This is wonderful news, and my sincere thanks to the author. I remember coming upon this algorithm several years ago, and thinking it was extremely elegant and very appealing, but being disappointed by the patent status making it unusable for FOSS work. I really appreciate the author's choice to dedicate it to the public domain after a reasonable amount of time, and congratulations on the success it had while proprietary!

Now if I ever get around to writing that terminal emulator for fun, I'll be tempted to do it with this algorithm for the code's aesthetic appeal.

His latest project is https://radicalpie.com/

A Professional Equation Editor for Windows 10/11 for 60$ that uses Slug for rendering. Presumably he‘s using it to write his great FGED books.

Love it when someone who makes complex, helpful software is rewarded for their efforts. More stories like this!

Amazing! Thank you, Eric!

Damn, I worked with the author's game engine (C4) about... 20 years ago now while still in school, didn't know they were still active in that area!

Is it on ShaderToy yet? :D

Lengyel continues to be standup dude, kudos!

I am sorta in a position where implementing a glyph renderer as a compute shader would be helpful. This is a great opportunity to use this as a reference... exciting weekend project!

Oh wow this is crazy. This was a project that was reasonably successful commercially. And now it’s just being given away open source? What an absolutely incredibly gift to the community!!

Thank you for your service!

Here's an alternate if you're also getting connection reset errors:

https://web.archive.org/web/20260317185928/https://terathon....