HarfBuzz Slug Support with WebGL

HarfBuzz = text shaping engine, https://github.com/harfbuzz/harfbuzz

Slug = Formely patented font rendering algorithm for GPUs, freed 2 weeks ago https://terathon.com/blog/decade-slug.html

Very cool. I've noticed slug popping up more often on HN and I've been thinking of finding a way to incorporate it into my project as well.

Is this yours? What's your rendering system like - anything novel or fun you run into when working with text and GPU parallelism?