3 ms·
> Quake III's fast inverse square root algorithm Carmack did not invent that trick; it had been around more than a decade before he used it. I remember reading
by tasty_freeze 3y ago
> Quake III's fast inverse square root algorithm
Carmack did not invent that trick; it had been around more than a decade before he used it. I remember reading a Jim Blinn column about that and other dirty tricks like it in an IEEE magazine years before Carmack "invented" it.
https://en.wikipedia.org/wiki/Fast_inverse_square_root https://en.wikipedia.org/wiki/Fast_inverse_square_root
- Michelangelo11 3y agoYes, you're right -- I dug around in the Wikipedia article, and it turns out he even confirmed in an email it definitely wasn't him: https://www.beyond3d.com/content/articles/8/ https://www.beyond3d.com/content/articles/8/ Thanks for the correction, edited the post.