You know I found an old post somewhere in the MAME forums I think where some users were talking about reflective bezels, and that evolved into an actual working implementation of bezels with real-time reflections.
Someone can correct me if I’m wrong but it’s quite possible that that pre-dates the Mega Bezel Reflection Shader which brought real-time reflective bezel shaders into the limelight.
So, maybe that old MAME implementation might still be lurking around out there somewhere?
https://www.mameworld.info/ubbthreads/showflat.php?Cat=&Number=353114