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// Copyright 2018 The SwiftShader Authors. All Rights Reserved.
//
// 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 VK_DESCRIPTOR_POOL_HPP_
#define VK_DESCRIPTOR_POOL_HPP_
#include "VkObject.hpp"
#include <set>
namespace vk
{
class DescriptorPool : public Object<DescriptorPool, VkDescriptorPool>
{
public:
DescriptorPool(const VkDescriptorPoolCreateInfo* pCreateInfo, void* mem);
void destroy(const VkAllocationCallbacks* pAllocator);
static size_t ComputeRequiredAllocationSize(const VkDescriptorPoolCreateInfo* pCreateInfo);
VkResult allocateSets(uint32_t descriptorSetCount, const VkDescriptorSetLayout* pSetLayouts, VkDescriptorSet* pDescriptorSets);
void freeSets(uint32_t descriptorSetCount, const VkDescriptorSet* pDescriptorSets);
VkResult reset();
private:
VkResult allocateSets(size_t* sizes, uint32_t numAllocs, VkDescriptorSet* pDescriptorSets);
VkDescriptorSet findAvailableMemory(size_t size);
void freeSet(const VkDescriptorSet descriptorSet);
size_t computeTotalFreeSize() const;
struct Node
{
Node(VkDescriptorSet set, size_t size) : set(set), size(size) {}
bool operator<(const Node& node) const { return this->set < node.set; }
bool operator==(VkDescriptorSet set) const { return this->set == set; }
VkDescriptorSet set = VK_NULL_HANDLE;
size_t size = 0;
};
std::set<Node> nodes;
VkDescriptorSet pool = VK_NULL_HANDLE;
size_t poolSize = 0;
};
static inline DescriptorPool* Cast(VkDescriptorPool object)
{
return reinterpret_cast<DescriptorPool*>(object.get());
}
} // namespace vk
#endif // VK_DESCRIPTOR_POOL_HPP_