Source: ID Software

Who doesn't know Wolfenstein 3D? The historically accurate, multi-genre, several billion polygon adventure from 1992. 😶 John Carmack's and John Romero's very own Glory-Forever-Machine™.

But do you know what FizzleFade is?

That's the algorithm that does the screen fading when you either die, or kill a boss. And it's a tricky one, because it looks random, and has to turn around all the pixels on the screen within a constant time.

Thinking about it, the problem behind it is not necessarily trivial. Neither is FizzleFade. Jaco Pretorius picked up the initial work of Fabien Sanglard - to be found here - and walks us through the details.

Exciting article and quite a bit to learn.