I want to control a traffic light. As easy as possible.
So i have 3 objects with emitters and i would control the strength of the lights by 3 variables/custom attributes: Red, Yellow, Green - which basically just hold the strength value for the emitter color.
But if i understood it correctly i cannot get custom attributes from shader editor/nodes. Is that correct?
I could now use drivers to copy my control variables to my 3 objects in e.g. the viewport color and use them.
But...it there another way? If yes, I would like to hear that!