Hi,
I am looking for alternative to Piranesi sketch render that works in Rhino. Last week I downloaded Penguin however in real time material colours does not seem to work. It appears only when I start rendering. Is it a demo restriction or a feature.
Well, that’s because Penguin in a rendering plug-in.
If you want something more ‘real time’ you might consider a custom display mode.
Here are a few you can use:
https://wiki.mcneel.com/rhino/advanceddisplay
Simple Bright might get you close.
– Dale