Sorry to bump such a old thread, but I am curious how to get this to work. I was able to add a nice snow shader to a single object, which looks rather nice, and had a nice smooth pileup. However, when I move the same method over to a population, it does not appear to work. Do I have to go in 'further' and apply to my needle shader rather then the outer shader like I did with the single object as apposed to this population?
Also, I am a bit confused on how the direction for height control were setup. For me, on a single object you can apply a limit height of '20' with a fade of 10, for a nice look, however on the population, the 'error' persists over the whole population as if there is no height control. (or I just broke the shader)
I am running the demo, could that be a issue?