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Can't generate UV Lightmaps for Custom models.

I imported custom models I made with MagicaVoxel, but even with "Auto Generate UVs" on for the import, after baking lighting the become completely black. In that mesh editor when I click on the "UV" tab nothing comes up at all and after trying to generate them again and again with different settings, nothing ever changes. Only UV channel 0 ever shows up.

Product Version: UE 4.16
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asked Aug 06 '17 at 01:36 AM in Rendering

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J5689
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Ok, thanks I'll try importing it to Blender.

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answered Aug 06 '17 at 07:37 PM

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J5689
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ue4's auto generate lightmap uv's only work when there is already a proper unwrapped uv-map available to read from and rearrange the already existing uv's.

It cannot unwrap the mesh for you.

Additionally, make sure that the lightmap size is set correctly.

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answered Aug 06 '17 at 05:00 PM

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Luos
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avatar image J5689 Aug 06 '17 at 06:35 PM

How would I get an unwrapped uv-map? When exporting with MagicaVoxel it only contains the .obj file and a .png of the texture pallet.

avatar image Luos Aug 06 '17 at 07:22 PM

no experience with magicavoxel, id import the file into blender or another 3d program and see if there is a uv-map, and if there is if there are no flipped normals or overlapping ones. or create a new uv-map for lightmap.

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