@chengdulittlea https://repo-sam.inria.fr/fungraph/3d-gaussian-splatting/ may be of relevance? High in 'janky academic code', I assume, but seems to be close enough to what you're looking for (found it through this shitpost: https://www.youtube.com/watch?v=GInps7ViawA)
@joepie91 Thank you :D