| > Everything from your list except HDR worked in X11 years before it started to work in Wayland compositors. Maybe not perfect, but better than any Wayland compositor could do the same until only a year or two ago. - X11 has no DPI virtualization or way for windows to communicate their DPI awareness. DPI is all handled by toolkits and desktops. Poorly. With multiple monitors, scaling is often buggy or entirely incorrect, only really working for one of the monitors. (How much you notice this obviously depends on what your desktop is like. Inside GNOME and KDE with "native" GNOME and KDE apps only, it should work decently most of the time. If you're i3wm or anything though you're pretty much guaranteed to have a bad time.) - X11 indeed does have support for variable refresh, but it doesn't really work very well. In my experience it has basically always been buggy and weird and caused things to misbehave and go choppy for no reason. Before they introduced AsyncFlipSecondaries in 2021, the behavior with multiple displays was essentially unusable. No matter what you do, you pretty much just have to live with tearing on VRR+multi monitor. Much better off disabled. - And yep, X11 just doesn't have any form of HDR/color management. > Maybe not perfect, but better than any Wayland compositor could do the same until only a year or two ago. As far as DPI scaling and VRR goes, this is false. I adopted SwayWM 7 years ago (from i3wm) specifically because I wanted my laptop to actually work with DPI scaling when I docked it. I actually don't know when VRR started to work right in SwayWM because I didn't yet have a VRR display, I just know that it already worked right when I tried it. Note that for much of that time Wayland didn't have proper fractional scale support, yet I had my laptop at 1.5x scale during most of this time. You'd be hard pressed to notice, because apps could still just render at 2x scale and then it would get virtualized and downsampled. That might sound bad, but that's also exactly what you get with macOS's display scaling, and people usually consider macOS display scaling to be pretty good. (To be more particular, macOS renders apps at either 1x or 2x, but then scales the entire framebuffer to get fractional scales. Clever... I guess.) As far as color management goes... well, X11 definitely couldn't do it better than any Wayland compositor, since it can't do it at all. |