drobilla
commented
2 months ago The wheel was very slow on MacOS.
As far as I can tell there's no well-defined way to convert to "lines" on MacOS, I'm guessing they've largely dispensed with the idea scroll wheel detents. We might need a more expressive API to be able to handle fancy scrolling and old school wheels. In the mean time, I don't have any of their fancy input devices to test on (other than a Macbook touchpad), and this makes them work the same at least for a single tick of the wheel on an external mouse: f7b3fe4
Touchpad speed is unaffected but feels vaguely reasonable to me (I can achieve a 1.0 line scroll going very slowly and deliberately, which is about right).
On latest pugl the mouse scroll is around 10x slower on macOS versus other platforms.
Dont really know the details anymore, I should have reported this earlier but was always waiting for a possibility to test on win + mac + linux that didnt happen and then forgot about it.
So I don't really have details right now, but I think it should very obvious once you try it and either log the values or have a test tool for it. Basically the Linux and Windows scroll delta behave similarly (tested with a usb mouse and touchpad) while on macOS the delta values are much lower, but I dont recall if I tested on mousepad or usb mouse.
Reporting now since you are doing some pugl changes, so taking the opportinity for it.