pcsx2/common/Vulkan/StreamBuffer.h

72 lines
2.3 KiB
C++

/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2021 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "common/Pcsx2Defs.h"
#include "common/Vulkan/Loader.h"
#include "vk_mem_alloc.h"
#include <deque>
#include <memory>
namespace Vulkan
{
class StreamBuffer
{
public:
StreamBuffer();
StreamBuffer(StreamBuffer&& move);
StreamBuffer(const StreamBuffer&) = delete;
~StreamBuffer();
StreamBuffer& operator=(StreamBuffer&& move);
StreamBuffer& operator=(const StreamBuffer&) = delete;
__fi bool IsValid() const { return (m_buffer != VK_NULL_HANDLE); }
__fi VkBuffer GetBuffer() const { return m_buffer; }
__fi u8* GetHostPointer() const { return m_host_pointer; }
__fi u8* GetCurrentHostPointer() const { return m_host_pointer + m_current_offset; }
__fi u32 GetCurrentSize() const { return m_size; }
__fi u32 GetCurrentSpace() const { return m_current_space; }
__fi u32 GetCurrentOffset() const { return m_current_offset; }
bool Create(VkBufferUsageFlags usage, u32 size);
void Destroy(bool defer);
bool ReserveMemory(u32 num_bytes, u32 alignment);
void CommitMemory(u32 final_num_bytes);
private:
bool AllocateBuffer(VkBufferUsageFlags usage, u32 size);
void UpdateCurrentFencePosition();
void UpdateGPUPosition();
// Waits for as many fences as needed to allocate num_bytes bytes from the buffer.
bool WaitForClearSpace(u32 num_bytes);
u32 m_size = 0;
u32 m_current_offset = 0;
u32 m_current_space = 0;
u32 m_current_gpu_position = 0;
VmaAllocation m_allocation = VK_NULL_HANDLE;
VkBuffer m_buffer = VK_NULL_HANDLE;
u8* m_host_pointer = nullptr;
// List of fences and the corresponding positions in the buffer
std::deque<std::pair<u64, u32>> m_tracked_fences;
};
} // namespace Vulkan