Take a look at this awesome fog effect created in Unity by indie developer Biuzer. 🤯
"A fog distribution map is rendered into a render texture, driven by lots of parameters like current humidity, wind speed, time of day, and so on, so the weather affects the fog. That map is then projected onto the world in the same direction as the camera view. For the moving 'fog clouds,' then I take the terrain height texture and erase some fog by height so this ground fog stays dense near the ground and completely disappears a couple of meters up."
Check out the original post and more of Biuzer's incredible Unity magic over on Reddit: https://www.reddit.com/r/Unity3D/comments/1qfk7zj/some_pseudo_volumetric_screenspace_fog/
