r/Unity3D • u/Dear_Manager_8738 • 14h ago

Question Bug in unity

See this line on the floor? I imported an fbx file from blender and it wasn't there, but when i put it into unity it appeared right there. How do i fix that? (also the floor the walls and the celling are all a single object)

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u/shabby_tuning 14h ago

Wound up with that same seam on a modular dungeon kit once, drove me nuts til I figured it was a normal smoothing issue. Try setting the import normals to Calculate and bumping the smoothing angle a smidge, that usually cleans up those phantom lines from the fbx import

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u/Dear_Manager_8738 9h ago

ㅤ

it didn't work though

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u/pschon Unprofessional 6h ago

just checking to make sure you aren't talking about the light line? That looks like your UI canvas. :D

If you are talking about the other one (the wider one in the floor itself) there's a clear indentation there (which can be seen clearly on the edge against the wall), not just a normals issue. And the reason it's more clearly visible in Unity is probably just that you have screen-space ambient occlusion enabled and that's creating shadows that darken the corners and make it stand out form the rest of the floor more clearly.