Century Age of Ashes : Valkürian Sanctuary - Volumetric Fog

When I heard we will be working on a map like Valkürian Sanctuary, I directly thought how cool it would be to have some volumetric clouds.
At that moment, I was following the work of Asher Zhu, and he was working on a really cool volumetric fog shader.
After a moment of R&D, I finally found something that could work well for the map.
The way it works is to sample a 3D noise texture with different scales and noise type inside the RGBA channels.
By adding these noises on top of each other in 3 dimensions, we create a volume that looks like fog.
It's a lot of parameter tweaks before having something that looks nice, but really fun to play with.

Same as the other posts, I wasn't alone to make this beautiful environment.
Here are my art teammates involved.
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Art Director : Pascal Barret
Concept Artist : Mathieu Boyer
TD Rendering : Frederic Cros
Lead Environment Artist : Brice Besson
Environment Artists :
Corentin Schwedt
François Dumoulin
Raphaël Thiessard
Thomas Chevenne
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https://www.artstation.com/mathieuboyer
https://www.artstation.com/bricebesson1
https://www.artstation.com/frozz_tiz
https://www.artstation.com/bubar
https://www.artstation.com/raphael_thiessard
https://www.artstation.com/athoms