You’re hitting on something similar to what’s been discussed in this thread. I noticed too that the procedural displacement doesn’t seem restricted to vertical (or pure face normal) direction. I don’t see the effect that strong in your image but I did notice it could get pretty strong when I played with the material in my scene. This ability is surprising but I’m glad it’s possible because it offers more interesting results depending on the situation.
I don’t know exactly why it functions this way since I also expected it to only work in the pure normal direction. Though I’m glad I now know that the displacement node negates this. Someone else was asking about the displace node and why I didn’t use it. Now I have a reason 🙂
