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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_PIPELINELAYOUT_H_
#define DAWNNATIVE_PIPELINELAYOUT_H_
#include "common/Constants.h"
#include "common/ityp_array.h"
#include "common/ityp_bitset.h"
#include "dawn_native/BindingInfo.h"
#include "dawn_native/CachedObject.h"
#include "dawn_native/Error.h"
#include "dawn_native/Forward.h"
#include "dawn_native/dawn_platform.h"
#include <array>
#include <bitset>
namespace dawn_native {
MaybeError ValidatePipelineLayoutDescriptor(DeviceBase*,
const PipelineLayoutDescriptor* descriptor);
using BindGroupLayoutArray =
ityp::array<BindGroupIndex, Ref<BindGroupLayoutBase>, kMaxBindGroups>;
using BindGroupLayoutMask = ityp::bitset<BindGroupIndex, kMaxBindGroups>;
struct StageAndDescriptor {
SingleShaderStage shaderStage;
ShaderModuleBase* module;
std::string entryPoint;
};
class PipelineLayoutBase : public CachedObject {
public:
PipelineLayoutBase(DeviceBase* device, const PipelineLayoutDescriptor* descriptor);
~PipelineLayoutBase() override;
static PipelineLayoutBase* MakeError(DeviceBase* device);
static ResultOrError<Ref<PipelineLayoutBase>> CreateDefault(
DeviceBase* device,
std::vector<StageAndDescriptor> stages);
const BindGroupLayoutBase* GetBindGroupLayout(BindGroupIndex group) const;
BindGroupLayoutBase* GetBindGroupLayout(BindGroupIndex group);
const BindGroupLayoutMask& GetBindGroupLayoutsMask() const;
// Utility functions to compute inherited bind groups.
// Returns the inherited bind groups as a mask.
BindGroupLayoutMask InheritedGroupsMask(const PipelineLayoutBase* other) const;
// Returns the index of the first incompatible bind group in the range
// [0, kMaxBindGroups]
BindGroupIndex GroupsInheritUpTo(const PipelineLayoutBase* other) const;
// Functions necessary for the unordered_set<PipelineLayoutBase*>-based cache.
size_t ComputeContentHash() override;
struct EqualityFunc {
bool operator()(const PipelineLayoutBase* a, const PipelineLayoutBase* b) const;
};
protected:
PipelineLayoutBase(DeviceBase* device, ObjectBase::ErrorTag tag);
BindGroupLayoutArray mBindGroupLayouts;
BindGroupLayoutMask mMask;
};
} // namespace dawn_native
#endif // DAWNNATIVE_PIPELINELAYOUT_H_