This video goes through the process of using Unreal Engines Post Processing to enable Raytracing. It also goes through how to fine tweak your Glass Shaders to get them to look realistic.
In this tutorial, William goes through the process of setting up Raytraced Translucency and Refraction within Unreal Engine 4. Unreal Engine's Post Processing can use Ray Tracing to further enhance Glass Shaders with the power of RTX.
The tutorials is broken down into several components which takes a look at Post Process Volume Settings, Unreal Engine Material Setup, looking at real-world glass examples and more.
Check out some of the other great tutorials on CGHero.