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// 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_VULKAN_DESCRIPTORSETALLOCATOR_H_
#define SRC_DAWN_NATIVE_VULKAN_DESCRIPTORSETALLOCATOR_H_
#include <map>
#include <vector>
#include "dawn/common/SerialQueue.h"
#include "dawn/common/vulkan_platform.h"
#include "dawn/native/Error.h"
#include "dawn/native/IntegerTypes.h"
#include "dawn/native/ObjectBase.h"
#include "dawn/native/vulkan/DescriptorSetAllocation.h"
namespace dawn::native::vulkan {
class BindGroupLayout;
class DescriptorSetAllocator : public ObjectBase {
using PoolIndex = uint32_t;
using SetIndex = uint16_t;
public:
static Ref<DescriptorSetAllocator> Create(
BindGroupLayout* layout,
std::map<VkDescriptorType, uint32_t> descriptorCountPerType);
ResultOrError<DescriptorSetAllocation> Allocate();
void Deallocate(DescriptorSetAllocation* allocationInfo);
void FinishDeallocation(ExecutionSerial completedSerial);
private:
DescriptorSetAllocator(BindGroupLayout* layout,
std::map<VkDescriptorType, uint32_t> descriptorCountPerType);
~DescriptorSetAllocator() override;
MaybeError AllocateDescriptorPool();
BindGroupLayout* mLayout;
std::vector<VkDescriptorPoolSize> mPoolSizes;
SetIndex mMaxSets;
struct DescriptorPool {
VkDescriptorPool vkPool;
std::vector<VkDescriptorSet> sets;
std::vector<SetIndex> freeSetIndices;
};
std::vector<PoolIndex> mAvailableDescriptorPoolIndices;
std::vector<DescriptorPool> mDescriptorPools;
struct Deallocation {
PoolIndex poolIndex;
SetIndex setIndex;
};
SerialQueue<ExecutionSerial, Deallocation> mPendingDeallocations;
ExecutionSerial mLastDeallocationSerial = ExecutionSerial(0);
};
} // namespace dawn::native::vulkan
#endif // SRC_DAWN_NATIVE_VULKAN_DESCRIPTORSETALLOCATOR_H_