Ryujinx/Ryujinx.Graphics.Gpu/Engine/MethodReport.cs

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using Ryujinx.Common;
using Ryujinx.Graphics.GAL;
using Ryujinx.Graphics.Gpu.State;
using System;
using System.Runtime.InteropServices;
namespace Ryujinx.Graphics.Gpu.Engine
{
partial class Methods
{
private ulong _runningCounter;
private void Report(int argument)
{
ReportMode mode = (ReportMode)(argument & 3);
ReportCounterType type = (ReportCounterType)((argument >> 23) & 0x1f);
switch (mode)
{
case ReportMode.Semaphore: ReportSemaphore(); break;
case ReportMode.Counter: ReportCounter(type); break;
}
}
private void ReportSemaphore()
{
var state = _context.State.Get<ReportState>(MethodOffset.ReportState);
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_context.MemoryAccessor.Write(state.Address.Pack(), state.Payload);
_context.AdvanceSequence();
}
private struct CounterData
{
public ulong Counter;
public ulong Timestamp;
}
private void ReportCounter(ReportCounterType type)
{
CounterData counterData = new CounterData();
ulong counter = 0;
switch (type)
{
case ReportCounterType.Zero:
counter = 0;
break;
case ReportCounterType.SamplesPassed:
counter = _context.Renderer.GetCounter(CounterType.SamplesPassed);
break;
case ReportCounterType.PrimitivesGenerated:
counter = _context.Renderer.GetCounter(CounterType.PrimitivesGenerated);
break;
case ReportCounterType.TransformFeedbackPrimitivesWritten:
counter = _context.Renderer.GetCounter(CounterType.TransformFeedbackPrimitivesWritten);
break;
}
ulong ticks;
if (GraphicsConfig.FastGpuTime)
{
ticks = _runningCounter++;
}
else
{
ticks = ConvertNanosecondsToTicks((ulong)PerformanceCounter.ElapsedNanoseconds);
}
counterData.Counter = counter;
counterData.Timestamp = ticks;
Span<CounterData> counterDataSpan = MemoryMarshal.CreateSpan(ref counterData, 1);
Span<byte> data = MemoryMarshal.Cast<CounterData, byte>(counterDataSpan);
var state = _context.State.Get<ReportState>(MethodOffset.ReportState);
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_context.MemoryAccessor.Write(state.Address.Pack(), data);
}
private static ulong ConvertNanosecondsToTicks(ulong nanoseconds)
{
// We need to divide first to avoid overflows.
// We fix up the result later by calculating the difference and adding
// that to the result.
ulong divided = nanoseconds / 625;
ulong rounded = divided * 625;
ulong errorBias = ((nanoseconds - rounded) * 384) / 625;
return divided * 384 + errorBias;
}
}
}