While this isn’t strictly an OpenXR question, I was wondering if there was a known technique or if anyone here has experience mixing the two eye views into a single image to be shown on a flat screen? This would be used for recordings or just watching what someone else is doing. I have found that drawing a single eye on the screen looks really bad, drawing both views is disorienting, and making a third render just for this would be expensive. Any ideas on this?
I think most games just crop a region from a single eye, having it as close to the combined FoV center as possible.
The SteamVR runtime-level VR mirror supports blending the view from both eyes. It makes you pick a dominant eye, and offsets the blend to one side, so that the seam is not in the center of the screen. I’m not sure how much it modifies the view, but it must at least be translating the images to align the seam at some fixed depth.