Is it possible to connect multiple HMDs to one PC?

Is it possible to insert two HMDs in one PC and correspond each camera in the VR space?

I　want to make the VR content that two players experience in the same VR space while watching each other 's avatars.
I would like to know the implementation method other than synchronizing with PhotonEngine on two PCs.
HMD is considering Oculus Rift or HTC VIVE.

 

The Oculus runtime supports only one HMD per PC. I know nothing about the Vive platform, but a quick Google search suggests to me that while it may be possible to run multiple HMDs on a single PC, it isn't simple and is very taxing on the PC.

There's a video of a fella running both a Rift and a Vive on one PC with a single graphics card. He doesn't show the game actually doing anything other than running, so there's no indication of how performance would be. I suspect it's a matter you'd best leave alone, though, and pursue standard multiplayer instead.

 

You would do this via networking not physically attaching to one pc