forked from dolphin-emu/dolphin
62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
// Copyright 2016 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#pragma once
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#include <cstddef>
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#include <deque>
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#include <memory>
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#include <utility>
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#include "Common/CommonTypes.h"
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#include "VideoBackends/Vulkan/Constants.h"
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namespace Vulkan
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{
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class StreamBuffer
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{
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public:
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StreamBuffer(VkBufferUsageFlags usage, size_t max_size);
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~StreamBuffer();
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VkBuffer GetBuffer() const { return m_buffer; }
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VkDeviceMemory GetDeviceMemory() const { return m_memory; }
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u8* GetHostPointer() const { return m_host_pointer; }
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u8* GetCurrentHostPointer() const { return m_host_pointer + m_current_offset; }
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size_t GetCurrentSize() const { return m_current_size; }
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size_t GetCurrentOffset() const { return m_current_offset; }
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bool ReserveMemory(size_t num_bytes, size_t alignment, bool allow_reuse = true,
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bool allow_growth = true, bool reallocate_if_full = false);
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void CommitMemory(size_t final_num_bytes);
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static std::unique_ptr<StreamBuffer> Create(VkBufferUsageFlags usage, size_t initial_size,
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size_t max_size);
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private:
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bool ResizeBuffer(size_t size);
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void OnCommandBufferQueued(VkCommandBuffer command_buffer, VkFence fence);
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void OnCommandBufferExecuted(VkFence fence);
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// Waits for as many fences as needed to allocate num_bytes bytes from the buffer.
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bool WaitForClearSpace(size_t num_bytes);
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VkBufferUsageFlags m_usage;
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size_t m_current_size = 0;
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size_t m_maximum_size;
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size_t m_current_offset = 0;
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size_t m_current_gpu_position = 0;
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size_t m_last_allocation_size = 0;
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VkBuffer m_buffer = VK_NULL_HANDLE;
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VkDeviceMemory m_memory = VK_NULL_HANDLE;
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u8* m_host_pointer = nullptr;
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// List of fences and the corresponding positions in the buffer
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std::deque<std::pair<VkFence, size_t>> m_tracked_fences;
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bool m_coherent_mapping = false;
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};
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} // namespace Vulkan
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