I though that there were some "GPU accelerated path rendering" already 10 years ago ?
https://developer.nvidia.com/nv-path-rendering
https://developer.nvidia.com/gpu-accelerated-path-rendering
(OK those links are for NVidia, but if they can do it I guess others can too ?) (also see https://www.researchgate.net/publication/262357352_GPU-accel... )