Check if the Device is rendering before waiting on it

Fixes an issue where there were missed references and an ``OperationCancelled`` exception when exiting an application.

src/Ryujinx.Graphics.Vulkan/Auto.cs

@@ -177,8 +177,6 @@ namespace Ryujinx.Graphics.Vulkan
                 }
             }
             
-            // This can somehow become -1.
-            // Logger.Info?.PrintMsg(LogClass.Gpu, $"_referenceCount: {_referenceCount}");
             Debug.Assert(_referenceCount >= 0);
         }
 

src/Ryujinx/AppHost.cs

@@ -591,15 +591,14 @@ namespace Ryujinx.Ava
             // If the GPU has no work and is cancelled, we need to handle that as well.
 
             WaitHandle.WaitAny(new[] { _gpuDoneEvent, _gpuCancellationTokenSource.Token.WaitHandle });
-            _gpuCancellationTokenSource.Dispose();
-
-            // Waiting for work to be finished before we dispose.
             if (_renderingStarted)
             {
+                // Waiting for work to be finished before we dispose.
                 Device.Gpu.WaitUntilGpuReady();
             }
 
             _gpuDoneEvent.Dispose();
+            _gpuCancellationTokenSource.Dispose();
 
             DisposeGpu();
             AppExit?.Invoke(this, EventArgs.Empty);
@@ -1084,6 +1083,8 @@ namespace Ryujinx.Ava
             _chrono.Start();
 
             Device.Gpu.Renderer.RunLoop(() =>
+            {
+                try
                 {
                     Device.Gpu.SetGpuThread();
                     Device.Gpu.InitializeShaderCache(_gpuCancellationTokenSource.Token);
@@ -1112,7 +1113,8 @@ namespace Ryujinx.Ava
                                 InitStatus();
                             }
 
-                        Device.PresentFrame(() => (RendererHost.EmbeddedWindow as EmbeddedWindowOpenGL)?.SwapBuffers());
+                            Device.PresentFrame(() =>
+                                (RendererHost.EmbeddedWindow as EmbeddedWindowOpenGL)?.SwapBuffers());
                         }
 
                         if (_ticks >= _ticksPerFrame)
@@ -1120,7 +1122,9 @@ namespace Ryujinx.Ava
                             UpdateStatus();
                         }
                     }
-
+                }
+                finally
+                {
                     // Make sure all commands in the run loop are fully executed before leaving the loop.
                     if (Device.Gpu.Renderer is ThreadedRenderer threaded)
                     {
@@ -1128,8 +1132,8 @@ namespace Ryujinx.Ava
                         threaded.FlushThreadedCommands();
                         Logger.Info?.PrintMsg(LogClass.Gpu, "Flushed!");
                     }
-
                     _gpuDoneEvent.Set();
+                }
             });
 
             (RendererHost.EmbeddedWindow as EmbeddedWindowOpenGL)?.MakeCurrent(true);