For a few hours here and there over the past few months, I’ve been working on a side project: Wio. I’ll just let the (3 minute) screencast do the talking first:
Note: this video begins with several seconds of grey video. This is normal.
In short, Wio is a Wayland compositor based on wlroots which has a similar look and feel to Plan 9’s Rio desktop. It works by running each application in its own nested Wayland compositor, based on Cage - yet another wlroots-based Wayland compositor. I used Cage in last week’s RDP article, but here’s another cool use-case for it.
The behavior this allows for (each window taking over its parent’s window, rather than spawning a new window) has been something I wanted to demonstrate on Wayland for a very long time. This is a good demonstration of how Wayland’s fundamentally different and conservative design allows for some interesting use-cases which aren’t possible at all on X11.
I’ve also given Wio some nice features which are easy thanks to wlroots, but difficult on Plan 9 without kernel hacking. Namely, these are multihead support, HiDPI support, and support for the wlroots layer shell protocol. Several other wlroots protocols were invited to the party, useful for taking screenshots, redshift, and so on. Layer shell support is particularly cool, since programs like swaybg and waybar work on Wio.
In terms of Rio compatability, Wio has a ways to go. I would seriously appreciate help from users who are interested in improving Wio. Some notably missing features include:
- Any kind of filesystem resembling Rio’s window management filesystem. In theory this ought to be do-able with FUSE, at least in part (/dev/text might be tough).
- Running every application in its own namespace, for double the Plan 9
- Hiding/showing windows (that menu entry is dead)
- Joint improvements with Cage to bring greater support for Wayland features, like client-side window resize/move, fullscreen windows, etc
- Damage tracking to avoid re-rendering everything on every frame, saving battery life and GPU time
Articles from blogs I follow around the net
We are excited to launch the new Go official swag and merch store shipping worldwide. We are even more excited to announce that 100% of the proceeds from the Go store go directly to GoBridge. GoBridge is a non-profit organization focused on building bridges…via The Go Programming Language Blog July 18, 2019
This is a psuedo-transcript for a talk given at Deconstruct 2019. To make this accessible for people on slow connections as well as people using screen readers, the slides have been replaced by in-line text (the talk has ~120 slides; at an average of 20 k…via Dan Luu July 12, 2019
This post gives an overview of the recent updates to the Writing an OS in Rust blog and the used libraries and tools. My focus this month was to finish the Heap Allocation post, on which I had been working since March. I originally wanted to include a sect…via Writing an OS in Rust July 6, 2019
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