Unreal Engine Issues
Unreal Engine Issues
Editor/Game Ensure hit with RayTracing enabled on AMD GPU
UE - Graphics Features - Ray Tracing - Feb 4, 2025A Static Mesh asset will trigger an ensure when generating building the ray tracing acceleration structure on AMD GPUs. ...
Each bone scales are improperly applied in the physical animation
UE - Simulation - Visual - Feb 4, 2025Suggested fix from licensee is : PhysAnim.cpp@339 #if 0 FVector RelPos = RecipScale3D * RelTM.GetLocation(); #else FVector RelPos = (BoneIndex == 0) ? RecipScale3D * RelTM.GetLocation() : Rec ...
FLevelInstanceActorGuid::GetGuid issue in Multiplayer
UE - World Creation - Worldbuilding Tools - Level Instances - Feb 3, 2025I am doing some runtime manipulation of data layers and I am running into a check failure due to a zero guid in FLevelInstanceActorGuid::GetGuid during multiplayer testing. When I debug FLevelInsta ...
Spline mesh crashing in FRayTracingDynamicGeometryCollection::AddDynamicMeshBatchForGeometryUpdate
UE - Graphics Features - Ray Tracing - Jan 31, 2025A crash occurs when using ray tracing with spline meshes preceded by the following ensure : Ensure condition failed: NumCPUVertices <= VertexBufferNumElements File: Engine\Source\Runtime\Renderer\ ...
Building Geometry Stops UTickableWorldSubsystem Ticking
UE - Gameplay - Jan 31, 2025Can be mitigated by reopening the Level. There is a repro project provided by the licensee on the case ticket. ...
Lumen ignores Landscape Holes (Landscape Visibility) when Hardware Ray Tracing is enabled and Ray Lighting Mode is set to Surface Cache
UE - Graphics Features - Ray Tracing - Jan 31, 2025Context Lumen is the default global illumination and reflections system. Lumen renders diffuse interreflection with infinite bounces and indirect specular reflections in large, detailed environments ...
Adding SmartObjectZoneAnnotationComponent to a blueprint actor causes a crash when building the package
UE - AI - SmartObject - Jan 30, 2025If placing an actor with SmartObjectZoneAnnotationComponent added to blueprint actor in a level, it will crash when the level open. As a workaround, adding SmartObjectZoneAnnotationComponent to the ...
No warnings or errors if a UEnum has Bitflags metadata, but no Flags flag.
UE - Framework - Blueprint Compiler - Jan 29, 2025The problem here isn't obvious: the native enum, EAnotherEnum, is missing the Flags flag for the UEnum. As a result, K2Node_GetEnumeratorNameAsString returns the max enum when it gets a combined fla ...
Bitmask ints can't be converted to strings
UE - Framework - Blueprint Compiler - Jan 29, 2025While we do have an auto cast function that handles an int to string conversion, bitmask ints use a "bitmask" subcategory which thwarts are ability to find the cast function. ...
K2Node_GetEnumeratorName doesn't support bitmasks
UE - Framework - Blueprint Compiler - Jan 29, 2025This is almost identical to [Link Removed]. The difference is that we need a variant of UEnum::GetNameByValue that supports bitmasks. We'll likely have to run this by Core. ...