If you want this to render, go to https://turbowarp.org/504398851/fullscreen?turbo&stuck. Unfortunately, it takes about 30 seconds on that link, so I have a lot of optimizations to do.
A couple of months ago, I figured out that my raymarcher wasn't mathematically correct, so I opened up the TurboWarp editor, and started a speedrun on making a raymarcher (it ended up taking about an hour, most of which was spent coming up with a creative way to fix a shading problem).