Procedural UV Derivatives Evaluation in SORT Renderer

In this post, I want to talk about a topic I have been meaning to write about for quite a few years: texture UV derivatives evaluation in my offline renderer, SORT (Simple Open Source Ray Tracer), which I&rsquo;ll use throughout this post. It normally is not a major challenge. However, my own custom shading language[1] specifically designed for my renderer adds quite a lot of complexity in it. It…