I'm trying to hide an object in a hole, after searching for a solution, I followed this example & successfully create a hole:
https://stemkoski.github.io/AR-Examples/hole-box.html
But when I placed an object inside, it's overlap the hole, instead of being covered behind the faces (image 3)
Image 2 is what I want to achieve but haven't found a way so far.
I tried with clipping & masking (postprocessing) as well without success.
It would be great if someone could give me a clue.
I found this, it's exactly what I'm looking for, but the source was removed.