Physically Based Shading

One of the best SIGGRAPH courses in recent years has been the Physically Based Shading Course. Here are links maintained (mostly) by Stephen Hill:

Physically Based Shading at SIGGRAPH:

Take particular note of the 2012 notes on Brent Burley’s presentation of Physically Based Shading at Disney which has been much referenced. Also, note the 2012 and 2013 presentations on OSL as well as the 2013 presentation on Real Shading in Unreal Engine 4. Lastly, note the talk on Bi-Directional Path Tracing at Pixar from 2016.