My application renders its content with D3D11 and I present it with a D3D11Image from WPFDXInterop.
Sometimes when a Monitor is unplugged or when WIN+P is used to change the Projection options, my application crashes with UCEERR_RENDERTHREADFAILURE.
I could reproduce the same behaviour with the SharpDX Samples "WPFHost". Instead of using the D3D11Image, it uses the D3DImage directly. So it seems that the problem is unrelated to my application and WPFDXInterop and is caused by the D3DImage or WPF.
I have tried to listen to SystemEvents.DisplaySettingsChanging or WM_DISPLAYCHANGE and stop rendering for 5 seconds but it had no effect.
What fixes or workarounds can I use to prevent my application from crashing.
Example stacktrace:
System.Runtime.InteropServices.COMException: 'UCEERR_RENDERTHREADFAILURE (HRESULT: 0x88980406)'
PresentationCore.dll!System.Windows.Media.Composition.DUCE.Channel.SyncFlush()
PresentationCore.dll!System.Windows.Interop.HwndTarget.UpdateWindowSettings(bool enableRenderTarget, System.Windows.Media.Composition.DUCE.ChannelSet? channelSet)
PresentationCore.dll!System.Windows.Interop.HwndTarget.UpdateWindowPos(System.IntPtr lParam)
PresentationCore.dll!System.Windows.Interop.HwndTarget.HandleMessage(MS.Internal.Interop.WindowMessage msg, System.IntPtr wparam, System.IntPtr lparam)
PresentationCore.dll!System.Windows.Interop.HwndSource.HwndTargetFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled)
WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled)
WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o)
WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs)
WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler)
WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs)
WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam)
[Native to Managed Transition]
[Managed to Native Transition]
WindowsBase.dll!MS.Win32.HwndSubclass.DefWndProcWrapper(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam)
[Native to Managed Transition]
[Managed to Native Transition]
WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam)
[Native to Managed Transition]
[Managed to Native Transition]
WindowsBase.dll!MS.Win32.HwndSubclass.DefWndProcWrapper(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam)
[Native to Managed Transition]
[Managed to Native Transition]
WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam)
[Native to Managed Transition]
[Managed to Native Transition]
WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame frame)
PresentationFramework.dll!System.Windows.Application.RunDispatcher(object ignore)
PresentationFramework.dll!System.Windows.Application.RunInternal(System.Windows.Window window)
WPFHost.exe!WPFHost.App.Main()