Question How to add support for Single Pass Instanced Stereo Rendering Mode in my custom HDRP/Lit shader?

I have created a hair shader taking as a base source file from HDRP/Lit shader.
But it displays in VR hair correctly only in Multi Pass mode. I have found a Unity documentation how to change custom shaders to support for Single Pass Instanced mode, but documentation is outdated and is written for old shaders (CGPROGRAM)...
DOC: https://docs.unity3d.com/2019.3/Documentation/Manual/SinglePassInstancing.html

 

Now it works.
After I installed new SteamVr XR plugin and then deleted it...