Hi!

I'm trying to build a little tool to generate textures for diffuse roughness and metalness. (A simple version of substance painter.)

I use something like “op:/geo1/cop2net/nullout” in my texture slots in a principled shader to access texturedata from a cop2net.
The cop2net loads 2d volume textures that I create in sops.

Everything almost works. But I'm having a really hard time to get the textures to update in the viewports.
To get it to update I have to manually go into the principled shader and turn textures on and off for each slot. A real bummer, I wanted to be able to get interactive feedback.

Is there any way to force the material to update?

Attached a simplified version of my problem that should make my problems evident.