mirror of
https://github.com/SimoneN64/Kaizen.git
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96 lines
No EOL
2.8 KiB
C++
96 lines
No EOL
2.8 KiB
C++
/* Copyright (c) 2017-2023 Hans-Kristian Arntzen
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include "vulkan_headers.hpp"
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#include "intrusive.hpp"
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#include <vector>
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#include <algorithm>
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namespace Vulkan
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{
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class Device;
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class Buffer;
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struct BufferBlockAllocation
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{
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uint8_t *host;
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Util::IntrusivePtr<Buffer> buffer;
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VkDeviceSize offset;
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VkDeviceSize padded_size;
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};
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class BufferBlock
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{
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public:
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~BufferBlock();
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BufferBlockAllocation allocate(VkDeviceSize allocate_size);
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inline bool is_mapped() const { return mapped != nullptr; }
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const Buffer &get_buffer() const { return *buffer; }
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void unmap(Device &device);
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inline VkDeviceSize get_offset() const { return offset; }
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inline VkDeviceSize get_size() const { return size; }
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private:
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friend class BufferPool;
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Util::IntrusivePtr<Buffer> buffer;
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VkDeviceSize offset = 0;
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VkDeviceSize alignment = 0;
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VkDeviceSize size = 0;
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VkDeviceSize spill_size = 0;
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uint8_t *mapped = nullptr;
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};
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class BufferPool
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{
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public:
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~BufferPool();
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void init(Device *device, VkDeviceSize block_size, VkDeviceSize alignment, VkBufferUsageFlags usage);
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void reset();
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// Used for allocating UBOs, where we want to specify a fixed size for range,
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// and we need to make sure we don't allocate beyond the block.
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void set_spill_region_size(VkDeviceSize spill_size);
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void set_max_retained_blocks(size_t max_blocks);
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VkDeviceSize get_block_size() const
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{
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return block_size;
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}
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BufferBlock request_block(VkDeviceSize minimum_size);
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void recycle_block(BufferBlock &block);
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private:
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Device *device = nullptr;
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VkDeviceSize block_size = 0;
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VkDeviceSize alignment = 0;
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VkDeviceSize spill_size = 0;
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VkBufferUsageFlags usage = 0;
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size_t max_retained_blocks = 0;
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std::vector<BufferBlock> blocks;
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BufferBlock allocate_block(VkDeviceSize size);
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};
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} |