Unreal Engine Issues

D3D device being lost ( DXGI_ERROR_DEVICE_REMOVED ) on both D3D11 and D3D12

It is hard to reproduce, but a licensee reported in UDN that it crashed on his computer frequently. He provided two crash dumps with logs which I uploaded here.[Link Removed][Link Removed] OS: W ...

Crash when using UShaderCodeLibraryToolsCommandlet in 4.25

Flickering artifacts are rendered when using Sky Atmosphere Component with Vulkan

Rendering the SkyAtmopshere component using Vulkan with and without Vulkan (SM5) enabled causes artifacts to appear on screen on Windows and Linux.  This was reported and tested in 4.25.1 (CL-135 ...

[CrashReport] UE4Editor-D3D12RHI!static void SetRayTracingHitGroup(class FD3D12CommandContext & const, class FD3D12RayTracingShaderTable *,

Generated from CrashReporter Error Message: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000088 User message (Aritzia_Bistro.log): datasmith re-import ...

Crash in D3DX12Residency::Internal::RemoveEntryList when travelling level

The engine may touch freed memory at D3DX12Residency::Internal::RemoveEntryList. The memory release operation that is causing the problem is in FD3D12DynamicHeapAllocator::AllocUploadResource(). If ...

Background Geometry has thin holes when r.SeparateTranslucencyScreenPercentage is 50

Edge artifacts appear when r.SeparateTranslucencyScreenPercentage=50. ...

[CrashReport] UE4Editor-D3D11RHI!FD3D11RenderQueryBatcher::PerFrameFlush() [D3D11Query.cpp:45]

Generated from CrashReporter ...

DXC: IOS Half precision no longer supported

[CrashReport] UE4Editor-D3D12RHI!FD3D12Viewport::PresentChecked(int) [D3D12Viewport.cpp:567]

Generated from CrashReporter ...

[CrashReport] UE4Editor-D3D11RHI!static void TerminateOnDeviceRemoved(HRESULT, struct ID3D11Device *) [D3D11Util.cpp:160]

This ticket tracks instances of D3DHung crashes now that Aftermath has been enabled in 4.25.0. [Link Removed] was marked fixed and closed with the enabling of Aftermath. Error Messages: Fatal err ...