I used old version of Unity (5.4? maybe even older) and tested it on both Google Cardboard and Oculus CV1. It used to have separate cameras for left and right e

I used old version of Unity (5.4? maybe even older) and tested it on both Google Cardboard and Oculus CV1. It used to have separate cameras for left and right eye. Unity has a system of layers and every camera has a bitmask that defines which layers are rendered by it. So I simply left environment on default layer rendered by both cameras, put one copy of an object on 'Left' layer and another copy with different material on 'Right' layer. Worked really nice for "vampire" eyes (specifically irises) rendering. Few years ago they switched to single pass stereo rendering to avoid rendering whole scene twice. In theory this legacy option to use two cameras is still there, but quick googling says that it has some issues on modern Oculus SDK's and new Unity render pipelines but workarounds are possible. https://forum.unity.com/threads/right-eye-black-for-urp-on-quest.785216/?_ga=2.240617926.410097421.1581197907-1098139994.1581197907 https://forum.unity.com/threads/right-eye-black-for-urp-on-q... https://forums.oculusvr.com/community/discussion/90660/unity-xr-management-and-right-eye-rendering-issue https://forums.oculusvr.com/community/discussion/90660/unity... https://answers.unity.com/questions/1534621/vr-how-to-render-gameobject-in-one-eye-only.html https://answers.unity.com/questions/1534621/vr-how-to-render...