Displacement Geometry does not work with nested textures

[sam_wolk]

Hi,

Sorry for posting so many questions… I think this is a bug, unless I am missing something obvious?

The object on the left: using a Displacement Geometry with a Noise A texture for the displacement map. Applied it to a plane, works fine. Great.
The object on the right: using a Displacement Geometry with a Noise A texture for the displacement map; however, a circular Gradient texture for the map was applied to the color B parameter of the Noise A texture; this displacement geometry was applied to another plane. The displacement geometry shows up on the plane a bit like a bump map, instead of displacement - i.e. it looks like it is casting shadows on itself, but it is completely flat, even if the displacement amount is cranked extremely high.

Rhino file here.

[slavcho.brusev]

Hello,

Thank you for your post!
This is a known issue (ref num WEBUI-4337).
As a workaround please use 2D displacement.

[konstantin_chaos]

Hi sam_wolk,

Let me clarify what Slavcho said a little.
The real issue here is the Gradient texture.
Your setup should work just fine with any other map.
You can also replace the procedural gradient with a bitmap alternative.

I’ll revisit this issue and we might be able to find a V-Ray-side solution for it in the future.

Regards,
Konstantin