/// <summary>
/// Executes a <see cref="CommandList"/> and, signals and retrieves the following fence value
/// </summary>
/// <param name="commandList">The input <see cref="CommandList"/> to execute</param>
/// <returns>The value of the new fence to wait for</returns>
private long GetFenceValueForCommandList(CommandList commandList)
{
CommandAllocatorPool commandAllocatorPool;
ID3D12CommandQueue commandQueue;
ID3D12Fence fence;
long fenceValue;
switch (commandList.CommandListType)
{
case CommandListType.Compute:
commandAllocatorPool = ComputeAllocatorPool;
commandQueue = NativeComputeCommandQueue;
fence = NativeComputeFence;
fenceValue = NextComputeFenceValue;
NextComputeFenceValue++;
break;
case CommandListType.Copy:
commandAllocatorPool = CopyAllocatorPool;
commandQueue = NativeCopyCommandQueue;
fence = NativeCopyFence;
fenceValue = NextCopyFenceValue;
NextCopyFenceValue++;
break;
case CommandListType.Direct:
commandAllocatorPool = DirectAllocatorPool;
commandQueue = NativeDirectCommandQueue;
fence = NativeDirectFence;
fenceValue = NextDirectFenceValue;
NextDirectFenceValue++;
break;
default: throw new NotSupportedException($"Unsupported command list of type {commandList.CommandListType}");
}
commandAllocatorPool.Enqueue(commandList.CommandAllocator, fenceValue);
commandQueue.ExecuteCommandLists(commandList.NativeCommandList);
commandQueue.Signal(fence, fenceValue);
return(fenceValue);
}
/// <summary>
/// Executes a <see cref="CommandList"/> and waits for the GPU to finish processing it
/// </summary>
/// <param name="commandList">The input <see cref="CommandList"/> to execute</param>
internal void ExecuteCommandList(CommandList commandList)
{
ID3D12Fence fence = commandList.CommandListType switch
{
CommandListType.Direct => NativeDirectFence,
CommandListType.Compute => NativeComputeFence,
CommandListType.Copy => NativeCopyFence,
_ => throw new NotSupportedException("This command list type is not supported.")
};
long fenceValue = GetFenceValueForCommandList(commandList);
if (fenceValue <= fence.CompletedValue)
{
return;
}
fence.SetEventOnCompletion(fenceValue, default(IntPtr));
}
/// <summary>
/// Executes a <see cref="CommandList"/> and waits for the GPU to finish processing it
/// </summary>
/// <param name="commandList">The input <see cref="CommandList"/> to execute</param>
internal void ExecuteCommandList(CommandList commandList)
{
ID3D12Fence fence = commandList.CommandListType switch
{
CommandListType.Direct => NativeDirectFence,
CommandListType.Compute => NativeComputeFence,
CommandListType.Copy => NativeCopyFence,
_ => throw new NotSupportedException("This command list type is not supported.")
};
long fenceValue = GetFenceValueForCommandList(commandList);
if (fenceValue <= fence.CompletedValue)
{
return;
}
lock (fence)
{
fence.SetEventOnCompletion(fenceValue, AutoResetEvent.SafeWaitHandle.DangerousGetHandle());
AutoResetEvent.WaitOne();
}
}