How to Fix Mesh Edge z-Fight

Questions
1

Hi everyone~
I create a custom mesh to show the direction(forward backward right left up down), I want to enable edge to display edge, but it seems have z-fight, I can’t find any api to move edge a little with normal direction. Does anyone have any idea to fix it?
Thanks for any help :grin:
This is PG :https://playground.babylonjs.com/?#ENABP9#4
This mesh is prepared to replace box in https://playground.babylonjs.com/?#HHHZZ3#8 :grin:

2

Sorry for its Chinese Notes , this pg is prepared for a series of Chinese Language tutorials. Please ignore them.

3

https://playground.babylonjs.com/?#ENABP9#5 zOffset and zOffsetUnits should do

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