OpenVR-friendly mirror system for Unity.
Updated to work with Unity 5.4. Special thanks to Creo for providing a stereo shader technique.
Updated to work with Unity 5.4.0b24 / SteamVR 1.1.0. Special thanks to Jiman Andrei for eyeOffset & resolution fixes.
Updated to work with Unity 5.4.0f1 / SteamVR 1.1.0.
Updated to work with Unity 2017.3.1f1 / SteamVR 1.2.3.