount * 0.5f * lightProjectionMatrix._22;
float maxBlurLightSpace = mShadowPreferences.MaxSofteningFilter / ((float)mShadowPreferences.ShadowTextureSize);
maxPartitionScale.X = maxBlurLightSpace / mBlurSizeInLightSpace.X;
maxPartitionScale.Y = maxBlurLightSpace / mBlurSizeInLightSpace.Y;
}
Vector3 partitionBorderLightSpace(mBlurSizeInLightSpace.X, mBlurSizeInLightSpace.Y, 1.0f);
partitionBorderLightSpace.Z *= lightProjectionMatrix._33;
D3DXMATRIX cameraViewInvMatrix;
D3DXMATRIX cameraViewMatrix = camera->GetViewMatrix();
D3DXMatrixInverse(&cameraViewInvMatrix, NULL, &cameraViewMatrix);
D3DXMATRIX lightViewProjMatrix = lightViewMatrix * lightProjectionMatrix;
mCurrentSDSMBuffer.cameraProjMatrix = camera->GetReverseProjectionMatrix();
mCurrentSDSMBuffer.cameraViewToLightProjMatrix = cameraViewInvMatrix * lightViewProjMatrix;
mCurrentSDSMBuffer.lightSpaceBorder = Vector4(partitionBorderLightSpace.X, partitionBorderLightSpace.Y, partitionBorderLightSpace.Z, 0.0f);
mCurrentSDSMBuffer.maxScale = Vector4(maxPartitionScale.X, maxPartitionScale.Y, maxPartitionScale.Z, 0.0f);
mCurrentSDSMBuffer.bufferDimensions = direct3DManager->GetScreenSize();
mCurrentSDSMBuffer.cameraNearFar = Vector2(cameraSettings.Near, cameraSettings.Far);
mCurrentSDSMBuffer.dilationFactor = 0.01f;
mCurrentSDSMBuffer.reduceTileDim = 64;
D3DXMatrixTranspose(&mCurrentSDSMBuffer.cameraProjMatrix, &mCurrentSDSMBuffer.cameraProjMatrix);
D3DXMatrixTranspose(&mCurrentSDSMBuffer.cameraViewToLightProjMatrix, &mCurrentSDSMBuffer.cameraViewToLightProjMatrix);
mCurrentAccumulationBuffer.projectionMatrix = mCurrentSDSMBuffer.cameraProjMatrix;
mCurrentAccumulationBuffer.viewToLightProjMatrix = mCurrentSDSMBuffer.cameraViewToLightProjMatrix;
mCurrentAccumulationBuffer.bufferDimensions = direct3DManager->GetScreenSize();
mSDSMBuffers[direct3DManager->GetFrameIndex()]->SetConstantBufferData(&mCurrentSDSMBuffer, sizeof(SDSMBuffer));
mSDSMAccumulationBuffers[direct3DManager->GetFrameIndex()]->SetConstantBufferData(&mCurrentAccumulationBuffer, sizeof(SDSMAccumulationBuffer));
uint32 shadowNumSRVDescs = 1;
Direct3DHeapManager *heapManager = direct3DManager->GetContextManager()->GetHeapManager();
RenderPassDescriptorHeap *shadowSRVDescHeap = heapManager->GetRenderPassDescriptorHeapFor(RenderPassDescriptorHeapType_ShadowCompute, D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV, direct3DManager->GetFrameIndex(), shadowNumSRVDescs);
GraphicsContext *graphicsContext = direct3DManager->GetContextManager()->GetGraphicsContext();
graphicsContext->InsertPixBeginEvent(0xFF00FF00, "Shadow Compute");
graphicsContext->SetDescriptorHeap(D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV, shadowSRVDescHeap->GetHeap());
////// Clear partitions
graphicsContext->TransitionResource(mShadowPartitionBuffer, D3D12_RESOURCE_STATE_UNORDERED_ACCESS, false);
graphicsContext->TransitionResource(mShadowPartitionBoundsBuffer, D3D12_RESOURCE_STATE_UNORDERED_ACCESS, true);
DescriptorHeapHandle shadowPartitionUAVHandle = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowPartitionUAVHandle.GetCPUHandle(), mShadowPartitionBuffer->GetUnorderedAccessViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
graphicsContext->SetPipelineState(mClearShadowPartitionsShader);
graphicsContext->SetRootSignature(NULL, mClearShadowPartitionsShader->GetRootSignature());
graphicsContext->SetComputeDescriptorTable(0, shadowPartitionUAVHandle.GetGPUHandle());
graphicsContext->Dispatch(1, 1, 1);
////// Clear Partition Bounds
DescriptorHeapHandle shadowPartitionBoundsUAVHandle = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowPartitionBoundsUAVHandle.GetCPUHandle(), mShadowPartitionBoundsBuffer->GetUnorderedAccessViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
graphicsContext->SetPipelineState(mClearShadowPartitionBoundsShader);
graphicsContext->SetRootSignature(NULL, mClearShadowPartitionBoundsShader->GetRootSignature());
graphicsContext->SetComputeDescriptorTable(0, shadowPartitionBoundsUAVHandle.GetGPUHandle());
graphicsContext->Dispatch(1, 1, 1);
graphicsContext->TransitionResource(mShadowPartitionBuffer, D3D12_RESOURCE_STATE_UNORDERED_ACCESS, false); //force UAV barrier
graphicsContext->TransitionResource(mShadowPartitionBoundsBuffer, D3D12_RESOURCE_STATE_UNORDERED_ACCESS, true);
/////// Calculate depth buffer bounds
shadowPartitionUAVHandle = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowPartitionUAVHandle.GetCPUHandle(), mShadowPartitionBuffer->GetUnorderedAccessViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
DescriptorHeapHandle shadowPartitionSRVHandle = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowPartitionSRVHandle.GetCPUHandle(), depthStencil->GetShaderResourceViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
DescriptorHeapHandle shadowPartitionCBVHandle = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowPartitionCBVHandle.GetCPUHandle(), mSDSMBuffers[direct3DManager->GetFrameIndex()]->GetConstantBufferViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
graphicsContext->SetPipelineState(mCalculateDepthBufferBoundsShader);
graphicsContext->SetRootSignature(NULL, mCalculateDepthBufferBoundsShader->GetRootSignature());
graphicsContext->SetComputeDescriptorTable(0, shadowPartitionUAVHandle.GetGPUHandle());
graphicsContext->SetComputeDescriptorTable(1, shadowPartitionSRVHandle.GetGPUHandle());
graphicsContext->SetComputeDescriptorTable(2, shadowPartitionCBVHandle.GetGPUHandle());
graphicsContext->Dispatch2D((uint32)direct3DManager->GetScreenSize().X, (uint32)direct3DManager->GetScreenSize().Y, mCurrentSDSMBuffer.reduceTileDim, mCurrentSDSMBuffer.reduceTileDim);
////// Get Partitions From Depth Bounds
graphicsContext->TransitionResource(mShadowPartitionBuffer, D3D12_RESOURCE_STATE_UNORDERED_ACCESS, true);
shadowPartitionUAVHandle = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowPartitionUAVHandle.GetCPUHandle(), mShadowPartitionBuffer->GetUnorderedAccessViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
shadowPartitionCBVHandle = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowPartitionCBVHandle.GetCPUHandle(), mSDSMBuffers[direct3DManager->GetFrameIndex()]->GetConstantBufferViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
graphicsContext->SetPipelineState(mCalculateLogPartitionsFromDepthBoundsShader);
graphicsContext->SetRootSignature(NULL, mCalculateLogPartitionsFromDepthBoundsShader->GetRootSignature());
graphicsContext->SetComputeDescriptorTable(0, shadowPartitionUAVHandle.GetGPUHandle());
graphicsContext->SetComputeDescriptorTable(1, shadowPartitionCBVHandle.GetGPUHandle());
graphicsContext->Dispatch(1, 1, 1);
////// Get Partition Bounds Range From Partitions
graphicsContext->TransitionResource(mShadowPartitionBuffer, D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE, true);
shadowPartitionBoundsUAVHandle = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowPartitionBoundsUAVHandle.GetCPUHandle(), mShadowPartitionBoundsBuffer->GetUnorderedAccessViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
shadowPartitionSRVHandle = shadowSRVDescHeap->GetHeapHandleBlock(2);
D3D12_CPU_DESCRIPTOR_HANDLE currentTextureHandle = shadowPartitionSRVHandle.GetCPUHandle();
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, currentTextureHandle, depthStencil->GetShaderResourceViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
currentTextureHandle.ptr += shadowSRVDescHeap->GetDescriptorSize();
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, currentTextureHandle, mShadowPartitionBuffer->GetShaderResourceViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
shadowPartitionCBVHandle = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowPartitionCBVHandle.GetCPUHandle(), mSDSMBuffers[direct3DManager->GetFrameIndex()]->GetConstantBufferViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
graphicsContext->SetPipelineState(mCalculatePartitionBoundsShader);
graphicsContext->SetRootSignature(NULL, mCalculatePartitionBoundsShader->GetRootSignature());
graphicsContext->SetComputeDescriptorTable(0, shadowPartitionBoundsUAVHandle.GetGPUHandle());
graphicsContext->SetComputeDescriptorTable(1, shadowPartitionSRVHandle.GetGPUHandle());
graphicsContext->SetComputeDescriptorTable(2, shadowPartitionCBVHandle.GetGPUHandle());
graphicsContext->Dispatch2D((uint32)direct3DManager->GetScreenSize().X, (uint32)direct3DManager->GetScreenSize().Y, mCurrentSDSMBuffer.reduceTileDim, mCurrentSDSMBuffer.reduceTileDim);
////// Finalize Partition Bounds
graphicsContext->TransitionResource(mShadowPartitionBuffer, D3D12_RESOURCE_STATE_UNORDERED_ACCESS, false);
graphicsContext->TransitionResource(mShadowPartitionBoundsBuffer, D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE, true);
shadowPartitionUAVHandle = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowPartitionUAVHandle.GetCPUHandle(), mShadowPartitionBuffer->GetUnorderedAccessViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
shadowPartitionSRVHandle = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowPartitionSRVHandle.GetCPUHandle(), mShadowPartitionBoundsBuffer->GetShaderResourceViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
shadowPartitionCBVHandle = shadowSRVDescHeap->GetHeapHandleBlock(1);
direct3DManager->GetDevice()->CopyDescriptorsSimple(1, shadowPartitionCBVHandle.GetCPUHandle(), mSDSMBuffers[direct3DManager->GetFrameIndex()]->GetConstantBufferViewHandle().GetCPUHandle(), D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
graphicsContext->SetPipelineState(mFinalizePartitionsShader);
graphicsContext->SetRootSignature(NULL, mFinalizePartitionsShader->GetRootSignature());
graphicsContext->SetComputeDescriptorTable(0, shadowPartitionUAVHandle.GetGPUHandle());
graphicsContext->SetComputeDescriptorTable(1, shadowPartitionSRVHandle.GetGPUHandle());
graphicsContext->SetComputeDescriptorTable(2, shadowPartitionCBVHandle.GetGPUHandle());
graphicsContext->Dispatch(1, 1, 1);
graphicsContext->InsertPixEndEvent();
}