So I modelled a gun model for my game in blender, and after importing it in Unity one of the faces simply disappeared as you can see in the link below :
You can select it and choose "flip normal" in edit mode. Or just choose "recalculate outside" with all faces selected.
As an alternative to "Face Orientation", you could enable "Backface Culling" which is what Unity does by default (unless you enable the material to be "double sided" or play with the Cull type in shader.)
This will hide the problematic face as you are looking against the backside. Fly inside the mesh and you will see the other side being rendered.
CodePudding user response：
I did all that. I checked the "face orientation" option and the concerned face was blue (so facing the right way). I did try flipping the normal anyway and it didn't work. I did check backface culling in blender, and the face disappeared. After recalculating the normals the face reappeared in Blender, but when I tried to import it in Unity the problem was still there. I don't know what to do anymore.
CodePudding user response：
The problem is solved in four simple steps:
- Click model on blender
- Press Tab to Edit Mode
- Press Shift N to Recalculates Normals.
- Save, Export from blender and going to unity again will fix.