Static light artefacts after migrate project to 5.0

[KomarEvgenij]

Hello everyone! I’m trying to move the project to 5.0 and strange sharpen artifacts appear when trying to bake the light (use cpu lightmapper). Pic 1 as it was baked before, pic 2 as it is baked now, how can it be fixed? I tried to remove the light and replace it with a new one, but everything is the same

Screenshoots

[SupportiveEntity]

Hey there @KomarEvgenij! Does this occur with freshly made maps as well? It might be necessary to back the project up, then delete the Derived Data Cache and rebake.

[KomarEvgenij]

Thanks, I tried, but it doesn’t help. I created a clean project, a new scene, imported only the mesh there and the artifacts are still there :(. By the way, everything is fine on versions 5.1.1 and 5.2.0, this happens only on 5.0.3. So I think I won’t include support for version 5.0.3 for the marketplace, this is the only solution)

Screenshot

[SupportiveEntity]

Ahhh that’s unfortunate. It seems like the issue is at least localized to that version. It seems that the lightmapper is failing to read properly and losing resolution. I hadn’t been able to reproduce it on my side so that’s extra interesting. I know there was a bug with virtual shadowmapping in 5.03, but that’s a bit different here.

[Arkiras]

Lightmap directionality was broken in 5.0 anyway, wouldn’t surprise me if this was related.

[SupportiveEntity]

Thanks for the heads up Ark, that’s likely related in this case. Since this is for a marketplace asset, even backporting that fix won’t help users that download the assets so in this case not much to do unfortunately.