117 lines
2.6 KiB
C++
117 lines
2.6 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#define CRASH_ON_MULTIPLE_MAPPINGS_TO_SAME_ALLOCATION
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#include "MemoryAllocation.hpp"
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#include "MemoryPool.hpp"
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#include <memory>
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#include <functional>
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namespace OpenVulkano::Vulkan
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{
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class ManagedBuffer
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{
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public:
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using Ptr = std::unique_ptr<ManagedBuffer, ManagedBufferDeleter>;
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MemoryAllocation* allocation;
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vk::DeviceSize offset, size;
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vk::Buffer buffer;
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vk::BufferUsageFlags usage;
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vk::MemoryPropertyFlags properties;
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void* mapped = nullptr;
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~ManagedBuffer()
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{
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allocation->device.destroy(buffer);
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}
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[[nodiscard]] bool IsLast() const
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{
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return (offset + size == allocation->used);
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}
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[[nodiscard]] bool IsMapped() const
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{
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return mapped || allocation->mapped;
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}
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/**
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* \brief Maps the buffer into the memory of the host.
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* \tparam T The type of the buffers data.
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* \param offset The offset from where to map the buffer.
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* \param size The size to be mapped. VK_WHOLE_SIZE to map the whole buffer.
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* \pparam longTermMapping If the mapping is intended to be held long term. Short term mappings must be freed before mapping a different region in the same memory allocation for them to work reliable with all drivers.
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* \return The pointer to the mapped buffer.
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*/
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template <typename T = void>
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T* Map(size_t offset = 0, vk::DeviceSize size = VK_WHOLE_SIZE, bool longTermMapping = true)
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{
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if (!mapped)
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{
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if (allocation->mapped || longTermMapping)
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{
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mapped = static_cast<uint8_t*>(allocation->Map()) + offset + this->offset;
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}
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else
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{
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if (size == VK_WHOLE_SIZE) size = this->size;
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mapped = allocation->MapChild(this->offset + offset, size);
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}
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}
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return static_cast<T*>(mapped);
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}
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/**
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* \brief Un-maps the buffer from the host.
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*/
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void UnMap()
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{
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if (mapped)
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{
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if (allocation->mapped)
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{
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allocation->UnMap();
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}
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else
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{
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allocation->UnMapChild();
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}
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mapped = nullptr;
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}
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}
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void Copy(void* data)
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{
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if (mapped)
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{
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memcpy(mapped, data, size);
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}
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else
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{
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void* dataMapped = Map(0, VK_WHOLE_SIZE, false);
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memcpy(dataMapped, data, size);
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UnMap();
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}
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}
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void Copy(const void* data, uint32_t size, uint32_t offset)
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{
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if(mapped) memcpy(static_cast<char*>(mapped) + offset, data, size);
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else
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{
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void* dataMapped = Map(offset, size, false);
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memcpy(dataMapped, data, size);
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UnMap();
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}
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}
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};
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}
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