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compositor: Update composite overlay window before unredirecting
The current ordering updates the clip shape of the composite overlay
window after unredirecting the target window. This has the effect of
forcing X to clear the target window and sending an expose to the
application to repaint - causing an unsightly flash. If we update the
shape first, then unredirect, X restores the background of the root
window (sending no expose events as no one is interested) and the
background is typically NONE for the root window. Then the unredirect
paints the contents of the composite backing pixmap over top without
requiring a round trip and waiting for the client to repaint - thus no
flashing.
Fixes regression from
commit d6282716b2
Author: Jasper St. Pierre <jstpierre@mecheye.net>
Date: Fri Dec 6 17:10:44 2013 -0500
compositor: Simplify the unredirected window management code
Cc: Jasper St. Pierre <jstpierre@mecheye.net>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
https://bugzilla.gnome.org/show_bug.cgi?id=743858
This commit is contained in:
parent
7f19db1f7b
commit
72f5a36522
@ -614,6 +614,7 @@ set_unredirected_window (MetaCompositor *compositor,
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meta_window_actor_set_unredirected (window_actor, FALSE);
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meta_window_actor_set_unredirected (window_actor, FALSE);
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}
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}
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meta_shape_cow_for_window (compositor, window);
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compositor->unredirected_window = window;
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compositor->unredirected_window = window;
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if (compositor->unredirected_window != NULL)
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if (compositor->unredirected_window != NULL)
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@ -621,8 +622,6 @@ set_unredirected_window (MetaCompositor *compositor,
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MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (compositor->unredirected_window));
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MetaWindowActor *window_actor = META_WINDOW_ACTOR (meta_window_get_compositor_private (compositor->unredirected_window));
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meta_window_actor_set_unredirected (window_actor, TRUE);
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meta_window_actor_set_unredirected (window_actor, TRUE);
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}
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}
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meta_shape_cow_for_window (compositor, compositor->unredirected_window);
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}
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}
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void
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void
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