I was wondering if it somehow possible to get the shadowmap into the materials and do something with it. Or someone knows how to fake shadow cast within a material.
What I want to do is:
I noticed one sunny morning that the dust on old wood is lit, it looks really fuzzy and velvet, while in de shadow area and self shadowing area the same wood doesn’t look fuzzy.
It kind of makes sense that the very tiny dust particles are lit and gives this velvet cloth like shining.
I know that I can try to use fresnel to fake this behaviour and use some math to remove the fresnel from the self shadowing part, but the fresnel remains on the casting shadow area.
Any tips, tricks etc on this approach would be helpful!
Best regards! Tom