3 guys wrote the world's first game that rendered a truly three-dimensional world, and they did it in software, and it ran at 20+ frames per second on my Pentium 75. It's not quite correct to talk about Quake the way you would talk about almost any other software project.
BTW, if you're curious, Abrash goes into greater depth at the end of his "Black Book of Graphics Programming", which I think is now freely available online.
BTW, if you're curious, Abrash goes into greater depth at the end of his "Black Book of Graphics Programming", which I think is now freely available online.