Any sprite or smoke shader out there?

[Guest ravin]

I am working on simulating tornadoes and I am having problems in rendering. I tried the isoOffset node + billowysmoke shader method but I can see noise swimming in textures in the renders. Is there any good sprite or smoke/cloud shader available, which can give me a good looking tornado without the swimming noise problem??

thanks,

[kelvincai]

You gotta use Rest Position before the isoOffset node to make the noise not to swim in billowysmoke material. Upping the step size and sampling number also smooth the noise.

There is a spirteFog material in the Material Palette.