[Intuition]

Does anybody know which was the last version of Lightscape for IRIX? I'd really love to get it (although, to be honest, even an older version would be nice to get). If I could travel back in time to 1997 when I bought my first SGI (an O2), I would say to the myself of 1997: Buy Lightscape!!! Since then, Lightscape has been like a "unicorn" to me: something people affirms that ran on IRIX, you even saw demos of its prerendered (baked) scenes on SGI Performer, but, never ever saw the actual software running on IRIX myself. Being a lover of radiosity solvers, it's sad that it seems impossible to get it nowadays.

There's very little information out there. Even in the forums, there's only one hit for it: https://forums.irixnet.org/thread-2030.html

And the most complete information I found is this: https://forums.chaos.com/forum/chaos-com...post313166 which basically says that Lightscape for IRIX was discontinued in 1996, but it doesn't say which was the last version.

Does anybody know more? Does any backup of the software still exist?

Jeez, talk about a blast from the past.... Lightscape was so niche, even in its heyday. 
There was an ebay auction for a copy at one point a few years ago. 
There is a PDF manual for it here strangely.... https://web.mit.edu/4.455/software/light...0Guide.pdf