I'm thrilled that Laurenz Stampfl, a student at ETH Zurich, has completed his Masters degree, and has published the thesis: https://ethz.ch/content/dam/ethz/special-interest/infk/inst-pls/plf-dam/documents/StudentProjects/MasterTheses/2025-Laurenz-Thesis.pdf
The work is based on prototypes I did in the last few months, but is a complete reimplementation with lots of optimizations, including portable SIMD. I believe it's the fastest pure Rust CPU renderer, and also shares a lot of logic with vello_hybrid.