Hi folks! Last author here, happy to answer questions, very surprised to see this on HN. We had a blast working on this. Let me add that the Skia team at Google

Hi folks! Last author here, happy to answer questions, very surprised to see this on HN. We had a blast working on this. Let me add that the Skia team at Google was super supportive, met with us many times to explain a lot of stuff. I had the idea for this project years ago while writing Web Browser Engineering with Chris Harrelson (see https://browser.engineering/ https://browser.engineering/). Then a few years ago I made a first attempt at this project with Yuvaraj (https://droidkid.github.io/ https://droidkid.github.io/), but for various reasons we never got very far. I restarted the project with Bhargav (https://bhargavkk.com/ https://bhargavkk.com/) about a year ago, and focused much more seriously on the semantics of Skia itself, which made progress much more rapid. Still, I was, frankly, shocked by how good the results are.