I asked in class why only recently has GPU technology for real-time ray tracing emerged. There's a number of factors for why we got within striking distance of real-time ray tracing, including both having enough raw compute power (Moore's law) and improvements in ray tracing algorithms.

Even though recent RTX cards have real-time ray tracing, I have not really seen a lot of adoption of it in applications such as games, probably due to its currently low market share. When do you think ray tracing will have widespread adoption by the larger market?

There are only two generations of RTX cards that support hardware ray tracing, so companies probably need more time to integrate ray tracing into their games. But I have seen many newer titles with ray tracing support.