Neovides uses cpu while idle

[Kethku]

Looks like the most recent rewrite broke the idle pausing of the renderer. I'll need to track down why that is and fix it.

[RedBeard0531]

On windows it shows using ~95% of the GPU in addition to ~1.5% of CPU when idle and in the background. If I lower the framerate to 20, it goes down to ~40%. The very high GPU usage seems more concerning than the CPU usage.

[Kethku]

Yeah I need to track down what exactly is going on

[Kethku]

It also appears to increase over time indicating a leak of some sort

[kirawi]

I don't really understand the codebase, but it looks like idle events are created, but never handled.

https://github.com/Kethku/neovide/blob/68582e05516fd3f6744752d8198ff3016d2190b9/src/editor/window.rs#L381-L383
https://github.com/Kethku/neovide/blob/68582e05516fd3f6744752d8198ff3016d2190b9/src/renderer/rendered_window.rs#L551
https://github.com/Kethku/neovide/blob/68582e05516fd3f6744752d8198ff3016d2190b9/src/window/winit/mod.rs#L252-L254

[kirawi]

It seems to be related to multigrid, since I don't have the problem anymore after disabling it. Scrolling down, as in to render the next line, with it enabled triggers it, possibly smooth scrolling? On another note, neovide scrolling seems to using a bit more GPU power than something like Chrome. It's fairly negligible for me, topping out at ~8% GPU, but something I noticed.

[jonvaldes]

Found the issue :)
#482