| // Copyright 2020 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_D3D12_CPUDESCRIPTORHEAPALLOCATIOND3D12_H_ |
| #define SRC_DAWN_NATIVE_D3D12_CPUDESCRIPTORHEAPALLOCATIOND3D12_H_ |
| |
| #include <cstdint> |
| |
| #include "dawn/native/d3d12/d3d12_platform.h" |
| |
| namespace dawn::native::d3d12 { |
| |
| // Wrapper for a handle into a CPU-only descriptor heap. |
| class CPUDescriptorHeapAllocation { |
| public: |
| CPUDescriptorHeapAllocation() = default; |
| CPUDescriptorHeapAllocation(D3D12_CPU_DESCRIPTOR_HANDLE baseDescriptor, uint32_t heapIndex); |
| |
| D3D12_CPU_DESCRIPTOR_HANDLE GetBaseDescriptor() const; |
| |
| D3D12_CPU_DESCRIPTOR_HANDLE OffsetFrom(uint32_t sizeIncrementInBytes, |
| uint32_t offsetInDescriptorCount) const; |
| uint32_t GetHeapIndex() const; |
| |
| bool IsValid() const; |
| |
| void Invalidate(); |
| |
| private: |
| D3D12_CPU_DESCRIPTOR_HANDLE mBaseDescriptor = {0}; |
| uint32_t mHeapIndex = -1; |
| }; |
| |
| } // namespace dawn::native::d3d12 |
| |
| #endif // SRC_DAWN_NATIVE_D3D12_CPUDESCRIPTORHEAPALLOCATIOND3D12_H_ |