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using Ryujinx.Common.Logging;
using Ryujinx.Graphics.GAL;
using Silk.NET.Vulkan;
using System;
using System.Runtime.InteropServices;
using System.Threading;
namespace Ryujinx.Graphics.Vulkan.Queries
{
class BufferedQuery : IDisposable
{
private const int MaxQueryRetries = 5000;
private const long DefaultValue = unchecked((long)0xFFFFFFFEFFFFFFFE);
private const long DefaultValueInt = 0xFFFFFFFE;
private const ulong HighMask = 0xFFFFFFFF00000000;
private readonly Vk _api;
private readonly Device _device;
private readonly PipelineFull _pipeline;
private QueryPool _queryPool;
private readonly BufferHolder _buffer;
private readonly IntPtr _bufferMap;
private readonly CounterType _type;
private readonly bool _result32Bit;
private readonly bool _isSupported;
private readonly long _defaultValue;
private int? _resetSequence;
public unsafe BufferedQuery(VulkanRenderer gd, Device device, PipelineFull pipeline, CounterType type, bool result32Bit)
{
_api = gd.Api;
_device = device;
_pipeline = pipeline;
_type = type;
_result32Bit = result32Bit;
_isSupported = QueryTypeSupported(gd, type);
if (_isSupported)
{
QueryPipelineStatisticFlags flags = type == CounterType.PrimitivesGenerated ?
QueryPipelineStatisticFlags.GeometryShaderPrimitivesBit : 0;
var queryPoolCreateInfo = new QueryPoolCreateInfo
{
SType = StructureType.QueryPoolCreateInfo,
QueryCount = 1,
QueryType = GetQueryType(type),
PipelineStatistics = flags,
};
gd.Api.CreateQueryPool(device, queryPoolCreateInfo, null, out _queryPool).ThrowOnError();
}
var buffer = gd.BufferManager.Create(gd, sizeof(long), forConditionalRendering: true);
_bufferMap = buffer.Map(0, sizeof(long));
_defaultValue = result32Bit ? DefaultValueInt : DefaultValue;
Marshal.WriteInt64(_bufferMap, _defaultValue);
_buffer = buffer;
}
private static bool QueryTypeSupported(VulkanRenderer gd, CounterType type)
{
return type switch
{
CounterType.SamplesPassed => true,
CounterType.PrimitivesGenerated => gd.Capabilities.SupportsPipelineStatisticsQuery,
CounterType.TransformFeedbackPrimitivesWritten => gd.Capabilities.SupportsTransformFeedbackQueries,
_ => false,
};
}
private static QueryType GetQueryType(CounterType type)
{
return type switch
{
CounterType.SamplesPassed => QueryType.Occlusion,
CounterType.PrimitivesGenerated => QueryType.PipelineStatistics,
CounterType.TransformFeedbackPrimitivesWritten => QueryType.TransformFeedbackStreamExt,
_ => QueryType.Occlusion,
};
}
public Auto<DisposableBuffer> GetBuffer()
{
return _buffer.GetBuffer();
}
public void Reset()
{
End(false);
Begin(null);
}
public void Begin(int? resetSequence)
{
if (_isSupported)
{
bool needsReset = resetSequence == null || _resetSequence == null || resetSequence.Value != _resetSequence.Value;
bool isOcclusion = _type == CounterType.SamplesPassed;
_pipeline.BeginQuery(this, _queryPool, needsReset, isOcclusion, isOcclusion && resetSequence != null);
}
_resetSequence = null;
}
public void End(bool withResult)
{
if (_isSupported)
{
_pipeline.EndQuery(_queryPool);
}
if (withResult && _isSupported)
{
Marshal.WriteInt64(_bufferMap, _defaultValue);
_pipeline.CopyQueryResults(this);
}
else
{
// Dummy result, just return 0.
Marshal.WriteInt64(_bufferMap, 0);
}
}
private bool WaitingForValue(long data)
{
return data == _defaultValue ||
(!_result32Bit && ((ulong)data & HighMask) == ((ulong)_defaultValue & HighMask));
}
public bool TryGetResult(out long result)
{
result = Marshal.ReadInt64(_bufferMap);
return result != _defaultValue;
}
public long AwaitResult(AutoResetEvent wakeSignal = null)
{
long data = _defaultValue;
if (wakeSignal == null)
{
while (WaitingForValue(data))
{
data = Marshal.ReadInt64(_bufferMap);
}
}
else
{
int iterations = 0;
while (WaitingForValue(data) && iterations++ < MaxQueryRetries)
{
data = Marshal.ReadInt64(_bufferMap);
if (WaitingForValue(data))
{
wakeSignal.WaitOne(1);
}
}
if (iterations >= MaxQueryRetries)
{
Logger.Error?.Print(LogClass.Gpu, $"Error: Query result {_type} timed out. Took more than {MaxQueryRetries} tries.");
}
}
return data;
}
public void PoolReset(CommandBuffer cmd, int resetSequence)
{
if (_isSupported)
{
_api.CmdResetQueryPool(cmd, _queryPool, 0, 1);
}
_resetSequence = resetSequence;
}
public void PoolCopy(CommandBufferScoped cbs)
{
var buffer = _buffer.GetBuffer(cbs.CommandBuffer, true).Get(cbs, 0, sizeof(long), true).Value;
QueryResultFlags flags = QueryResultFlags.ResultWaitBit;
if (!_result32Bit)
{
flags |= QueryResultFlags.Result64Bit;
}
_api.CmdCopyQueryPoolResults(
cbs.CommandBuffer,
_queryPool,
0,
1,
buffer,
0,
(ulong)(_result32Bit ? sizeof(int) : sizeof(long)),
flags);
}
public unsafe void Dispose()
{
_buffer.Dispose();
if (_isSupported)
{
_api.DestroyQueryPool(_device, _queryPool, null);
}
_queryPool = default;
}
}
}
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