Neat little thing I just noticed, might be known but I never head of it before: apparently, a Wayland window can vsync to at least 3 monitors with different refresh rates at the same time.
I have 3 monitors, at 60 Hz, 144 Hz, and 60 Hz from left to right. I was using glxgears to test something, and noticed when I put the window between the monitors, it’ll sync to a weird refresh rate of about 193 fps. I stretched it to span all 3 monitors, and it locked at about 243 fps. It seems to oscillate between 242.5 and 243.5 gradually back and forth. So apparently, it’s mixing the vsync signals together and ensuring every monitor’s got a fresh frame while sharing frames when the vsyncs line up.
I knew Wayland was big on “every frame is perfect”, but I didn’t expect that to work even across 3 monitors at once! We’ve come a long, long way in the graphics stack. I expected it to sync to the 144Hz monitor and just tear or hiccup on the other ones.
Yeah, also pretty excited about PipeWire, the video stuff opens a ton of doors for OBS and broadcasting in general on Linux.
Waypipe is pretty good, can totally watch YouTube over SSH into a VM. It uses video codecs for compression, so in theory it can probably even get extended into game streaming. Probably not so great on low bandwidth environments but it’s not like modern apps use Xlib anyway, it’s all rendered by the client.
DEs are also implementing compositor level RDP support, which brings in a ton of room for properly optimizing remote access.