Folks, I'm confused. I'm a moderately experienced Unity dev just starting with HDRP and I'm having trouble figuring out what documentation I should be using and if any of my old shader knowledge is applicable. Is it possible to write a vertex displacement shader for HDRP in code, or am I required to use Shadergraph? Can anybody point me towards useful documentation they've found on these topics? Very much appreciated, I'm not entirely sure where to start with this topic.