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by Lockal 40 days ago
Chrome on Linux suffers from this too. The issues are standard for all naive immediate GUI libs:

- constant repainting (while literally nothing changes) -> constant CPU load

- some libs can skip repaints but have no concept of damage area

- bad handling of high-dpi (which also can change dynamically)

- constant repainting behaves even worse on laptops which announce 180 Hz refresh interval, which means that it drains the battery 3 times faster than 60 Hz
1 comments
flohofwoe 40 days ago
> - constant repainting (while literally nothing changes) -> constant CPU load

This doesn't explain a 100% CPU usage since requestAnimationFrame is vsync-throttled and rendering such a simple scene will do the per-frame work in a fraction of a frame duration.

And FWIW I cannot reproduce the issue in both demos (in Chrome on macOS). The sokol demo has a per-frame load of about 0.3ms per 8.333ms frame, and the demo hosted on vercel.app about 0.7ms, both pretty much within expecations.

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