Question by m_truly · Apr 06, 2016 at 10:05 PM · normals flipped normals

Weird Normal Flipped Issue

Unity Pro 5.3.4

I have an FBX from MAX2014 and this FBX contains a number of objects inside. I have made various tweaks to the MAX file and then re-exported the FBX into Unity numerous times with no problem.

There is an object in the FBX we'll call objectX. After no problems for weeks, on the latest re-export of the FBX, objectX has flipped it's normals in Unity. The object shows just fine in an STL Check in MAX.

I have tried flipping the normals in MAX (so they are wrong) and re-exporting the FBX to Unity and the normals are still flipped in Unity.

If I export the objectX by itself as an FBX to Unity... the normals are proper.

Clearly this mesh has somehow developed a case of flipped normals and I can't get them to correct in Unity.

Any idea how to get the object's normals flipped to show properly again in Unity?

Thanks for any ideas!

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m_truly · Apr 06, 2016 at 10:27 PM 0

Also... if I select objectX and do a 'Revert'... the object returns to it's original state and the normals show properly... but the rest of the entire FBX seems to be reverted and I'm not sure how much work I would have to do to bring the entire FBX back to where I had it.

Just wondering if there's any easy way to fix just objectX?

If I deleted objectX... it says I will break the prefab. Is it possible to put the prefab back together?

Thanks again.