LiveCode Forums.

https://www.macintoshrepository.org/146 ... director-5

"The first Director release under the Adobe brand (v. 11), released after a gap of four years, featured DirectX 9 and Unicode support and extended 3D capabilities based on the NVIDIA PhysX engine . . . "

Yep, that's when Director picked up 3D stuff as part of the package. Before that, there was some guy who sat down and wrote out the engine that was open source (well, you could see what was going on with the code) which would be useful for building in Livecode as it would be a cut and paste and line-by-line check/ translate... It was pretty rough though. We're talking 90's 3D on 90's tech!
Dreams, dreams...
XdM