The programmer worked at the company from February 2020 to April 2023. He had this on his LinkedIn:
Rockstar Games
-Took lead on the next generation procedural
breakable glass system for vehicles and props
-Was responsible for designing tools for
production to capture in-game footage with
extra details from our rendering system
-Fixed and improved various rendering
systems-Took lead on the next generation procedural
breakable glass system for vehicles and props
-Was responsible for designing tools for
production to capture in-game footage with
extra details from our rendering system
-Fixed and improved various rendering
systems
He has since removed the info from his LinkedIn profile (probably got a DM from Rockstar HR lol, so it's a good sign that this is real)
AFAIK Fully procedural glass tech for vehicles and props would be something way beyond what we've seen in GTA V or RDR2 where glass destruction was "pre-baked". The dev's entry suggests that GTA VI's procedural system calculates unique dynamic cracks and shards in real time based on the exact impact force and angle, so it'd look far more advanced and realistic. Probably something akin to Half-Life: Alyx or The Finals.