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core: Select the X11 backend of Clutter

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Mutter depends on the X11 windowing backend of Clutter, unless it's used
as a Wayland display server.

This allows Mutter to run without breaking in case Clutter changes the
order with which windowing backends are selected, like it was the case
for bug https://bugzilla.gnome.org/show_bug.cgi?id=734587

The order of selection of the Clutter backends has not been made public,
so it cannot be relied upon since the introduction of the multiple
backends support; since Mutter requires the X11 backend functionality,
it should select the X11 windowing system, in the same way it selects
the EGL backend when compiled and run as a Wayland display server.
This commit is contained in:
Emmanuele Bassi 2014-08-13 14:27:20 +01:00
parent e320b06aaa
commit 9440bdb1aa
1 changed files with 2 additions and 0 deletions
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2
src/core/main.c
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@ -319,7 +319,9 @@ meta_init (void)
#if defined(CLUTTER_WINDOWING_EGL) && defined(HAVE_NATIVE_BACKEND) #if defined(CLUTTER_WINDOWING_EGL) && defined(HAVE_NATIVE_BACKEND)
if (opt_display_server) if (opt_display_server)
clutter_set_windowing_backend (CLUTTER_WINDOWING_EGL); clutter_set_windowing_backend (CLUTTER_WINDOWING_EGL);
else
#endif #endif
clutter_set_windowing_backend (CLUTTER_WINDOWING_X11);
meta_set_is_wayland_compositor (opt_wayland); meta_set_is_wayland_compositor (opt_wayland);