Displacement is not working properly in cycles rhino 7

Rhino
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1

Hello everyone,
the displacement map in rhino 7 cycles is not working as expected, the maps were downloaded from www.cgbookcase.com and imported into the physically based material properly through the “map autoupload” button of the material editor.
when I change the displacement height value in the material editor the preview is correct but when applied on the plane it’s not. The plane only shifts along the Z axis without differentiating the height point by point but keeping the overall planarity as if the mesh was not subdivided at al.
Is there an option to activate to make the planes behaving as expected with displacement maps?
see the attached images for reference.

aaa
aaa547×778 118 KB

displacement 0
displacement 01112×899 149 KB
displacement 200
displacement 2001298×770 120 KB

2

maybe the plane is just an extrusion object instead a normal surface?

3

When you apply to a plane you’ll have to make sure the render mesh for it is very dense. Otherwise there’s only 4 vertices that are getting displaced, resulting in what you see.

no custom render mesh

Tweaking the render mesh settings on the plane:

tweaking custom render mesh settings
tweaking custom render mesh settings968×523 152 KB

rendering with custom render mesh
rendering with custom render mesh1259×400 153 KB

_ShowRenderMesh

render mesh showing
render mesh showing658×797 235 KB

And a bit more extreme displacement (:

extreme

4

I see, thank you very much indeed!

5

And for fun bumped density all the way to 3 million polygons:

image
image1253×788 399 KB

6

Hi Nathan.
The granite looks very good.
what would be the mesh setting for the “all the way” density

thanks a lot
Akash

7

Settings as above, but with maximum edge length set to 0.05. What you need to pick for your use case depends on your model unit settings and the size of your surface. This one is mm and roughly 90mmx90mm plane.

8

Hi Nathan,

What happened to the surface of the sphere in this one?

Jeremy

9

Oh, I just increased a tiny bit roughness, and added a bump texture (:

10

Thanks, glad to hear it was deliberate and not a side effect of increasing the mesh density!