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// 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 DAWNNATIVE_PIPELINE_H_
#define DAWNNATIVE_PIPELINE_H_
#include "dawn_native/CachedObject.h"
#include "dawn_native/Forward.h"
#include "dawn_native/ObjectBase.h"
#include "dawn_native/PerStage.h"
#include "dawn_native/PipelineLayout.h"
#include "dawn_native/ShaderModule.h"
#include "dawn_native/dawn_platform.h"
#include <array>
#include <bitset>
namespace dawn_native {
MaybeError ValidateProgrammableStage(DeviceBase* device,
const ShaderModuleBase* module,
const std::string& entryPoint,
uint32_t constantCount,
const ConstantEntry* constants,
const PipelineLayoutBase* layout,
SingleShaderStage stage);
using PipelineConstantEntry = std::pair<std::string, double>;
struct ProgrammableStage {
Ref<ShaderModuleBase> module;
std::string entryPoint;
// The metadata lives as long as module, that's ref-ed in the same structure.
const EntryPointMetadata* metadata = nullptr;
std::vector<PipelineConstantEntry> constants;
};
class PipelineBase : public ApiObjectBase, public CachedObject {
public:
PipelineLayoutBase* GetLayout();
const PipelineLayoutBase* GetLayout() const;
const RequiredBufferSizes& GetMinBufferSizes() const;
const ProgrammableStage& GetStage(SingleShaderStage stage) const;
const PerStage<ProgrammableStage>& GetAllStages() const;
wgpu::ShaderStage GetStageMask() const;
ResultOrError<Ref<BindGroupLayoutBase>> GetBindGroupLayout(uint32_t groupIndex);
// Helper functions for std::unordered_map-based pipeline caches.
size_t ComputeContentHash() override;
static bool EqualForCache(const PipelineBase* a, const PipelineBase* b);
// Implementation of the API entrypoint. Do not use in a reentrant manner.
BindGroupLayoutBase* APIGetBindGroupLayout(uint32_t groupIndex);
// Initialize() should only be called once by the frontend.
virtual MaybeError Initialize() = 0;
protected:
PipelineBase(DeviceBase* device,
PipelineLayoutBase* layout,
const char* label,
std::vector<StageAndDescriptor> stages);
PipelineBase(DeviceBase* device, ObjectBase::ErrorTag tag);
private:
MaybeError ValidateGetBindGroupLayout(uint32_t group);
wgpu::ShaderStage mStageMask = wgpu::ShaderStage::None;
PerStage<ProgrammableStage> mStages;
Ref<PipelineLayoutBase> mLayout;
RequiredBufferSizes mMinBufferSizes;
};
} // namespace dawn_native
#endif // DAWNNATIVE_PIPELINE_H_