Shader Z-Fight Offset

An article by mgear    No Comments

(screenshot with Quad mesh placed on top of Plane with raycast hit.point)

If you want to use Raycast hit.point to place quad on a flat surface, it will most likely create Z fighting issue..
You could add position offset by hit.point+Vector3(0,0.1f,0),
Or use modified shader to add offset:

Tags {“Queue”=”Transparent” “IgnoreProjector”=”True” “RenderType”=”Transparent”}
LOD 100

ZWrite Off
Blend SrcAlpha OneMinusSrcAlpha
Offset -1,-1 // This line is added to default Unlit/Transparent shader

Offset: “This allows you to force one polygon to be drawn on top of another although they are actually in the same position”

https://docs.unity3d.com/Manual/SL-CullAndDepth.html