Re:Audacious 4.0 released, switches from GTK to Qt 5
by chipperyman573 on Monday March 23, 2020 @04:31AM
(#22662128)
MacOS renders everything at the highest resolution and then downscales? Does that mean there are no performance benefits from using a lower resolution (or even potentially a performance hit from the downscaling)?
[ Parent
| on HN ]
Re:Audacious 4.0 released, switches from GTK to Qt 5
by vladvasiliu on Monday March 23, 2020 @06:54AM
(#22662764)
My experience with an older MBP (Late 2013 15" with dedicated GPU) is that there's a performance hit for non integer scaling.
I have an external 4K display that works flawlessly if I set it to default (that is 3840x2160 with 200% scaling). If I disable scaling completely (3840x2160 with 100% scaling) it still works well, but the text is a bit too small. With anything in between and there's a noticeable lag.
Interestingly enough, if the internal display uses non integer scaling (I sometimes use 1920x1200) with integer scaling on the external screen it still works ok.
I think it's related to the fact that MacOS draws everything at 200%, and using a non-integer scale over 1920x1080 ends up with a bigger resolution than 4k, whereas 4k at 100% is still 4k.