Since their presentation on Siggraph 2017 Unity Labs team is working closely on the Photogrammetry for game development and has created in March 2018 step-by-step guide to show how to use layered materials in HD Pipeline.

Unity 2018.1 beta introduced a preview of Scriptable Render Pipeline. With Unity 2018.1 there will be released two other pipelines: the Lightweight (LW) Render Pipeline and High-Definition (HD) Render Pipeline that provides a shader dedicated to photogrammetry material authoring name: LayeredLit. To illustrate the photogrammetry workflow and the use of the LayeredLit shader Unity team has created the Fontainebleau demo.

To learn more about photogrammetry in Unity you can check the Unity blogs here or solutions here