Help Normal Map artifacts?

Arron · Jan 2013

Hey guys, I'm looking for some help with normal map artifacts.

I've been learning normal mapping, I thought I had the idea but I'm having issues with this shelf piece I'm working on. Even with a near identical LP cage in Xnormal it gives me weird Artifacts on the left and right pieces.

Not really sure what would cause it since the face normals are not reversed and the cage matches it nicely as far as I can tell.Nothing is mirrored either.

o0out of ideas now :S

I'm using xNormal with cage selected to bake the maps.

http://youtu.be/78IdPDg05hQ

Eric Chadwick · Jan 2013

Are you using hard edges on your 90-degree turns?

Arron · Jan 2013

They were a bit random actually, don't know why I forgot to double check that bit :poly136:. I've just tried them all soft and then all hard edges and still no joy. Were you referring to the just low poly or both models?

Eric Chadwick · Jan 2013

Hard edges on the low poly, on every UV seam. Also hard edges where ever there are hard angles (like more than 60 degrees or so). Then rebake the normal map.

Arron · Jan 2013

I will give that a go and see if it helps thanks Eric.

Arron · Jan 2013

I gave that ago, didn't fix the major issue but it did clean up a few artifacts, thanks for the tip. I have managed to get a decent render from Maya using the same set up. Must be something xNormal doesnt like :S.

Help Normal Map artifacts?

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