The author explores the challenges and complexities of creating a high-quality texture-based grid shader in real-time rendering. They discuss the limitations and issues with existing grid shaders, focusing on perspective thickness, aliasing, Moiré patterns, and line fading in the distance. The author experiments with different techniques, including the filtered pulsetrain and box filtered grid functions, to address these challenges. They ultimately develop a phone-wire anti-aliasing technique that effectively maintains line thickness and eliminates aliasing, creating a visually pleasing grid shader with perspective and minimal interference. The author’s in-depth analysis and innovative solutions offer valuable insights into shader development.
https://bgolus.medium.com/the-best-darn-grid-shader-yet-727f9278b9d8