Integration with custom third-party wgpu engine

[maxammann]

I was wondering whether bevy offers some low level API in order to integrate a second wgpu engine into the rendering loop.
The WebGPU API offers render passes. I was wondering whether it is somehow possible to submit a render pass to bevy.

Maybe the other way around is could also be possible. Maybe it is possible to execute bevy's render passes on a user submitted queue.

Background

I'm currently writing a rendering engine for tiled vector maps using wgpu. I would be interested in integrating bevy for rendering an UI or loading and rendering 3d models.