The wrong emissive value may be used on Nanite objects with custom primitive data when Lumen card sharing is enabled. This issue can be mitigated with:
r.LumenScene.SurfaceCache.AllowCardSharing 0
or
r.LumenScene.SurfaceCache.DetectCardSharingCompatibility 0
Expected
The correct emissive color is applied in the scene
Actual
When the camera approaches the spheres they sometimes use/share the wrong emissive color because of Lumen card sharing. This issue can be mitigated with:
r.LumenScene.SurfaceCache.AllowCardSharing 0
or
r.LumenScene.SurfaceCache.DetectCardSharingCompatibility 0
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-313528 in the post.
0 |
Component | UE - Graphics Features - Lumen |
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Affects Versions | 5.6 |
Target Fix | 5.7 |
Created | Aug 13, 2025 |
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Updated | Aug 14, 2025 |