Comment by pixelsynth

Spark allows you to construct compute graphs at runtime in Javascript and have them compiled and run on the GPU and not be bound by the CPU: https://sparkjs.dev/docs/dyno-overview/

WebGL2 isn't the best graphics API, but it allows anyone to write Javascript code to harness the GPU for compute and rendering, and run on pretty much any device via the web browser. That's pretty amazing IMO!