Hide part of object base on camera position

Unity Engine
1

Does anyone have idea to make it?
Customer shader for the sphere:

  • Hide all face behind the sphere
  • Hide the sphere too

1393198--71812--$hidepart02.jpg
1393198--71812--$hidepart02.jpg1169×454 73.7 KB

2

Render it just to the depth buffer.

3

You can do this with:

ZWrite On
ColorMask 0

Also make sure you render your depth-only object in an earlier queue than whatever it is supposed to mask.