[eps]

Oh, didn't know about QuakeC. Shame on me.

So both the "normalize" and the improper swap are the part of the original source?

[tecleandor]

Yep, right here:

https://github.com/id-Software/Quake/blob/bf4ac424ce754894ac...

:)

[klaussilveira]

Check this out: https://fabiensanglard.net/quakeSource/index.php