Given a number of dupligroups, is there a way to get a unique random value for each one in a cycles shader?
Using the object info node won't work, as each instance consists of multiple objects. I'd like the value to be the same for all objects in the group (in this example, the pedestals ought to be the same as the corresponding Suzanne).
Here's a demo file:
If possible, I'd like to do this without joining objects or de-instantiating the dupligroups.