alt Hacker NewsI agree that this is not a necessary downside to immediate mode GUIs, but we're talking about egui specifically here. AFAIK, egui always redraws at some relatively high rate even when nothing is happening. (I'm having trouble finding documentation about what that rate is though.)
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ModernMech • yesterday at 1:54 PM
There are two modes, reactive and continuous. You can switch between them here in the backend tab:
Reactive mode is the one you are looking for.
That's not true, it only re-renders if there's an input event or an animation running. This is very easy to see if you just put a `println!` in your UI logic.
This is also mentioned in the gui docs here https://github.com/emilk/egui#why-immediate-mode:
> egui only repaints when there is interaction (e.g. mouse movement) or an animation, so if your app is idle, no CPU is wasted.