Real-Time Animation of Realistic Fog

Fog introduces a high level of realism to computer graphics. But fog is often simulated by uniform density when real fog is always much more complex. Its variable density creates beautiful shapes of mist what can add a realistic ambience to virtual scene. We present here a new algorithm to render such complex medium in real-time and propose a mean to design non homogeneous fog using chosen functions. Then we take advantage of fog properties and of graphic hardware to achieve fast rendering. We also present a method to integrate wind effects and fog animation without expensive cost in time.