Seemingly if you install the upstream amdgpu drivers on your system they end up in /opt/amdgpu …
apparently a deb based system picks that up fine (i guess the upstream driver installer mangles the correct alternatives here)
but since snapd will only provide standard locations for the GL drivers and libs inside the confinement area users using the upstream drivers are out of luck using any GL based snaps. Would there be any way to make it work for these users too (apart from having them bind-mount half the world over the distro libs/drivers) ?