[VideoOut] Order relay work behind the presenter command stream

Co-authored-by: Sekai <140012992+igettingit@users.noreply.github.com>

src/SharpEmu.Libs/VideoOut/VulkanVideoPresenter.Scheduler.cs

@@ -22,7 +22,7 @@ internal static unsafe partial class VulkanVideoPresenter
         // This partial owns the submission scheduler and the GPU worker relay.
 
         private readonly object _queueGate = new();
-        private readonly GpuWorkerRelay _relay = new(WakeRenderThread);
+        private readonly GpuWorkerRelay _relay;
 
         internal GpuWorkerRelay Relay => _relay;
         private readonly SubmissionContext _submissionContext = new();

src/SharpEmu.Libs/VideoOut/VulkanVideoPresenter.cs

@@ -9,6 +9,7 @@ using SharpEmu.Libs.AvPlayer;
 using SharpEmu.Libs.Media;
 using SharpEmu.Libs.Gpu;
 using SharpEmu.Libs.Gpu.GpuCommands;
+using SharpEmu.Libs.Gpu.Scheduling;
 using SharpEmu.Libs.Gpu.Images;
 using SharpEmu.ShaderCompiler;
 using SharpEmu.ShaderCompiler.Vulkan;
@@ -255,6 +256,7 @@ internal static unsafe partial class VulkanVideoPresenter
         public Presenter(uint width, uint height)
         {
             _commandStream = new CommandStreamQueue(this);
+            _relay = new GpuWorkerRelay(WakeRenderThread, _commandStream.TryEnqueueControlBarrier);
             _hostBufferPool = new VulkanHostBufferPool(
                 MaximumCachedHostBufferBytes,
                 DestroyHostBufferAllocation);