| // 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. |
| |
| #ifndef SRC_DAWN_NATIVE_PERSTAGE_H_ |
| #define SRC_DAWN_NATIVE_PERSTAGE_H_ |
| |
| #include <array> |
| |
| #include "dawn/common/Assert.h" |
| #include "dawn/common/BitSetIterator.h" |
| #include "dawn/common/Constants.h" |
| #include "dawn/native/Error.h" |
| |
| #include "dawn/native/dawn_platform.h" |
| |
| namespace dawn::native { |
| |
| enum class SingleShaderStage { Vertex, Fragment, Compute }; |
| |
| static_assert(static_cast<uint32_t>(SingleShaderStage::Vertex) < kNumStages); |
| static_assert(static_cast<uint32_t>(SingleShaderStage::Fragment) < kNumStages); |
| static_assert(static_cast<uint32_t>(SingleShaderStage::Compute) < kNumStages); |
| |
| static_assert(static_cast<uint32_t>(wgpu::ShaderStage::Vertex) == |
| (1 << static_cast<uint32_t>(SingleShaderStage::Vertex))); |
| static_assert(static_cast<uint32_t>(wgpu::ShaderStage::Fragment) == |
| (1 << static_cast<uint32_t>(SingleShaderStage::Fragment))); |
| static_assert(static_cast<uint32_t>(wgpu::ShaderStage::Compute) == |
| (1 << static_cast<uint32_t>(SingleShaderStage::Compute))); |
| |
| BitSetIterator<kNumStages, SingleShaderStage> IterateStages(wgpu::ShaderStage stages); |
| wgpu::ShaderStage StageBit(SingleShaderStage stage); |
| |
| static constexpr wgpu::ShaderStage kAllStages = |
| static_cast<wgpu::ShaderStage>((1 << kNumStages) - 1); |
| |
| template <typename T> |
| class PerStage { |
| public: |
| PerStage() = default; |
| explicit PerStage(const T& initialValue) { mData.fill(initialValue); } |
| |
| T& operator[](SingleShaderStage stage) { |
| DAWN_ASSERT(static_cast<uint32_t>(stage) < kNumStages); |
| return mData[static_cast<uint32_t>(stage)]; |
| } |
| const T& operator[](SingleShaderStage stage) const { |
| DAWN_ASSERT(static_cast<uint32_t>(stage) < kNumStages); |
| return mData[static_cast<uint32_t>(stage)]; |
| } |
| |
| T& operator[](wgpu::ShaderStage stageBit) { |
| uint32_t bit = static_cast<uint32_t>(stageBit); |
| DAWN_ASSERT(bit != 0 && IsPowerOfTwo(bit) && bit <= (1 << kNumStages)); |
| return mData[Log2(bit)]; |
| } |
| const T& operator[](wgpu::ShaderStage stageBit) const { |
| uint32_t bit = static_cast<uint32_t>(stageBit); |
| DAWN_ASSERT(bit != 0 && IsPowerOfTwo(bit) && bit <= (1 << kNumStages)); |
| return mData[Log2(bit)]; |
| } |
| |
| private: |
| std::array<T, kNumStages> mData; |
| }; |
| |
| } // namespace dawn::native |
| |
| #endif // SRC_DAWN_NATIVE_PERSTAGE_H_ |