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
Travis Davids is a 3d artist from South Afriсa, who builds some awesome stuff and eagerly shares his knowledge with the community. He’s got tutorials and a lot of freely available packs for users. Most recently his Photogrammetry Rock Pack TOOLKIT got some love on the social media and we’ve decided to feature it here.
Basically, you can grab it from Cubebrush and Gumroad. The pack contains 9 photogrammetry scanned rocks, 7 custom rocks that were created by combining rocks together, 9 rock alphas, 1 IMM ROCK BRUSH that contains the high poly of each scanned rock. You also get 2 tutorials, showing you how to make something interesting out of these elements. The tutorial shows, how to quickly unwrap and texture these rocks with Substance Painter. To make the whole thing work, you really need to buy ZBRUSH 4R8. Travis also promises to add all the other rocks he will scan here for free.
These rocks will work for close-ups, mid-range and long range shots. The standard photogrammetry rock texture is mostly good for mid to long range. Not sure you’ll be able to use these for game environments, but it will definitely work for CGI projects.