Real-time simulation of snowing scene

Realistic simulation of natural scene has been one of the most challenging tasks in compute graphics. And it is even more difficult to real-time simulate snowing scene because the complex modeling of wind field and the interaction between wind and snow are involved. In this paper, based on the fully consideration of the physical characteristics of wind and snow, a three-dimensional wind field is constructed by discretizing the classic Boltzmann equation. According to the interactive laws between wind and snow, the changing rules of snow's falling, deposition and erosion are then established. Finally, by adapting a series of simplification and accelerating rendering techniques, realistic wind-driven snow scenes under different speeds of wind with different snow falling amount are rendered in real time.