blob: 8ac412fe571e6e965cde506e2cf4f39e8f3fa8c9 (
plain) (
blame)
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
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
using Ryujinx.Common.Logging;
using System;
using System.Diagnostics;
using System.Linq;
namespace Ryujinx.Graphics.Vulkan
{
internal class AutoFlushCounter
{
// How often to flush on framebuffer change.
private readonly static long _framebufferFlushTimer = Stopwatch.Frequency / 1000; // (1ms)
// How often to flush on draw when fast flush mode is enabled.
private readonly static long _drawFlushTimer = Stopwatch.Frequency / 666; // (1.5ms)
// Average wait time that triggers fast flush mode to be entered.
private readonly static long _fastFlushEnterThreshold = Stopwatch.Frequency / 666; // (1.5ms)
// Average wait time that triggers fast flush mode to be exited.
private readonly static long _fastFlushExitThreshold = Stopwatch.Frequency / 10000; // (0.1ms)
// Number of frames to average waiting times over.
private const int SyncWaitAverageCount = 20;
private const int MinDrawCountForFlush = 10;
private const int MinConsecutiveQueryForFlush = 10;
private const int InitialQueryCountForFlush = 32;
private readonly VulkanRenderer _gd;
private long _lastFlush;
private ulong _lastDrawCount;
private bool _hasPendingQuery;
private int _consecutiveQueries;
private int _queryCount;
private readonly int[] _queryCountHistory = new int[3];
private int _queryCountHistoryIndex;
private int _remainingQueries;
private readonly long[] _syncWaitHistory = new long[SyncWaitAverageCount];
private int _syncWaitHistoryIndex;
private bool _fastFlushMode;
public AutoFlushCounter(VulkanRenderer gd)
{
_gd = gd;
}
public void RegisterFlush(ulong drawCount)
{
_lastFlush = Stopwatch.GetTimestamp();
_lastDrawCount = drawCount;
_hasPendingQuery = false;
_consecutiveQueries = 0;
}
public bool RegisterPendingQuery()
{
_hasPendingQuery = true;
_consecutiveQueries++;
_remainingQueries--;
_queryCountHistory[_queryCountHistoryIndex]++;
// Interrupt render passes to flush queries, so that early results arrive sooner.
if (++_queryCount == InitialQueryCountForFlush)
{
return true;
}
return false;
}
public int GetRemainingQueries()
{
if (_remainingQueries <= 0)
{
_remainingQueries = 16;
}
if (_queryCount < InitialQueryCountForFlush)
{
return Math.Min(InitialQueryCountForFlush - _queryCount, _remainingQueries);
}
return _remainingQueries;
}
public bool ShouldFlushQuery()
{
return _hasPendingQuery;
}
public bool ShouldFlushDraw(ulong drawCount)
{
if (_fastFlushMode)
{
long draws = (long)(drawCount - _lastDrawCount);
if (draws < MinDrawCountForFlush)
{
if (draws == 0)
{
_lastFlush = Stopwatch.GetTimestamp();
}
return false;
}
long flushTimeout = _drawFlushTimer;
long now = Stopwatch.GetTimestamp();
return now > _lastFlush + flushTimeout;
}
return false;
}
public bool ShouldFlushAttachmentChange(ulong drawCount)
{
_queryCount = 0;
// Flush when there's an attachment change out of a large block of queries.
if (_consecutiveQueries > MinConsecutiveQueryForFlush)
{
return true;
}
_consecutiveQueries = 0;
long draws = (long)(drawCount - _lastDrawCount);
if (draws < MinDrawCountForFlush)
{
if (draws == 0)
{
_lastFlush = Stopwatch.GetTimestamp();
}
return false;
}
long flushTimeout = _framebufferFlushTimer;
long now = Stopwatch.GetTimestamp();
return now > _lastFlush + flushTimeout;
}
public void Present()
{
// Query flush prediction.
_queryCountHistoryIndex = (_queryCountHistoryIndex + 1) % 3;
_remainingQueries = _queryCountHistory.Max() + 10;
_queryCountHistory[_queryCountHistoryIndex] = 0;
// Fast flush mode toggle.
_syncWaitHistory[_syncWaitHistoryIndex] = _gd.SyncManager.GetAndResetWaitTicks();
_syncWaitHistoryIndex = (_syncWaitHistoryIndex + 1) % SyncWaitAverageCount;
long averageWait = (long)_syncWaitHistory.Average();
if (_fastFlushMode ? averageWait < _fastFlushExitThreshold : averageWait > _fastFlushEnterThreshold)
{
_fastFlushMode = !_fastFlushMode;
Logger.Debug?.PrintMsg(LogClass.Gpu, $"Switched fast flush mode: ({_fastFlushMode})");
}
}
}
}
|
