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BSP converted to static mesh has incorrect lightmap coordinate index, producing black or very dark object

This occurs in 4.10 and the 4.11 Preview 6.

For some reason converting a BSP to a static mesh produces a mesh with incorrect lightmap settings.

After lighting is built, the mesh appears black or very dark in the level.

After some testing changed the lightmap coordinate index in the static mesh settings from 0 to 1 which fixed the issue.

It was really not easy to find this out, and for any uninformed user it would likely be a nightmare to fix as trying to research the issue led me to no solutions.

The problem is easily reproducible in a new project:

New level, add BSP, convert to static mesh, build lighting = black object.

Open mesh and set lightmap coordinate index to 1 = properly lit object.

Product Version: UE 4.10
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asked Feb 25 '16 at 09:43 AM in Bug Reports

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Hi Acren,

I've entered a feature request for this with ticket UE-27480. I agree that the process should be seamless and should not be a worry for anyone when converting or creating new content.

Thank you!


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answered Feb 25 '16 at 09:44 PM

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Tim Hobson ♦♦ STAFF
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