Odd Banding / Stair-Stepping / Aliasing Issue with Substance Designer Material Render

aclund3

This is a material I created in Substance Designer.  I exported the texture maps and created a material in MT3 thrown onto a flat plane. Seems simple enough, and the image above (res downsized for web) looks OK, buuuuuut...

Look at this center crop:


What is that all about?

Looks almost like 3d printer banding stuff... the bands generally seem to run perpendicular to the camera in Marmoset.  I don't have the issue with an Iray render in SD.  And, I don't see a problem in the textures I exported from Substance Designer either.  All this leads me to think I'm doing something weird in Marmoset, but I can't seem to figure out what that might be.  Any ideas would be greatly appreciated.  Much thanks in advance!

A3

EarthQuake

You probably need to increase the amount of geometry on the mesh so that it can do a more detailed displacement.

aclund3

Thanks for the idea, @EarthQuake!   I tried increasing the polys on the plane, but it didn't remove the banding

EarthQuake

aclund3 said:

Thanks for the idea, @EarthQuake!   I tried increasing the polys on the plane, but it didn't remove the banding

Can you post a screenshot showing your material settings and wireframe view of the plane mesh?

aclund3

I sure can



This is with the increased mesh geometry, it was initially just a 4 vertex plane.

EarthQuake

Ah I see, thank you for the image. It looks like you're using parallax mapping rather than displacement mapping. So do this:

1. Change Surface to from Parallax to Normal
2. Change Displacement to Displacement, and load your height map
3. Change Subdivision to Flat, and adjust the tessellation slider as needed

aclund3

Ah, thank you, @EarthQuake!  That's totally it   You're the best!