Wio: Plan 9's Rio Windowing System Re-Implemented As A Wayland Compositor
Written by Michael Larabel in Wayland on 1 May 2019 at 02:44 PM EDT. 16 Comments
Wio is the newest Wayland compositor out there and re-implements Rio, the windowing system used by Bell Labs' Plan 9 operating system.

Wio is a side project of Drew DeVault, the lead developer of the Sway i3-inspired Wayland compositor as well as the WLROOTS Wayland library.

With WLROOTS allowing for a lot of code re-use between Wayland compositors and Drew also leveraging the kiosk-like Cage Wayland compositor, it was a feasible project having a Rio-inspired compositor.

Rio allows running another instance of itself inside the window manager and makes the window management process transparent to the application. In the case of Wio, each application is run in its own Cage Wayland compositor.

In being relevant for 2019, Wio supports multi-head displays, HiDPI support, and other features not originally supported by Rio.

Those curious about the Wio Wayland compositor can learn more on Drew's blog.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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