| // Copyright 2023 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. |
| |
| #ifndef SRC_DAWN_NATIVE_D3D11_PIPELINELAYOUTD3D11_H_ |
| #define SRC_DAWN_NATIVE_D3D11_PIPELINELAYOUTD3D11_H_ |
| |
| #include "dawn/native/PipelineLayout.h" |
| |
| #include "dawn/common/ityp_array.h" |
| #include "dawn/common/ityp_vector.h" |
| #include "dawn/native/BindingInfo.h" |
| #include "dawn/native/d3d/d3d_platform.h" |
| |
| namespace dawn::native::d3d11 { |
| |
| class Device; |
| |
| // For D3D11, uniform buffers, samplers, sampled textures, and storage buffers are bind to |
| // different kind of slots. The number of slots for each type is limited by the D3D11 spec. |
| // So we need to pack the bindings by type into the slots tightly. UAV slots are a little |
| // different. They are assigned to storage buffers and textures decreasingly from the end, |
| // as color attachments also use them increasingly from the begin. |
| // And D3D11 uses SM 5.0 which doesn't support spaces(binding groups). so we need to flatten |
| // the binding groups into a single array. |
| class PipelineLayout final : public PipelineLayoutBase { |
| public: |
| // constant buffer slot reserved for index offsets and num workgroups. |
| static constexpr uint32_t kReservedConstantBufferSlot = |
| D3D11_COMMONSHADER_CONSTANT_BUFFER_API_SLOT_COUNT - 1; |
| static constexpr uint32_t kFirstIndexOffsetConstantBufferSlot = kReservedConstantBufferSlot; |
| static constexpr uint32_t kNumWorkgroupsConstantBufferSlot = kReservedConstantBufferSlot; |
| |
| static ResultOrError<Ref<PipelineLayout>> Create(Device* device, |
| const PipelineLayoutDescriptor* descriptor); |
| |
| using BindingIndexInfo = |
| ityp::array<BindGroupIndex, ityp::vector<BindingIndex, uint32_t>, kMaxBindGroups>; |
| const BindingIndexInfo& GetBindingIndexInfo() const; |
| |
| uint32_t GetUnusedUAVBindingCount() const { return mUnusedUAVBindingCount; } |
| uint32_t GetTotalUAVBindingCount() const { return mTotalUAVBindingCount; } |
| |
| // Get the bind groups that use one or more UAV slots. |
| const BindGroupLayoutMask& GetUAVBindGroupLayoutsMask() const; |
| |
| private: |
| using PipelineLayoutBase::PipelineLayoutBase; |
| |
| ~PipelineLayout() override = default; |
| |
| MaybeError Initialize(Device* device); |
| |
| BindingIndexInfo mIndexInfo; |
| |
| uint32_t mUnusedUAVBindingCount = 0u; |
| uint32_t mTotalUAVBindingCount = 0u; |
| BindGroupLayoutMask mUAVBindGroups = 0; |
| }; |
| |
| } // namespace dawn::native::d3d11 |
| |
| #endif // SRC_DAWN_NATIVE_D3D11_PIPELINELAYOUTD3D11_H_ |