[eru]

In fact that exact line of thinking was behind an effort to rewrite Firefox's rendering to be more like a game engine, a few years ago.

Not sure where that went in the end.

[TazeTSchnitzel]

It's called WebRender and it shipped in Firefox.

[DaoVeles]

That sounds like something from the shuttered Servo team. At least they rose like a phoenix - https://servo.org/

[eru]

Yes, that sounds about right! I remember a series of very interesting blog posts by them.