# 2k (blogs) — RSS Amplifier Recent posts from the 1 feeds in the RSS Amplifier directory that cover 2k. Page: Feed: --- ## [Procedural UV Derivatives Evaluation in SORT Renderer](https://agraphicsguynotes.com/posts/procedural_uv_derivatives_evaluation_in_sort_renderer/) _2026-06-07 · A Graphics Guy's Note_ 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’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… ## [Understanding The Math Behind ReSTIR GI](https://agraphicsguynotes.com/posts/understanding_the_math_behind_restir_gi/) _2025-05-09 · A Graphics Guy's Note_ Recently, I had the pleasure of contributing to Nvidia’s Zorah project, the flagship demo for the RTX 50 Series GPUs. My primary role was to provide technical support for light transport in Zorah, which included collaborating with my colleague Daqi Lin to implement a brand new ReSTIR-based global illumination solution, specifically, ReSTIR PT\[1\], within the NvRTX branch of Unreal Engine. A GDC…