This is techno-sorcery!
Unite India is here: https://unity.com/event/unite-india-2019
there is no need to create a vdb, but it works yes
YouTube user Iskander (aka kenprol) has published a video showcasing texturing process behind Assassin’s Phantom Blade in Substance Painter 2. It is a nice of example of high-quality material work with photorealistic look.
The model was Blender 2.78 and then brought to Substance Painter for some color.
The artist also has a nice portfolio with a bunch of photorealistic works. Make sure to check his ArtStation.