Rendering above egui

[freiksenet]

Hi!

I'm trying to render a sprite (cursor image) above bevy_egui windows. Is it possible to do this?

[vladbat00]

Hi @freiksenet! Thanks for creating an issue.
To be honest, I've never tried this, but I think I'd start looking into how to create a custom render pass and render certain sprites during it.

Egui has RenderGraphConfig resource, and there you get can the egui_pass field to learn the name of the Egui pass and order them so that your custom pass runs before the Egui one.

You can probably get more help and some specific ideas/examples in Bevy discord. I'm not really experienced in rendering myself and kinda falling behind the recent changes. My guess is Bevy 0.8 might provide a simpler way of doing it.

If you do find out how to achieve that, I'll appreciate it if you share the solution here as well. I'm interested in adding this as a bevy_egui example.

Btw, I hope that in future Bevy will provide an API to set custom cursor images without having to rely on sprites.

[freiksenet]

So far I ended up drawing what I wanted (cursor) in egui, instead of Bevy. This is a decent workaround, but probably not a universal one.

[spectria-limina]

This can probably be done in bevy 0.13 by using the camera-driven UI at bevyengine/bevy#10559, and rendering onto a Camera rather than directly to the Window. This would require reworking the bevy_egui render pipeline a bit so that it can target a Camera.

[Matheuswells]

Any new solution for this problem ?