Holy crap! The demo is hitting 30 FPS from certain angles, on my decade-old CPU

Readers might also enjoy this: https://www.youtube.com/watch?v=il-TXbn5iMA

"I'm making a game engine based on dynamic signed distance fields (SDFs)"

That project is for GPU and it works by caching SDFs as marching cubes, with high resolution near the camera and low resolution far away, to build huge worlds out of arbitrary numbers of SDF edits.

So it probably wouldn't stack with these CPU optimizations that directly render the SDF at all.