| // 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_METAL_PIPELINELAYOUTMTL_H_ |
| #define SRC_DAWN_NATIVE_METAL_PIPELINELAYOUTMTL_H_ |
| |
| #include "dawn/common/ityp_stack_vec.h" |
| #include "dawn/native/BindingInfo.h" |
| #include "dawn/native/PipelineLayout.h" |
| |
| #include "dawn/native/PerStage.h" |
| |
| #import <Metal/Metal.h> |
| |
| namespace dawn::native::metal { |
| |
| class Device; |
| |
| // The number of Metal buffers usable by applications in general |
| static constexpr size_t kMetalBufferTableSize = 31; |
| // The Metal buffer slot that Dawn reserves for its own use to pass more data to shaders |
| static constexpr size_t kBufferLengthBufferSlot = kMetalBufferTableSize - 1; |
| // The number of Metal buffers Dawn can use in a generic way (i.e. that aren't reserved) |
| static constexpr size_t kGenericMetalBufferSlots = kMetalBufferTableSize - 1; |
| |
| static constexpr BindGroupIndex kPullingBufferBindingSet = BindGroupIndex(kMaxBindGroups); |
| |
| class PipelineLayout final : public PipelineLayoutBase { |
| public: |
| static Ref<PipelineLayout> Create(Device* device, const PipelineLayoutDescriptor* descriptor); |
| |
| using BindingIndexInfo = |
| ityp::array<BindGroupIndex, |
| ityp::stack_vec<BindingIndex, uint32_t, kMaxOptimalBindingsPerGroup>, |
| kMaxBindGroups>; |
| const BindingIndexInfo& GetBindingIndexInfo(SingleShaderStage stage) const; |
| |
| // The number of Metal vertex stage buffers used for the whole pipeline layout. |
| uint32_t GetBufferBindingCount(SingleShaderStage stage) const; |
| |
| private: |
| PipelineLayout(Device* device, const PipelineLayoutDescriptor* descriptor); |
| ~PipelineLayout() override; |
| PerStage<BindingIndexInfo> mIndexInfo; |
| PerStage<uint32_t> mBufferBindingCount; |
| }; |
| |
| } // namespace dawn::native::metal |
| |
| #endif // SRC_DAWN_NATIVE_METAL_PIPELINELAYOUTMTL_H_ |