Fun fact, I used to work in the Graphics Products Division of STMicroelectronics who developed the Kyro chips. The plan was that the STG4k series (Kyro I & II) through to STG6k would use licensed PowerVR technology, but the STG7000 was going to be built using our own technology/IP. I was hired despite no professional graphics or C/C++ experience (only personal projects) to work on the OpenGL drivers.
When the whole industry took a downturn in 2001 the department was largely seconded to other projects in the business that would be more immediately profitable but I was kept on the small team keeping the STG7000 project alive; until it became clear the writing was on the wall for the division so I moved on. The division was officially shut down in 2002. Those were the days though...
We were all given a Kyro II card which I did use for quite some time but eventually sold a couple of years later, to my eternal regret.
I still have all the code and documentation I wrote (and more) from that time. I did have the somewhat crazy thought to get a Win2k development environment setup and get it all recompiled. Maybe even look at getting TempleMark to run on my recently acquired system with its Voodoo 4 (doesn't start due to lack of EMBM).