Switching raytracing console variable in runtime can crash engine.

UE - Graphics Features - Lumen - May 13, 2020

Licensee reported that is caused by missing ECVF_RenderThreadSafe flag in these console variable definitions. r.RayTracing.Shadows r.RayTracing.AmbientOcclusion r.RayTracing.Reflections Here is a ...

Crash occurs loading a sublevel containing landscape with ray tracing enabled

UE - LD & Modeling - Terrain - Landscape - May 13, 2020

In raytracing enabled, When loading a sublevel containing landscape with LoadStreamLevel function following error is shown. Assertion failed: Pair != nullptr [Link Removed] [Line: 584] Licensee re ...

[CrashReport] UE4Editor-NiagaraEditor!UNiagaraStackRendererItem::GetIconBrush() [NiagaraStackRendererItem.cpp:319]

UE - Niagara - May 8, 2020

Generated from CrashReporter Similar issue: [Link Removed] ...

Mobile Depth of Field Focal Region is broken (not RDG)

UE - Platform - Mobile - May 8, 2020

Result: notice that depth of field exhibits a rendering artifact (see attached screenshot). The PostProcessIntegrateDof pass is rendering to the wrong output dimensions, causing the artifact. This ...

[CrashReport] UE4Editor-Engine!FMaterialShaderMap::ProcessCompilationResults(TArray<FShaderCommonCompileJob *,TSizedDefaultAllocator<32>

UE - Rendering Architecture - RHI - Feb 21, 2020

Generated from CrashReporter ErrorMessage: Assertion failed: Shader [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Engine/Private/Materials/MaterialShader.cpp] [Line: 1811] Comments: Compile ...

When using a SpeedTree asset, a Zero Triangles warning appears

Tools - Nov 25, 2019

When exporting from SpeedTree with LODs + billboard, It seems that a warning is issued by including a material used only by Billboard. Is there a way to deal with it? ...

[CrashReport] UE4Editor-Landscape!ULandscapeComponent::FillLayer(ULandscapeLayerInfoObject *,FLandscapeEditDataInterface &) [LandscapeEditInterface.cpp:1898]

UE - LD & Modeling - Terrain - Landscape - Oct 11, 2019

Generated from CrashReporter Unhandled exception ...

Packaging fails with Event Driven loader enabled and two function libraries reference each other

UE - Foundation - Core - Mar 29, 2017

Packaging fails with Event Driven loader enabled and two function libraries reference each other even though the functions referenced in each library to NOT call each other in such a way as to creat ...