blob: 61979c6f3fce61883ec0a9f68aafef245fd16245 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
// Copyright 2016 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <cstddef>
#include <deque>
#include <memory>
#include <utility>
#include "Common/CommonTypes.h"
#include "VideoBackends/Vulkan/Constants.h"
namespace Vulkan
{
class StreamBuffer
{
public:
StreamBuffer(VkBufferUsageFlags usage, u32 size);
~StreamBuffer();
VkBuffer GetBuffer() const { return m_buffer; }
u8* GetHostPointer() const { return m_host_pointer; }
u8* GetCurrentHostPointer() const { return m_host_pointer + m_current_offset; }
u32 GetCurrentSize() const { return m_size; }
u32 GetCurrentOffset() const { return m_current_offset; }
bool ReserveMemory(u32 num_bytes, u32 alignment);
void CommitMemory(u32 final_num_bytes);
static std::unique_ptr<StreamBuffer> Create(VkBufferUsageFlags usage, u32 size);
private:
bool AllocateBuffer();
void UpdateCurrentFencePosition();
void UpdateGPUPosition();
// Waits for as many fences as needed to allocate num_bytes bytes from the buffer.
bool WaitForClearSpace(u32 num_bytes);
VkBufferUsageFlags m_usage;
u32 m_size;
u32 m_current_offset = 0;
u32 m_current_gpu_position = 0;
u32 m_last_allocation_size = 0;
VkBuffer m_buffer = VK_NULL_HANDLE;
VmaAllocation m_alloc = 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
|
