I have same geometry assign with different material. The left is with silver material form old houdini gallery and the right is with mantra surface(material shader builder).

However, the reflection on right has checker pattern artifacts correspond to geometry. I have no clue how to solve this.

Please Help !!

hi ,

from ‘ far ’ , it looks something similar to what happened to me too :

http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&t=21333&highlight=specular [sidefx.com]

hope it 's the same and you can resolve it !



.cheers

hi, zarti, really appreciate your help. That totally resolve my problem, although the shading does look different like you mention on the other post, but I can work from there.

Thank you so much :wink:

I know this is a super old post but ….


The solution to this problem is in the shading network parameters of the surface model- change geometric tangents to object space tangents. It occurs when specular anisotropy is on.