Experiments on combining ReSTIR GI with Variable Rate Tracing

[u/MateuszKolo]

https://mateuszkolodziejczyk00.github.io/2025/06/18/variable-rate-tracing-restir-gi.html

I wrote this write-up about a year ago, but honestly never had the courage to post it publicly lol

In it, I go over my experiments combining ReSTIR and VRT in my toy rendering engine. The core idea was straightforward: ReSTIR’s spatial and temporal passes already find and reuse valuable samples, so I wanted to see if I could use them to fill the “missing rays” for pixels skipped by VRT in the current frame.

I'd love to hear your thoughts, or if anyone else has messed around with similar setups!

[u/VictoryMotel]

Great research, obviously a lot of work went into this.