[jms55]

Hi, author of Solari here!

It was pretty straightforward honestly. bevy_solari is written as a standalone crate (library), without any special private APIs or permissions or anything https://github.com/bevyengine/bevy/tree/main/crates/bevy_sol....

The crate itself is further split between the realtime lighting plugin, base "raytracing scene" plugin that could be used for your own custom raytracing-based rendering, and the reference pathtracer I use for comparing the realtime lighting against.

There were some small changes to the rest of Bevy, e.g. adding a way to set extra buffer usages for the buffers we store vertex/index data in from another plugin https://github.com/bevyengine/bevy/pull/19546, or copying some more previous frame camera data to the GPU https://github.com/bevyengine/bevy/pull/19605, but nothing really major. It was added pretty independently.