| // Copyright 2017 The Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "dawn_native/d3d12/BindGroupLayoutD3D12.h" |
| |
| #include "common/BitSetIterator.h" |
| #include "dawn_native/d3d12/BindGroupD3D12.h" |
| #include "dawn_native/d3d12/DeviceD3D12.h" |
| #include "dawn_native/d3d12/SamplerHeapCacheD3D12.h" |
| #include "dawn_native/d3d12/StagingDescriptorAllocatorD3D12.h" |
| |
| namespace dawn_native { namespace d3d12 { |
| namespace { |
| D3D12_DESCRIPTOR_RANGE_TYPE WGPUBindingInfoToDescriptorRangeType( |
| const BindingInfo& bindingInfo) { |
| switch (bindingInfo.bindingType) { |
| case BindingInfoType::Buffer: |
| switch (bindingInfo.buffer.type) { |
| case wgpu::BufferBindingType::Uniform: |
| return D3D12_DESCRIPTOR_RANGE_TYPE_CBV; |
| case wgpu::BufferBindingType::Storage: |
| case kInternalStorageBufferBinding: |
| return D3D12_DESCRIPTOR_RANGE_TYPE_UAV; |
| case wgpu::BufferBindingType::ReadOnlyStorage: |
| return D3D12_DESCRIPTOR_RANGE_TYPE_SRV; |
| case wgpu::BufferBindingType::Undefined: |
| UNREACHABLE(); |
| } |
| |
| case BindingInfoType::Sampler: |
| return D3D12_DESCRIPTOR_RANGE_TYPE_SAMPLER; |
| |
| case BindingInfoType::Texture: |
| case BindingInfoType::ExternalTexture: |
| return D3D12_DESCRIPTOR_RANGE_TYPE_SRV; |
| |
| case BindingInfoType::StorageTexture: |
| switch (bindingInfo.storageTexture.access) { |
| case wgpu::StorageTextureAccess::ReadOnly: |
| return D3D12_DESCRIPTOR_RANGE_TYPE_SRV; |
| case wgpu::StorageTextureAccess::WriteOnly: |
| return D3D12_DESCRIPTOR_RANGE_TYPE_UAV; |
| case wgpu::StorageTextureAccess::Undefined: |
| UNREACHABLE(); |
| } |
| } |
| } |
| } // anonymous namespace |
| |
| // static |
| Ref<BindGroupLayout> BindGroupLayout::Create( |
| Device* device, |
| const BindGroupLayoutDescriptor* descriptor, |
| PipelineCompatibilityToken pipelineCompatibilityToken) { |
| return AcquireRef(new BindGroupLayout(device, descriptor, pipelineCompatibilityToken)); |
| } |
| |
| BindGroupLayout::BindGroupLayout(Device* device, |
| const BindGroupLayoutDescriptor* descriptor, |
| PipelineCompatibilityToken pipelineCompatibilityToken) |
| : BindGroupLayoutBase(device, descriptor, pipelineCompatibilityToken), |
| mDescriptorHeapOffsets(GetBindingCount()), |
| mShaderRegisters(GetBindingCount()), |
| mCbvUavSrvDescriptorCount(0), |
| mSamplerDescriptorCount(0), |
| mBindGroupAllocator(MakeFrontendBindGroupAllocator<BindGroup>(4096)) { |
| for (BindingIndex bindingIndex{0}; bindingIndex < GetBindingCount(); ++bindingIndex) { |
| const BindingInfo& bindingInfo = GetBindingInfo(bindingIndex); |
| |
| D3D12_DESCRIPTOR_RANGE_TYPE descriptorRangeType = |
| WGPUBindingInfoToDescriptorRangeType(bindingInfo); |
| |
| // TODO(dawn:728) In the future, special handling will be needed for external textures |
| // here because they encompass multiple views. |
| mShaderRegisters[bindingIndex] = uint32_t(bindingInfo.binding); |
| |
| if (bindingIndex < GetDynamicBufferCount()) { |
| continue; |
| } |
| |
| // For dynamic resources, Dawn uses root descriptor in D3D12 backend. So there is no |
| // need to allocate the descriptor from descriptor heap or create descriptor ranges. |
| ASSERT(!bindingInfo.buffer.hasDynamicOffset); |
| |
| // TODO(dawn:728) In the future, special handling will be needed for external textures |
| // here because they encompass multiple views. |
| mDescriptorHeapOffsets[bindingIndex] = |
| descriptorRangeType == D3D12_DESCRIPTOR_RANGE_TYPE_SAMPLER |
| ? mSamplerDescriptorCount++ |
| : mCbvUavSrvDescriptorCount++; |
| |
| D3D12_DESCRIPTOR_RANGE range; |
| range.RangeType = descriptorRangeType; |
| range.NumDescriptors = 1; |
| range.BaseShaderRegister = GetShaderRegister(bindingIndex); |
| range.RegisterSpace = kRegisterSpacePlaceholder; |
| range.OffsetInDescriptorsFromTableStart = D3D12_DESCRIPTOR_RANGE_OFFSET_APPEND; |
| |
| std::vector<D3D12_DESCRIPTOR_RANGE>& descriptorRanges = |
| descriptorRangeType == D3D12_DESCRIPTOR_RANGE_TYPE_SAMPLER |
| ? mSamplerDescriptorRanges |
| : mCbvUavSrvDescriptorRanges; |
| |
| // Try to join this range with the previous one, if the current range is a continuation |
| // of the previous. This is possible because the binding infos in the base type are |
| // sorted. |
| if (descriptorRanges.size() >= 2) { |
| D3D12_DESCRIPTOR_RANGE& previous = descriptorRanges.back(); |
| if (previous.RangeType == range.RangeType && |
| previous.BaseShaderRegister + previous.NumDescriptors == |
| range.BaseShaderRegister) { |
| previous.NumDescriptors += range.NumDescriptors; |
| continue; |
| } |
| } |
| |
| descriptorRanges.push_back(range); |
| } |
| |
| mViewAllocator = device->GetViewStagingDescriptorAllocator(GetCbvUavSrvDescriptorCount()); |
| mSamplerAllocator = |
| device->GetSamplerStagingDescriptorAllocator(GetSamplerDescriptorCount()); |
| } |
| |
| ResultOrError<Ref<BindGroup>> BindGroupLayout::AllocateBindGroup( |
| Device* device, |
| const BindGroupDescriptor* descriptor) { |
| uint32_t viewSizeIncrement = 0; |
| CPUDescriptorHeapAllocation viewAllocation; |
| if (GetCbvUavSrvDescriptorCount() > 0) { |
| DAWN_TRY_ASSIGN(viewAllocation, mViewAllocator->AllocateCPUDescriptors()); |
| viewSizeIncrement = mViewAllocator->GetSizeIncrement(); |
| } |
| |
| Ref<BindGroup> bindGroup = AcquireRef<BindGroup>( |
| mBindGroupAllocator.Allocate(device, descriptor, viewSizeIncrement, viewAllocation)); |
| |
| if (GetSamplerDescriptorCount() > 0) { |
| Ref<SamplerHeapCacheEntry> samplerHeapCacheEntry; |
| DAWN_TRY_ASSIGN(samplerHeapCacheEntry, device->GetSamplerHeapCache()->GetOrCreate( |
| bindGroup.Get(), mSamplerAllocator)); |
| bindGroup->SetSamplerAllocationEntry(std::move(samplerHeapCacheEntry)); |
| } |
| |
| return bindGroup; |
| } |
| |
| void BindGroupLayout::DeallocateBindGroup(BindGroup* bindGroup, |
| CPUDescriptorHeapAllocation* viewAllocation) { |
| if (viewAllocation->IsValid()) { |
| mViewAllocator->Deallocate(viewAllocation); |
| } |
| |
| mBindGroupAllocator.Deallocate(bindGroup); |
| } |
| |
| ityp::span<BindingIndex, const uint32_t> BindGroupLayout::GetDescriptorHeapOffsets() const { |
| return {mDescriptorHeapOffsets.data(), mDescriptorHeapOffsets.size()}; |
| } |
| |
| uint32_t BindGroupLayout::GetShaderRegister(BindingIndex bindingIndex) const { |
| return mShaderRegisters[bindingIndex]; |
| } |
| |
| uint32_t BindGroupLayout::GetCbvUavSrvDescriptorCount() const { |
| return mCbvUavSrvDescriptorCount; |
| } |
| |
| uint32_t BindGroupLayout::GetSamplerDescriptorCount() const { |
| return mSamplerDescriptorCount; |
| } |
| |
| const std::vector<D3D12_DESCRIPTOR_RANGE>& BindGroupLayout::GetCbvUavSrvDescriptorRanges() |
| const { |
| return mCbvUavSrvDescriptorRanges; |
| } |
| |
| const std::vector<D3D12_DESCRIPTOR_RANGE>& BindGroupLayout::GetSamplerDescriptorRanges() const { |
| return mSamplerDescriptorRanges; |
| } |
| |
| }} // namespace dawn_native::d3d12 |