This video shows the rendering of my bachelor-level thesis. Everything you see runs in Real-Time (about 60-80FPS) on my Laptop (Core 2 Duo 2.66Ghz, Nvidia Geforce 9600M GT 256MB, 2GB RAM).
It is programmed using DirectX9, with Shadel Model 3.0 (C++ / HLSL).
The Technique is based on Precomputed Atmospheric Rendering: http://is.gd/aKTiLi
The system was integrated into the Vision Engine at the game studio Reality Twist in Munich: reality-twist.com/
If you have any Questions, feel free to ask or contact me.