Gnome on WaylandAt a Glance

Seong-ho ChoGnome Korea

Wayland?

Wayland?

Wayland?

• New-generation window server replacement for X window server• New display ground for Enlightenment, GNOME and KDE• Compositor protocol to talk to a client• Supports more powerful display method• Doesn’t have rendering API

• “every frame is perfect, by which I mean that applications will be able to control the rendering enough that we'll never see tearing, lag, redrawing or flicker.” - by Kristian Høgsberg

History of Wayland

• Started at 2008 as a spare-time independent project by Kristian Høgsberg from RedHat

• Became a freedesktop.org project in October 2010• It was tried as a GSoC project in 2011, but wasn’t

successful• Quite recently, Nvidia releases graphic driver which

supports EGL API.– Nvidia graphic card can fully support wayland

Current Status

• Almost fully adopted in Enlightenment E18• Experimentally (and partially) adopted in

GNOME 3.10• Still pre-alpha release in KDE• Included in Qt 5 – has some bug such as “Fail to compile” … :S

Why Wayland We Should Use?

• Communication problem within X system• Need to make more brilliant user experience interface• Trend-shifting from desktop to mobile devices• X protocol is too old (developed in three decades ago)• Hard to apply new method onto the environment

based on X display server

Would You Remember?

XOrg-Evdevdrivers

XOrg-Evdevdrivers

CompositorCompositor

X Server Architecture

XfceXfceGNOME GNOME KDE KDE E17,18E17,18

X.Org ServerX.Org Server

CompizCompiz

PlasmaPlasma

Gnome Shell

Gnome Shell

EGLEGL

XOrg-Inputdrivers

XOrg-Inputdrivers

Xorg-Videodrivers

Xorg-Videodrivers

Kernel Drivers

DRIDRI

Proprietarydrivers

Proprietarydrivers

XscreenFrame

XscreenFrame

FinalFrameFinal

Frame

X Server Architecture (Simp.)

Wayland Architecture

GnomeShell

GnomeShell

KDEKWinKDE

KWinEnlight.DR18

Enlight.DR18

Wayland-serverWayland-server

Weston CompositorWeston Compositor

ApplicationsApplications

GTK+GTK+ QtQt

Desktop WidgetDesktop Widget

EFLEFL

OpenGL (EGL/GLES)

Kernel Modules

DirectRendered

Frame

DirectRendered

Frame

FinalFrameFinal

Frame

Wayland Architecture (Simp.)

Gnome on Wayland

• Now on experimental state (unstable)• It may be completed to implement on Mar, 2014

(in a guess by release schedule)• Components’ list and a relation within the system

will be almost totally changed due to this– So, there can be some problem in a system-view

• But!

Gnome & Wayland Architecture

X on Wayland Compatibility

Wayland Components on the Gentoo System

• Packages– dev-libs/wayland– dev-libs/weston– media-libs/mesa– x11-libs/gtk+

• Some keywords should be added to …– /etc/make.conf USE=“wayland wayland-compositor xwayland”

• I warn you – Do not change OpenRC to systemd until you totally know

• what setting value can(not) be migrated• where value should be moved to

– Do not change latest Qt version 5 with “wayland” feature• very unstable

Wayland on Ubuntu• Install packages

– sudo apt-get install build-essential libtool makedepend xutils-dev bison flex x11-dev libx11-dev glproto-dev libglproto-dev x11proto-gl-dev x11proto-dri2-dev libxext-dev libxdamage-dev libxdamage-dev libxfixes-dev libx11-xcb-dev libxcb-glx0-dev libxcb-dri2-0-dev libudev-dev libxcb-xfixes0-dev llvm-dev

• Follow instruction to build wayland– http://wayland.freedesktop.org/building.html

• Making toolkits to work on wayland is “working state” due to Gnome desktop environment

for the Other Issues...

• Wayland is in the test (research) progress for variety type of system such as embedded devices

• You can reach the time to use full featured “very stable” desktop environment from Oct, 2014 (maybe?)

Conclusion

• Wayland is the brand new display server can replace X server

• Wayland brings benefit for a performance to us by combining both wayland-server and wayland-composite part into the wayland server and by supporting two or more frame buffer

• We don’t have to worry about disappearing X– developers will sustain X environment for a more years for

a compatibility with legacy system

Making Wayland Contribution

• Git repo: http://cgit.freedesktop.org/wayland • Mailing list:

http://lists.freedesktop.org/mailman/listinfo/wayland-devel

• IRC: #wayland on freenode• Bugzilla:

https://bugs.freedesktop.org/enter_bug.cgi?product=Wayland

Reference

• http://maps.google.com/• http://wayland.freedesktop.org/ • http://en.wikipedia.org/wiki/Wayland_(display_server_protocol)• http://en.wikipedia.org/wiki/X_Window_System • https://phab.enlightenment.org/w/wayland/• https://help.gnome.org/misc/release-notes/3.10/• https://www.tizen.org/sites/default/files/lfcs2012_barnes.pdf • https://wiki.ubuntu.com/Wayland• http://www.slideshare.net/max_posedon/wayland-state-in-gentoo

Gnome Techtalk Event Note.

• You can download this slide from Gnome Korea Blog (about 1 week or more later)

• WebKit presentation will be presented in a 1~2 month later by a guest speaker

• Gnome Techtalk Event for a next month will be opened at Mid or Late November.

Thank you