If something quickly maps and unmaps a window, then we'll immediately
create and destroy the Wayland surface that cooresponds to that
window. If our mouse pointer is over the window when the surface is
created, we'll receive a enter on the window.
Since resource creation and destruction is not synchronous, that
means that the compositor will queue up an event for a resource that's
eventually destroyed. On the client-side, when we receive this message,
we note that the resource isn't allocated, and get a NULL surface in our
enter handler. We immediately try to dereference this, and then crash.
This was caused by running gtkperf while moving the window a lot.
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Jasper St. Pierre <jstpierre@mecheye.net>
Anytime a capability is first reported, the device is created, but after
that, it is only disabled/enabled.
This is a closer behavior to what Xorg does on VT switch, at the expense
of maybe leaving a dangling "physical" device if a capability goes for good.
Otherwise, any DeviceIntPtr (re)created after server initialization will be
left floating, and bad things happen when the wayland enter event handler
tries to update cursor position based on a floating device.
Signed-off-by: Carlos Garnacho <carlosg@gnome.org>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
Started out as an Xorg module to be used from Xorg drivers to let
Xorg run under a wayland server. The idea was to be able to reuse the
2D acceleration from the Xorg driver. Now with glamor being credible,
a better plan is to just make Xwayland its own DDX, similar to Xwin
and Xquartz. This is a much better fit, as much of the code in the
original approach had to hack around Xorg doing Xorg things like take
over the VT, probe input devices and read config files. Another big win
is that Xwayland dosn't need to be setuid root.
The Xwayland support for DRI3, Glamor and render nodes was done by
Axel Davy <axel.davy@ens.fr>, who also did a lot of work on the rebase
to the Xwayland DDX.
Contributions from:
Christopher James Halse Rogers <christopher.halse.rogers@canonical.com>
Corentin Chary <corentin.chary@gmail.com>
Daniel Stone <daniel@fooishbar.org>
Kristian Høgsberg <krh@bitplanet.net>
Robert Bragg <robert@linux.intel.com>
Scott Moreau <oreaus@gmail.com>
Tiago Vignatti <tiago.vignatti@intel.com>
Giovanni Campagna <gcampagn@redhat.com>
Jonas Ådahl <jadahl@gmail.com>
Ray Strode <rstrode@redhat.com>
Trevor McCort <tjmccort@gmail.com>
Rui Matos <tiagomatos@gmail.com>
Axel Davy <axel.davy@ens.fr>
Jasper St. Pierre <jstpierre@mecheye.net>
Signed-off-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Axel Davy <axel.davy@ens.fr>
