I’ve been in discussion with Chaos Group about issues I’m having with their V-ray blender version (https://github.com/ChaosGroup/blender_with_vray_additions/issues/240).
It seems that their shading networks are defined using Python and it looks like drivers in that system aren’t accessible. For example, if I create a driver on their Python-defined node in the shading network, it doesn’t show up for editing in the graph editor when drivers are displayed.
They indicate that this is due to limitations with the blender python system. Is this accurate and/or known? Is there something that could be done to make this work (either on their side or in the blender code)?