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I was also surprised to learn how nice EGUI is. Big widget kit, clean API (Which is often not true for Rust dependencies!) and integrates into WGPU-rendering. I

I was also surprised to learn how nice EGUI is. Big widget kit, clean API (Which is often not true for Rust dependencies!) and integrates into WGPU-rendering. It allows me to use Rust to make Desktop applications. I'm concerned about the performance hit of an immediate-mode GUI when not tieing it into a 3D render (ie the CPU access from repeatedly re-drawing), but haven't compared.

juancampa 4y ago
In my experience it's surprisingly fast. Egui doesn't need to redraw when it's idling, only when you're interacting with it (mouse move) or it's animating something so IMO it's not a big deal. I have to admit that I've only tested it on high-end laptops/phones though. Not sure about mid/low-end ones yet.