Photoshop and Eye Candy 4000 required
Of course this is not real "snow" from any render, I just slapped some blue on
a test picture in photoshop. Then I drew a selection in a crude shape of a
bear paw print to test my idea....and I feel it worked!
3 different lighting directions gave three different looks to the "prints".
I have an upcoming snowy
panorama scene that will have a lot of animals in it, and just could not imagine it
without the detail of footprints! - Hence the desire to try and invent a way... :)
This may work in other programs with a bevel, but I can only show what I did with
the software I have.