How to fix mirrored normals

anonymous_user_5afabe73
Mon, 07 Aug 2017 11:36:54 +0000
Rendering

I exported a model from Blender and I mirrored it completely so it can share both the texture and normal map. Now the seam is visible and the other half’s normal in engine is upside down. I’ve tried this solution: Normal map is inverted when using mirrored geometry - Rendering - Epic Developer Community Forums but It did not work so I assumed it’s outdated in some way. My attempt:

I wasn’t even able to see a difference changing to clamp or anything.

How can I fix my models without having to resort to doing clamping and logic in the material itself?

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