Here's my latest video tutorial covering the refraction shader in Toolbag 3.
Find more Toolbag tutorials here: https://www.marmoset.co/category/toolbag-tutorials/ and the rest of the Getting to Know Toolbag 3 series here: https://www.marmoset.co/posts/getting-to-know-toolbag-3/
Getting to Know Toolbag 3 | Ep. 7 Refraction