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Question by Alismuffin · Oct 06, 2011 at 09:03 AM · fbxmaya

My FBX models have only One side of each face visible

Hey guys. I am trying to import FBX models into unity from Maya 2011. Everytime I do this, one side of each face is invisible. What I would like to know is:

A) Is there a way of having both sides visible?

and

B) Is there a way to swap the side that shows up?

Thank you!

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avatar image Alismuffin · Oct 06, 2011 at 08:59 AM 0
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Ok I worked out question B:

Using maya, reverse normals

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Answer by syclamoth · Oct 06, 2011 at 09:08 AM

Because of the way that 3D models are usually drawn, the 'backfaces' of objects are invisible to reduce rendering time. If you really want to see the back-faces, you can use shaders which have the 'cull off' directive in them- this disables automatic backface culling. To my knowledge, none of the inbuilt shaders in unity do this, but it is not that hard to hack an existing shader with this line.

When you are modelling something in maya, it helps to enable backface culling, so that you can see what your normals look like before importing it into Unity!

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avatar image Alismuffin · Oct 06, 2011 at 09:21 AM 0
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Thanks a lot! It makes sense :)

Appreciate the help

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Answer by kirschjanosmark · May 16, 2020 at 12:46 PM

In blender you go to edit mode -> shading -> and at the normals: Recalculate, that should solve the problem. :)

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