Unreal Engine Issues
Unreal Engine Issues
Base materials in exported Datasmith files imported into Unreal Engine are missing material function.
TM - Interoperability - Nov 19, 2024Datasmith imports in UE do not render materials due to missing material function. Works in UE 5.6 main but not UE 5.5 or 5.4 ...
Translucent light grid injection behavior
UE - Graphics Features - Nov 15, 2024Light injection into the Translucent Light Grid voxels does not use the correct location for clipping or attenuation. Both of these points are outside the voxel that is being updated. Light attenua ...
Crash in FNiagaraGPUInstanceCountManager::AddDrawIndirect when Android Vulkan Mobile preview platform is enabled
UE - Niagara - Nov 14, 2024In the Android Vulkan Mobile preview mode, when multiple GPU niagara systems are visible and the user moves the camera around the level it can cause a crash, potentially caused by a race condition o ...
'prefix parameter names' checkbox in a material function's settings does nothing.
UE - Rendering Architecture - Materials - Nov 14, 2024Prefix Parameter Names checkbox does not work as expected, and the Group names are unmodified. The value "UMaterialFunction::bPrefixParameterNames" does not appear to be used anywhere in the Engine ...
GenerateConvexHullFromPoints incorrect results
UE - Graphics Tools - Modeling Tools - Nov 14, 2024FGeomTools2D::GenerateConvexHullFromPoints can result in a point cloud that is not convex or doesn't completely cover the full area from the source points. ...
GeneratePsyms fails with installed builds due to missing dymp_syms tool and incorrect path space handling
UE - Platform - Apple - Nov 14, 2024Uncovered while testing [Link Removed] ...
Lyra: OnSpawn player abilities can fail to activate on client in networked sessions
UE - Gameplay - Gameplay Ability System - Nov 12, 2024A licensee who built their game on top of Lyra has reported that OnSpawn abilities, which is a feature provided by the LyraGameplayAbility base class via its ActivationPolicy, have a chance of faili ...
Modeling Mode Vertex Paint Color values are incorrect
UE - Graphics Tools - Modeling Tools - Nov 12, 2024There is a mismatch in between the input and output value of vertex colors painted using the "Modeling Mode" vertex painting tool. The example in the licensee's case is that if they wanted a 0.25f v ...
LoadMapMisc LLM category contains Static Mesh allocations
UE - Rendering Architecture - Nov 12, 2024UInstancedStaticMeshComponent::CreateSceneProxy() is missing a LLM_SCOPE(ELLMTag::InstancedMesh); and during level loading allocations for it appear in LoadMapMisc instead of InstancedMesh. Addi ...
Validity of a workaround for an issue with MobileRenderer where RecieveShadow can't be rendered properly
UE - Platform - Mobile - Nov 11, 2024Dynamic instancing is likely causing an issue where meshes that need shadows are getting combined with meshes that do not need shadows causing missing shadows. Tests were done with CSMs. Reproducti ...