ExportMaterialUVDensities() gets the incorrect value where the alpha channel is referenced

UE - Rendering Architecture - Materials - Apr 16, 2024

ExportMaterialUVDensities() gets the incorrect value where the alpha channel is referenced (e.g. RegisterIndex of the texture is [3] or [7]) because FMeshRenderer::RenderMaterialTexCoordScales() use ...

MaterialTextureScale calculated incorrectly for materials with WorldPositionOffset

UE - Rendering Architecture - Materials - Apr 16, 2024

When a Material uses WorldPositionOffset, the MaterialTextureScale is calculated incorrectly because FMaterialUtilities::ExportMaterialUVDensities() calls FMeshRenderer::RenderMaterialTexCoordScales ...

422 YUV To RGB Conversion produces incorrect result

UE - Virtual Production - IO - Media - Apr 16, 2024

HLODs with River, Lake, and Ocean not working

UE - World Creation - Worldbuilding Tools - HLOD - Apr 16, 2024

[AI] Incorrect collision for USplineMeshComponent

UE - Framework - Apr 15, 2024

The collision for a spline mesh can be calculated incorrectly. The issue appears to be when Alpha is out of range when calculating the slice transforms at splice offsets. ...

Ray Tracing Translucency in a Post Process Volume breaks in Lit viewmode

UE - Graphics Features - Ray Tracing - Apr 15, 2024

Encountered a strange issue where switching to RT Translucency on a PPV would cause it to appear incorrect. However, if you swap the viewmode to Path Tracing, it does appear correct. See screenshots ...

Opening a Level inside the ReferenceViewer does not Prompt the Save window if the Level is dirty.

UE - Editor - Applied Usability - Apr 15, 2024

If you right click on a level node in the reference viewer and choose edit, it will bypass prompting you to save unsaved changes in your current level, silently discarding all unsaved work. ...

Crash in ULandscapeComponent::UpdatePhysicalMaterialTask() during landscape sculpting undo operations

UE - LD & Modeling - Terrain - Landscape - Apr 11, 2024

Using landscape sculpting tools, then executing Undo with Ctrl+Z ...

Take Recorder - Viewport Freezing and Performance Degradation When Recording Without Subsequences

UE - Anim - Sequencer - Take Recorder - Apr 11, 2024

Description: In Unreal Engine 5.4, when recording camera movements using the Take Recorder with the "Record Sources Into Sub Sequences" option turned off, significant viewport freezing and performan ...