Export Materials from Maya to Houdini Solaris

[elveatles]

I can't quite figure out how to export materials from Maya to Houdini Solaris.

In Maya, I've tried Arnold > Scene Export > Export Selection to USD and only leave the Shaders checkbox checked.

Then in Houdini Solaris, I create a Reference node and choose the file path of the materials.usd file I exported from Maya. The Reference node gives me the warning:

Referenced one of several root primitives: <path/to/materials.usd>

It also seems that, when exporting from Maya, it's not possible to parent all Arnold material nodes under a material Scope Prim in an attempt to appease Houdini's warning.

What's the recommended way for transferring Looks from Maya to Houdini Solaris?

[Stephen.Blair]

If you export shapes and shaders, and put in a prefix with a trailing slash (for example, "example/"), then you'll get a file you can reference.

[elveatles]

Thanks Stephen. Although it's a step in the right direction, it still doesn't work.

At least I can see the USD scene graph in Solaris, but rendering it looks like there are no shaders assigned to the geos. Everything has a default light gray color.

The way the materials are organized is also a bit of a mess. Every material node that was used is under the /example/ Prim. So every file node, every color correct, etc in a long list. I guess this is technically accurate to where the nodes are in Maya, but still kind of hard to find anything when using large shader networks.