State of Wayland, 2012-04-08
Kristian Høgsberg
krh at bitplanet.net
Mon Apr 9 19:42:57 PDT 2012
That's a very nice overview of the project, though I'd point out that
there's a bit more work to do on GTK+ support: client side decorations
(as you mention), selections, dnd and popup placement are the big
ones. It would also be nice to included a summary of what's mssing in
the protocol and the state of mutter-on-wayland.
thanks,
Kristian
On Sun, Apr 8, 2012 at 2:08 PM, <darxus at chaosreigns.com> wrote:
> This is far from official. If you have better information, please provide
> it. HTML version: http://www.chaosreigns.com/wayland/state/
>
>
> Drivers
>
> The reference compositor works with Intel, Radeon, and Nvidia
> (Nouveau) open source drivers. [1]Nouveau + OpenGL clients hangs.
>
> XWayland
>
> XWayland, the ability to run X clients within Wayland, is
> [2]currently broken, in the middle of transitioning to using a
> special X window manager. [3]Tiago did some work on it, which has
> not been committed. Other than that, DDX support for Intel video
> exists, [4]a software implementation exists but may need updating,
> and someone has done some work on Radeon but not released source.
> Nvidia / Nouveau support hasn't been touched.
>
> Toolkits
>
> Wayland usability is mostly down to applications migrating to GTK3
> and QT5.
>
> GTK+ 3.4.1 and QT5 appear to have complete Wayland support except
> for client side decorations. EFL and Clutter appear to have
> complete support.
>
> So any application should work with Wayland as long as it uses one
> of these four toolkits, and it doesn't call any Xlib functions.
> Unfortunately a number of GTK+ applications do call Xlib, through
> gdk_x11_* functions, and they need to be wrapped in [5]build-time
> and run-time backend checks.
>
> And while [6]GTK3 was released over a year ago, [7]QT5 only had
> its first alpha release last week. While many GTK+ applications
> haven't made the conversion yet, presumably Qt applications, for
> the most part, haven't started.
>
> GTK+ 3.4.0 has a [8]bug causing it to break when the X11 and
> Wayland backends are both built. The workaround has been applied
> in master and will be included in the [9]3.4.1 release on April
> 18th.
>
> The GTK graphics glitch was a [10]cairo-gl bug, easy enough to
> avoid.
>
> Rob Bradford has a [11]branch of [12]gtk that doesn't require
> cairo-gl, which will be merged with master once 3.4 is branched
> off. I've tested it. This should allow Ubuntu to [13]enable the
> Wayland backend in GTK in the October 2012 (12.10) release.
>
> Browsers
>
> The only web browser I've tested that works is qtwebkit, which is
> included with the QT5 source. [14]Weston occasionally crashes when
> running it. It seems likely that the [15]snowshoe browser works,
> via QT5.
>
> The [16]webkitgtk browser doesn't work. As expected, the
> [17]midori browser based on webkitgtk doesn't work.
>
> [18]Firefox has a long way to go.
>
> [19]Chrome / chromium might work, but I haven't seen how.
>
> Terminals
>
> weston-terminal is actually pretty decent.
>
> vte, based on gtk, works fine.
>
> [20]gnome-terminal seems likely to work, I just haven't tried
> quite the right incantation yet.
>
> Surprisingly, there don't seem to be any terminal applications
> written in Qt or EFL. I haven't tried [21]clutterm, which uses
> Clutter, mostly because it says "This is a work in progress and
> it's far from ready for every day use."
>
> Other Applications
>
> Of the 22 [22]gtk applications I tried from the default Ubuntu
> Precise menu (html5 video), 9 worked, and 13 didn't due to using
> Xlib calls. 41% worked as packaged by Ubuntu (after I rebuilt GTK
> with --enable-wayland-backend).
>
> Open Bugs
>
> * [23]GTK+: Wayland and x11 backends simultaneously enabled is
> broken.
> * [24]Ubuntu: Enable wayland backend in GTK+
> * [25]Totem: Add wayland support (remove Xlib calls).
> * [26]WebKitGTK+: Enable wayland support (remove Xlib calls).
>
> The Nvidia proprietary + cairo-gl mess:
> * [27]Cairo: Dynamically load libGL in cairo-gl
> * [28]GTK+: Remove cairo-gl dependency from wayland backend,
> fall back to software as weston does.
> * [29]Debian packaging: Add support for versioned provides. This
> is 15 years old.
>
>
> References
>
> 1. https://bugs.freedesktop.org/show_bug.cgi?id=48074
> 2. https://bugs.freedesktop.org/show_bug.cgi?id=46743
> 3. http://lists.freedesktop.org/archives/wayland-devel/2012-April/002861.html
> 4. http://lists.freedesktop.org/archives/wayland-devel/2011-June/001163.html
> 5. http://developer.gnome.org/gtk3/3.3/ch24s02.html#id1502079
> 6. https://mail.gnome.org/archives/gtk-devel-list/2011-February/msg00020.html
> 7. http://labs.qt.nokia.com/2012/04/03/qt-5-alpha/
> 8. http://developer.gnome.org/gtk3/3.3/ch24s02.html#id1502079
> 9. https://live.gnome.org/ThreePointThree
> 10. https://bugs.freedesktop.org/show_bug.cgi?id=48221
> 11. https://github.com/rbradford/gtk/tree/wip/wayland-render-changes
> 12. http://lists.freedesktop.org/archives/wayland-devel/2012-April/002876.html
> 13. https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/954352/
> 14. https://bugs.freedesktop.org/show_bug.cgi?id=47728
> 15. http://snowshoe.qtlabs.org.br/
> 16. https://bugs.webkit.org/show_bug.cgi?id=81456
> 17. https://bugs.launchpad.net/midori/+bug/975355
> 18. https://bugzilla.mozilla.org/show_bug.cgi?id=635134
> 19. http://www.phoronix.com/scan.php?page=news_item&px=OTc4NA
> 20. https://bugzilla.gnome.org/show_bug.cgi?id=673323
> 21. https://github.com/paradoxxxzero/clutterm
> 22. http://www.chaosreigns.com/wayland/demos/2012-04-07-wayland-several-gtk-apps.html
> 23. https://bugzilla.gnome.org/show_bug.cgi?id=672358
> 24. https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/954352
> 25. https://bugzilla.gnome.org/show_bug.cgi?id=672735
> 26. https://bugs.webkit.org/show_bug.cgi?id=81456
> 27. https://bugs.freedesktop.org/show_bug.cgi?id=47480
> 28. https://bugzilla.gnome.org/show_bug.cgi?id=672361
> 29. http://www.chaosreigns.com/wayland/state/bugs.debian.org/cgi-bin/bugreport.cgi?bug=7330
> 30. http://www.chaosreigns.com/wayland/state/2012-03-24.html
> 31. http://www.chaosreigns.com/wayland/
>
> --
> "It is better to die on your feet than to live on your knees."
> - Emiliano Zapata, Mexican Revolution Leader
> http://www.ChaosReigns.com
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