Jeroen Bakker
0ad06cd39d
It is recommended to map buffers once and not each time the mapped memory is needed. This patch will map the buffer when created and unmap the buffer when the buffer is freed. This patch will reduce the overhead where the Vulkan driver or the virtual memory manager needs to be accessed. Pull Request: blender/blender#105588
59 lines
1.2 KiB
C++
59 lines
1.2 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2023 Blender Foundation. All rights reserved. */
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/** \file
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* \ingroup gpu
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*/
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#pragma once
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#include "gpu_context_private.hh"
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#include "vk_common.hh"
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#include "vk_context.hh"
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namespace blender::gpu {
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/**
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* Class for handing vulkan buffers (allocation/updating/binding).
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*/
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class VKBuffer {
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int64_t size_in_bytes_;
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VkBuffer vk_buffer_ = VK_NULL_HANDLE;
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VmaAllocation allocation_ = VK_NULL_HANDLE;
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/* Pointer to the virtually mapped memory. */
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void *mapped_memory_ = nullptr;
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public:
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VKBuffer() = default;
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virtual ~VKBuffer();
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/** Has this buffer been allocated? */
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bool is_allocated() const;
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bool create(VKContext &context,
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int64_t size,
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GPUUsageType usage,
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VkBufferUsageFlagBits buffer_usage);
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void update(const void *data) const;
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void read(void *data) const;
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bool free(VKContext &context);
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int64_t size_in_bytes() const
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{
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return size_in_bytes_;
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}
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VkBuffer vk_handle() const
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{
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return vk_buffer_;
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}
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private:
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/** Check if this buffer is mapped. */
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bool is_mapped() const;
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bool map(VKContext &context);
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void unmap(VKContext &context);
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};
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} // namespace blender::gpu
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