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fe904b0706
306: Improve example friendliness: Don't busy-redraw in examples r=kvark a=khoek
Looking around for solid Rust graphics libraries, I was a bit shocked when the `wgpu-rs` examples made my whole X desktop environment in Ubuntu laggy---maximizing/minimizing other windows or moving any of them had very noticeable latency when an example was running.
This almost turned me off, but after playing around I found that this was just because of the
```rust
match event {
event::Event::MainEventsCleared => window.request_redraw(),
...
```
in all of the examples. Trying to add the least code possible I've replaced a `ControlFlow::Poll` with `ControlFlow::WaitUntil(...)` in the event loops and capped the redraws-per-second below 50, which completely solves this problem for me (plus the window resize response on the examples themselves are much improved, etc.).
I was just going for an unintrusive fix---this is by no means a perfect solution, but I think in the worst case it won't be any worse that what was there originally. Plus, I think it will make people like me who try to start by copying an example more likely to stick around in the short term.
Co-authored-by: Keeley Hoek <keeley@hoek.io>