View source for Wayland

==Intro==

Wayland is the new protocol dedicated to replace X11 windowing system. It's first Linux implementation is called ''weston''. It uses KMS/DRM video drivers direct access, and so needs a recent kernel (4.4+). It currently works well on [[APF6]].

==Installation==

Use corresponding config (''apf6_wayland_defconfig)'', or activate it in menuconfig:

<pre class="config>
...
Target packages  --->
    ...
    Graphic libraries and applications (graphic/text)  --->
        ...
        [*] weston                                                                                 │ │  
│ │           default compositor (drm)  --->                                                       │ │  
│ │     -*-   DRM compositor                                                                       │ │  
│ │     [ ]   RDP compositor                                                                       │ │  
│ │     [ ]   headless (testing) compositor                                                        │ │  
│ │     [ ]   Wayland (nested) compositor                                                          │ │  
│ │     [ ]   X11 (nested) compositor                                                              │ │  
│ │     [ ]   XWayland support                                                                     │ │  
│ │     [*]   desktop shell                                                                        │ │  
│ │     [*]   fullscreen shell                                                                     │ │  
│ │     [*]   ivi shell                                                                            │ │  
│ │     [*]   kiosk shell                                                                          │ │  
│ │     [*]   demo clients                                                                         │ │
</pre>

== Launching ==
* Needs to be done from a graphical/framebuffer console. [[Framebuffer#Login.2FConsole|To activate one]].
* Login to graphical console / tty1
* Do some config the first boot:
<pre class="apf">
# mkdir /tmp/runtime
# chmod 0700 /tmp/runtime
# export XDG_RUNTIME_DIR=/tmp/runtime
</pre>
* Start weston
<pre class="apf">
# weston -B drm-backend.so
</pre>

==Tips==
* For OpenGL/ES demos, it is necessary to increase Linux kernel allocable video memory at boot:
<pre class="APF">
BIOS> setenv extrabootargs '${extrabootargs} cma=256M'
</pre>

[[Category:Graphical User Interface]]