We've all got those little habits we've picked up in writing our shaders and materials over the years. You heard it from a friend who heard it from a friend that you should always try to multiply instead of divide. You think you remember someone telling you to use a LUT instead of a polynomial. You've always packed your floats into a vector before you do math on them. It's time to put these assumptions and firmly-held beliefs to the test! We'll look into the source and theory behind some common shader dogma, and put them to the test with the power of the Unreal Engine.

https://gdcvault.com/play/1028185/Inv...