Shot on a beach in Donegal, Ireland on a Samsung Galaxy S8, processed in Reality Capture/Photoshop and rendered in Toolbag 3.
Breakdown over here: https://petemcnally.com/2018/05/24/seamless-stones/
Lighting Test 01
Lighting Test 02
Gif
Lighting Test 03
Texture breakdown
Wireframe (+PN triangle tesselation)
Context render (Toolbag 3)