How to specify the camera for Egui rendering?

[w4ngzhen]

Hello, bevy_egui is a great library! But may I ask, is there any way to specify the camera for Egui rendering? Or, how can I configure the viewport for Egui rendering?

[vladbat00]

Hi! Thank you for the kind words.

Atm, bevy_egui attaches its contexts either to windows or to textures. There are examples on how to render to a texture or to a different window:

• https://github.com/mvlabat/bevy_egui/blob/main/examples/render_egui_to_texture.rs
• https://github.com/mvlabat/bevy_egui/blob/main/examples/two_windows.rs

Is it something that could work for you?

If not, maybe there's a way we could get context attachable to cameras. But I'd like to hear more about your use-case first :)

I think the only thing that attaching to a camera would bring is limiting Egui to a certain viewport size (which we don't have a clean API for atm), but everything else should be possible already if I'm not missing anything.

[w4ngzhen]

Thank you very much for your reply. After careful consideration, I realized that my thoughts were indeed too complicated. My idea is that if bevy_egui can specify different cameras, then I can spawn a specific camera in certain scenarios and render the content of egui onto that specific camera. Now it seems that this scenario is too complex, perhaps I only need to display a widget at the specified location.