Active Stereo 3D Quad Buffer (OpenGL or DX)

Unity Engine
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1

Hello Guys,
Is there any way to get Quad buffer stereoscopic camera on latest Unity versions ?
I have a powerwall with 3D projection system and would like to use it also with a few Unity apps.
As far as I know Unity stopped the quad buffer rendering support after version 2019, somebody else had a similar need and found a solution ?

2

this is best solution for caves,
https://www.middlevr.com/

3

I know MiddleVR for caves, but for a simple Powerwall I would like to do it entirely with Unity without adding third party software