I wrote my own raymarching implementation that that uses an HDRP custom render pass, but would much rather use this project for the additional features. :)

Hey Beau,

It currently does not support HDRP. I was waiting for HDRP to settle down and become stable. Do you think it'd be relatively easy to port? I'm curious :)

Will it support URP? It should be pretty stable now. 

We don't currently have plans to update the toolkit for URP.