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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);
uint8_t *findAvailableMemory(size_t size);
void freeSet(const VkDescriptorSet descriptorSet);
size_t computeTotalFreeSize() const;
struct Node
{
Node(uint8_t *set, size_t size)
: set(set)
, size(size)
{}
bool operator<(const Node &node) const { return set < node.set; }
bool operator==(const uint8_t *other) const { return set == other; }
uint8_t *set = nullptr;
size_t size = 0;
};
std::set<Node> nodes;
uint8_t *pool = nullptr;
size_t poolSize = 0;
};
static inline DescriptorPool *Cast(VkDescriptorPool object)
{
return DescriptorPool::Cast(object);
}
} // namespace vk
#endif // VK_DESCRIPTOR_POOL_HPP_