Can you say how the it's similar and how it's different to superficially similar sounding work?
(1) https://github.com/linebender/vello , dual Apache/MIT, by Raph Levien et al
(2) https://sluglibrary.com/ , proprietary, by Eric Lengyel (Terathon)
Vello is general purpose, like Rasterizer, but is based on GPU compute. Rasterizer uses the 'traditional' GPU pipeline. Performance numbers for both look very competitive, although Vello seems to have issues with GPU lock up at certain zoom scales. Rasterizer has been heavily tested with huge scenes at any scale.