It is the really nice thing about convex hulls that this works.
One of my very very earliest experiences with real OpenGL on actual hardware was sorting out this problem to make something like the scene of the “gibson” in the movie Hackers. Back in 2002 or so.
https://youtu.be/vYNnPx8fZBs?t=20 (note: t=20 for what I’m talking about)
All of my experience prior to that had been home-grown software renderers to it was a crash course in alpha transparency. Ah the days of the fixed function pipeline…