DisplacementProblem

[mgr0704]

This is probably something I am overlooking, but I can't figure it out. I have a cube with a brick displacement map on it. It renders in Arnold as one would expect. If I add another object, in this case a sphere, I lose the displacement on the cube. See files attached. I have tried it in Maya 2018 and 2020. I am on a PC running windows 10. Any ideas what I am not seeing?

[Stephen.Blair · Accepted solution]

You didn't see the warning in the Arnold log.

00:00:42  3758MB WARNING |  [disp] /wallNew/wallNewShape: padding is at least 10x smaller than it should be! given disp_padding: 0, recommended: 0.234954655

 You have to set the bounds padding on wallNewShape.

[mgr0704]

Thanks Stephen. Did not see that warning, but why does it only matter if some other object is added to the scene? Otherwise it displaces properly.

[selvakvigneshmaya]

can oyu explain what it means

[tiarne_crimmins]

I am trying to apply a displacement map exported form Zbrush and importing to Renderman. However I am getting a weird artefacts where there gaps everywhere. The map is a 32bit exr and looks completely fine in the file. I have also put the UDIM padding in there too and its still funky. I have tried both scalar and vector, they produce the same result.