https://docs.unity3d.com/Manual/SL-Stencil.html I've been posting a lot on this topic and I think it's because I'm trying to find a method that best suits my needs for getting some kind of influence map setup for my game. The problem I have is there are solution that do sort of work but they don't achieve the effect I want exactly or if they do work it is incredibly complex and expensive for the effect I'm trying to make. So I thought, well if it works on Opaque, wouldn't the simplest answer be to either make an Opaque shader transparent or have a transparent shader behave like an Opaque so I can achieve the stencil effect I want without having to do anything ridiculous? The example I'm looking at is the green and white spheres down below at the end of the page except of course I plan on having the same colours blend in with each other. The reason I want to have these spheres transparent is so that the player can see everything inside and interact with things within the spheres so I need to find out whether it's possible to do this. I guess now I think about it more rather than doing anything complicated the best way may actually be to make the Opaque see through somehow and sort of trick it into behaving like a transparent shader but not if that makes sense.