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Generated Lightmap UV scale

Hi, I've got problem with lightmaps generated inside UE4. Meshes have 1st UV channel in good scale, but generating 2nd UV channel in editor rescales certain faces. alt text this is how lightmap density looks like: alt text and here you can see static mesh window: alt text

Summarizing: 1st UV channel works just fine, but 2nd, generated inside UE4 doesn't retain scale of faces. Could someone help me with that?

Thanks in advance.

Product Version: UE 4.12
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asked Jul 08 '16 at 09:36 AM in Using UE4

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thats what you get for letting ue4 generate them. what you can do is create them in your second uv channel in your 3d package of choice and make sure everything (every uv-island) is 1:1 to eachother. that way, even if you use that new 2nd uv channel to generate proper lightmaps from.

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answered Jul 08 '16 at 10:10 AM

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avatar image tomaszgora Jul 08 '16 at 10:18 AM

Unfortunately it doesn't work for me. After making 2nd UV in blender and then in ue4 generating UV from 2nd channel to 2nd, I have the same results. Small faces are scaled up.

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