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https://github.com/Ryujinx/Ryujinx.git
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74 lines
1.8 KiB
C#
74 lines
1.8 KiB
C#
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using System;
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using System.Diagnostics;
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namespace Ryujinx.Graphics.Vulkan
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{
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internal class AutoFlushCounter
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{
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// How often to flush on framebuffer change.
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private readonly static long FramebufferFlushTimer = Stopwatch.Frequency / 1000;
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private const int MinDrawCountForFlush = 10;
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private const int InitialQueryCountForFlush = 32;
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private long _lastFlush;
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private ulong _lastDrawCount;
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private bool _hasPendingQuery;
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private int _queryCount;
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public void RegisterFlush(ulong drawCount)
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{
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_lastFlush = Stopwatch.GetTimestamp();
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_lastDrawCount = drawCount;
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_hasPendingQuery = false;
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}
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public bool RegisterPendingQuery()
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{
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_hasPendingQuery = true;
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// Interrupt render passes to flush queries, so that early results arrive sooner.
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if (++_queryCount == InitialQueryCountForFlush)
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{
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return true;
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}
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return false;
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}
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public bool ShouldFlushQuery()
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{
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return _hasPendingQuery;
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}
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public bool ShouldFlush(ulong drawCount)
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{
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_queryCount = 0;
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if (_hasPendingQuery)
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{
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return true;
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}
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long draws = (long)(drawCount - _lastDrawCount);
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if (draws < MinDrawCountForFlush)
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{
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if (draws == 0)
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{
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_lastFlush = Stopwatch.GetTimestamp();
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}
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return false;
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}
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long flushTimeout = FramebufferFlushTimer;
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long now = Stopwatch.GetTimestamp();
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return now > _lastFlush + flushTimeout;
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}
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}
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}
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