HTOA shader override on alembics and standins, what would be the right way to set it up?

[christophejeudy]

Hey guys,

I'm trying to set up shaders overrides in a scene. I'd like to override the surface of some objects but not the displacement.

I tried to use a set parameter node in rop and typed :

shader = '/shop/cool_grey/standard_grey'

But it doesn't work.

What would be the right way to set this up?

[Stephen.Blair]

You can use Assign Material, that makes it easier.

With set parameter, you have to make sure the shader is exported to Arnold (with Forced Materials).

[christophejeudy]

Thank you very much for your help. Basically i made a simple scene with a character, a floor and a light. I made 3 takes. 1 for the environment, 1 for the character and 1 for the shadow. I use an assign material to override the floor material with a shadow matte. How could this override be only applied to the shadow take ? I didn't quite get hhow to export to arnold (with forced materials) thingie.

[christophejeudy]

I found the solution actually not using takes and rather setting up multiple render nodes with their own overrides . My problem now is that I'm trying to apply a shadow mate to a terrain with loads of standins scattered on it . I gave a visibility = 254 (primary visibility=0) to an object casting shadow and assigned a shadow matte mtl to the arnold procedurals containing the scatters and the terrain underneath but it doesn't seem to work. Would you have any idea by any chance?

[christophejeudy]

Sorry for the late reply, thank you for the help, that did the trick !