This is a link to my in-progress Optix Prime / Optix RTX path tracer:

https://ompf2.com/viewtopic.php?f=8&t=2158

This also happens to link to the ompf2 forum, which is a great place to find information on ray tracing and related topics, accumulated over the years by many wise members of the community. Now on a new host, with new features such as Latex in comments and embedded media. End of shameless plug.