Tomek P

What's the correct way of referencing nodes (for example textures) from another material builder subnetwork? Arnold has Fetch node to do that. I was looking for something similar for Karma to avoid duplicating shader parts.

It works. Thanks a bunch.

As a workaround I created a Collection operator to generate empty collection and a Python node to populate collection with data. Then I made an HDA from it. Not an ideal solution, but it works fine.