Shadow only material in cycles

Hi there is anybody actually working on a Shadow-Only material in cycles?
And yes, I know the workaround withe the render layers and the compositor- and I dont like it!
I would be soooo great to have Material which is actually doing this!

Lukas Stocnker is working on it. It’s not a simple problem.

Thanks for the answers- intersting, does Lukas already have anything to test?

@dito,
Thats really a nice little workaround :slight_smile: actually quite awsome- but not really what I need.