Well, it's more like a lot of the snow is actually physics simulation, which makes the work of animator's easier though no doubt requiring a lot of rendering time. And you can get an idea of how they did it thanks to the video below which is also quite technical.
Drop by our store if you're looking for the official art book for 'Frozen' that just released this week!
Drop by our store if you're looking for the official art book for 'Frozen' that just released this week!
