Unreal Engine Issues
Unreal Engine Issues
USplineMeshComponent::CalcBounds may return invalid value
USplineMeshComponent::CalcBounds function should be returning an FBoxSphereBounds type, but in the implementation it instead outputs an FBox. This may result in the returning of invalid results, esp ...
LOD dithered fade-out transition does not work since UE5.4
UE - Rendering Architecture - Aug 7, 2024When DitheredLODTransition is enabled for HierarchicalInstancedStaticMesh, in the previous version (5.1.1), dithering was applied during fade-in/fade-out, but in 5.4.3, dithering is not applied duri ...
Material base color is lighter on Nanite meshes when using 16-bit GBuffer
UE - Graphics Features - Nanite - Aug 6, 2024The base color is brighter on Nanite meshes than non-Nanite meshes when GBuffer Format is set to "Force 16-bits per channel" (r.GBufferFormat 5) even though the meshes are using the same material. ...
MemReport does not seem to respect mesh streaming
UE - Rendering Architecture - Aug 6, 2024The function "FStaticMeshLODResources::GetResourceSizeEx(...)" does not take into account that the buffers might be emptied, due to Mesh Streaming. This causes "obj list" to report sizes larger than ...
Screen Probes and Specular Firefly Flickering near screen edges
UE - Graphics Features - Lumen - Aug 6, 2024Lumen's rough specular indirect lighting buffer can have fireflies along the bottom and right edges of the screen. Also tested in //UE5/Main, CL: 35177423 ...
Streaming level is not visible when WorldPartitionRuntimeHashSet level is preloading and transitioning with package game.
UE - World Creation - Worldbuilding Tools - World Partition - Aug 5, 2024In levels where "WorldPartitionRuntimeHashSet" is specified as the runtime hash class, the world partition may not be correctly visible only in the package. This issue is reproduced only in packaged ...
Pasting custom data floats from a text editor into a instanced static mesh component crashes the editor
UE - Gameplay - Components - Aug 5, 2024When an instanced static mesh component with a material using a PerInstanceCustomData node has its data floats pasted in, the editor crashes with an "Array index out of bounds" error. The licensee w ...
Curve Table Editor's "Add Key" functionality does not work and appears to not be implemented..
UE - Editor - Workflow Systems - Aug 5, 2024Creating a new Curve Table asset, and then trying to use the right-click menu "Add Key" option does not do anything. FRealCurveModel still has the function, but it is left intentionally empty despit ...
r.VolumetricRenderTarget.PreferAsyncCompute producing different visuals
UE - Graphics Features - Aug 2, 2024When the cvar "r.VolumetricRenderTarget.PreferAsyncCompute" is enabled, it will cause Volumetric Clouds to ignore the influence of Volumetric Fog. In high-fog environments, this can cause the clouds ...
Issue with Landscape Layer Blending Node compile in UE 5.4.2
UE - LD & Modeling - Terrain - Aug 2, 2024When the SetMaterialAttributes Material Expression is used without an input to MaterialAttributes, it will cause Landscape Layer Blend expressions to fail to compile if it is the only layer on a par ...