Problems with light maps

Development Rendering
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332674-lightmap.png
332674-lightmap.png937×464 410 KB

I have a problem with lightmap baking. They look a little weird, I don’t know what it could be, strange effects as I show in the image.

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Hi!

Could you show us the lightmap uv of the problematic mesh please?

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Hello, how do I do that, from the static mesh editor?

332677-staticmesh.jpg
332677-staticmesh.jpg1920×1039 299 KB

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332682-lightmap.jpg
332682-lightmap.jpg1920×1039 490 KB

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So yes, THAT is causing the problem!!
The uv contain overlapping areas! And because different parts of your mesh gets the same lighting information from the map: it will be inaccurate!!
You can either fix it in your 3d app, you’re bringing your meshes from or you can generate lightmap uvs by Unreal!!