Not a single word about Renderman?!!
Before GeForce 3 was a thing, those of us with access to NeXT machines already had a blick what would mean to write shaders.
https://en.wikipedia.org/wiki/Pixar_RenderMan
https://en.wikipedia.org/wiki/RenderMan_Shading_Language
"The RenderMan companion : a programmer's guide to realistic computer graphics.", 1990
I am also missing 3DFx's work on shading languages before they got acquired by NVidia.