Description

When using a lower value for Static Level Lighting Scale in the World Settings under Lightmass the blending of the area lights is not blended together for a smooth emissive look. Instead, there are noticeable issues. See attached images for reference.

Steps to Reproduce

1. Open UE4
2. Create a basic Emissive Material and assign to a static mesh
3. Place object in the world to use the emissive material
4. Select the actor and in the Details panel set Emissive for Static Lighting to true.
5. In the World Settings set the Static Lighting Level Scale to 0.1
6. Build Lighting.

Regression: no

Results: The area lights for the emissive material show the directions the light is cast.

Expected: Emissive baked quality should be improved. Similar to how it work with indirect bounces from point/spot lights. This has often been helpful for ArchVis teams to reduce seams between planar surfaces.

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Won't Fix
ComponentUE - Graphics Features
Affects Versions4.124.13
CreatedJun 13, 2016
ResolvedAug 18, 2021
UpdatedAug 18, 2021