check into "pre-openGL 3d" and you might find some mention of their stuff, i think. this look like anything else you recall? https://en.wikipedia.org/wiki/Ultr

check into "pre-openGL 3d" and you might find some mention of their stuff, i think. this look like anything else you recall? https://en.wikipedia.org/wiki/Ultrix_Window_Manager https://en.wikipedia.org/wiki/Ultrix_Window_Manager