/// <summary>
/// Releases a semaphore for a given LaunchDma method call.
/// </summary>
/// <param name="argument">The LaunchDma call argument</param>
private void ReleaseSemaphore(int argument)
{
LaunchDmaSemaphoreType type = (LaunchDmaSemaphoreType)((argument >> 3) & 0x3);
if (type != LaunchDmaSemaphoreType.None)
{
ulong address = ((ulong)_state.State.SetSemaphoreA << 32) | _state.State.SetSemaphoreB;
if (type == LaunchDmaSemaphoreType.ReleaseOneWordSemaphore)
{
_channel.MemoryManager.Write(address, _state.State.SetSemaphorePayload);
}
else /* if (type == LaunchDmaSemaphoreType.ReleaseFourWordSemaphore) */
{
_channel.MemoryManager.Write(address + 8, _context.GetTimestamp());
_channel.MemoryManager.Write(address, (ulong)_state.State.SetSemaphorePayload);
}
}
}
/// <summary>
/// Writes a GPU counter to guest memory.
/// This also writes the current timestamp value.
/// </summary>
/// <param name="type">Counter to be written to memory</param>
private void ReportCounter(ReportCounterType type)
{
ulong gpuVa = _state.State.SemaphoreAddress.Pack();
ulong ticks = _context.GetTimestamp();
ICounterEvent counter = null;
void resultHandler(object evt, ulong result)
{
CounterData counterData = new CounterData
{
Counter = result,
Timestamp = ticks
};
if (counter?.Invalid != true)
{
_channel.MemoryManager.Write(gpuVa, counterData);
}
}
switch (type)
{
case ReportCounterType.Zero:
resultHandler(null, 0);
break;
case ReportCounterType.SamplesPassed:
counter = _context.Renderer.ReportCounter(CounterType.SamplesPassed, resultHandler, false);
break;
case ReportCounterType.PrimitivesGenerated:
counter = _context.Renderer.ReportCounter(CounterType.PrimitivesGenerated, resultHandler, false);
break;
case ReportCounterType.TransformFeedbackPrimitivesWritten:
counter = _context.Renderer.ReportCounter(CounterType.TransformFeedbackPrimitivesWritten, resultHandler, false);
break;
}
_channel.MemoryManager.CounterCache.AddOrUpdate(gpuVa, counter);
}
/// <summary>
/// Writes a GPU counter to guest memory.
/// </summary>
/// <param name="argument">Method call argument</param>
public void Semaphored(int argument)
{
ulong address = ((ulong)_state.State.SemaphorebOffsetLower << 2) |
((ulong)_state.State.SemaphoreaOffsetUpper << 32);
int value = _state.State.SemaphorecPayload;
SemaphoredOperation operation = _state.State.SemaphoredOperation;
if (_state.State.SemaphoredReleaseSize == SemaphoredReleaseSize.SixteenBytes)
{
_parent.MemoryManager.Write(address + 4, 0);
_parent.MemoryManager.Write(address + 8, _context.GetTimestamp());
}
// TODO: Acquire operations (Wait), interrupts for invalid combinations.
if (operation == SemaphoredOperation.Release)
{
_parent.MemoryManager.Write(address, value);
}
else if (operation == SemaphoredOperation.Reduction)
{
bool signed = _state.State.SemaphoredFormat == SemaphoredFormat.Signed;
int mem = _parent.MemoryManager.Read <int>(address);
switch (_state.State.SemaphoredReduction)
{
case SemaphoredReduction.Min:
value = signed ? Math.Min(mem, value) : (int)Math.Min((uint)mem, (uint)value);
break;
case SemaphoredReduction.Max:
value = signed ? Math.Max(mem, value) : (int)Math.Max((uint)mem, (uint)value);
break;
case SemaphoredReduction.Xor:
value ^= mem;
break;
case SemaphoredReduction.And:
value &= mem;
break;
case SemaphoredReduction.Or:
value |= mem;
break;
case SemaphoredReduction.Add:
value += mem;
break;
case SemaphoredReduction.Inc:
value = (uint)mem < (uint)value ? mem + 1 : 0;
break;
case SemaphoredReduction.Dec:
value = (uint)mem > 0 && (uint)mem <= (uint)value ? mem - 1 : value;
break;
}
_parent.MemoryManager.Write(address, value);
}
}