unity_worldtransformparams.w
https://forum.unity.com/threads/what-is-tangent-w-how-to-know-whether-its-1-or-1-tangent-w-vs-unity_worldtransformparams-w.468395/
https://forum.unity.com/threads/what-is-tangent-w-how-to-know-whether-its-1-or-1-tangent-w-vs-unity_worldtransformparams-w.468395/