Hi, I’m Xor. As a graphics programmer, my job is essentially to make pixels prettier using math formulas. I work on video effects like lighting, reflections, post-processing, and more for games and animated backgrounds in software. For fun, I like to unwind by writing compact little shader programs that fit in a “tweet” (280 characters or less). You may have seen some of these posted on X/Twitter. The process of shrinking code while maintaining its functionality is called “code golfing.” Here’s ...