95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
/* Copyright (c) 2019-2025, Arm Limited and Contributors
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 the "License";
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <unordered_map>
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#include "common/helpers.h"
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#include "common/vk_common.h"
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namespace vkb
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{
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class DescriptorSetLayout;
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namespace core
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{
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template <vkb::BindingType bindingType>
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class Device;
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using DeviceC = Device<vkb::BindingType::C>;
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} // namespace core
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/**
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* @brief Manages an array of fixed size VkDescriptorPool and is able to allocate descriptor sets
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*/
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class DescriptorPool
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{
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public:
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static const uint32_t MAX_SETS_PER_POOL = 16;
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DescriptorPool(vkb::core::DeviceC &device,
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const DescriptorSetLayout &descriptor_set_layout,
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uint32_t pool_size = MAX_SETS_PER_POOL);
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DescriptorPool(const DescriptorPool &) = delete;
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DescriptorPool(DescriptorPool &&) = default;
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~DescriptorPool();
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DescriptorPool &operator=(const DescriptorPool &) = delete;
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DescriptorPool &operator=(DescriptorPool &&) = delete;
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void reset();
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const DescriptorSetLayout &get_descriptor_set_layout() const;
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void set_descriptor_set_layout(const DescriptorSetLayout &set_layout);
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VkDescriptorSet allocate();
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VkResult free(VkDescriptorSet descriptor_set);
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private:
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vkb::core::DeviceC &device;
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const DescriptorSetLayout *descriptor_set_layout{nullptr};
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// Descriptor pool size
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std::vector<VkDescriptorPoolSize> pool_sizes;
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// Number of sets to allocate for each pool
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uint32_t pool_max_sets{0};
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// Total descriptor pools created
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std::vector<VkDescriptorPool> pools;
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// Count sets for each pool
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std::vector<uint32_t> pool_sets_count;
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// Current pool index to allocate descriptor set
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uint32_t pool_index{0};
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// Map between descriptor set and pool index
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std::unordered_map<VkDescriptorSet, uint32_t> set_pool_mapping;
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// Find next pool index or create new pool
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uint32_t find_available_pool(uint32_t pool_index);
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};
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} // namespace vkb
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