Windowed Fullscreen SimpleHMD

Heyyas, I’m working on a HMD plugin for a 3d projector. I’m wanting to run multiple of the client across 2 screens, and I’m requiring to change something, as Fullscreen windowed mode doesn’t have any mention.

There is Windowed mode, and Fullscreen mode, just not fullscreen windowed as far as I know, anyone help? Thanks, Litruv.