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clutter/offscreen-effect: Clear offscreen framebuffer when disabling

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When changing the 'enabled' property and disabling the offscreen effect,
it doesn't make sense to preserve the offscreen framebuffer. It's not
drawing, after all.

Furthermore, because ClutterOffscreenEffect only checks if the offscreen
framebuffer exists to decide whether or not to redraw, keeping the fbo
alive is a waste of resources.

Clear the offscreen framebuffer when the effect is disabled or enabled.

Fixes https://gitlab.gnome.org/GNOME/mutter/issues/810

https://gitlab.gnome.org/GNOME/mutter/merge_requests/992

(cherry picked from commit bf594e9fb6)
This commit is contained in:
Georges Basile Stavracas Neto 2020-01-07 11:58:54 -03:00 committed by Robert Mader
parent d35d7fb618
commit 47fe7ac25b
1 changed files with 14 additions and 0 deletions
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14
clutter/clutter/clutter-offscreen-effect.c
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@ -467,6 +467,19 @@ clutter_offscreen_effect_paint (ClutterEffect *effect,
clutter_offscreen_effect_paint_texture (self); clutter_offscreen_effect_paint_texture (self);
} }
static void
clutter_offscreen_effect_notify (GObject *gobject,
GParamSpec *pspec)
{
ClutterOffscreenEffect *offscreen_effect = CLUTTER_OFFSCREEN_EFFECT (gobject);
ClutterOffscreenEffectPrivate *priv = offscreen_effect->priv;
if (strcmp (pspec->name, "enabled") == 0)
g_clear_pointer (&priv->offscreen, cogl_object_unref);
G_OBJECT_CLASS (clutter_offscreen_effect_parent_class)->notify (gobject, pspec);
}
static void static void
clutter_offscreen_effect_finalize (GObject *gobject) clutter_offscreen_effect_finalize (GObject *gobject)
{ {
@ -497,6 +510,7 @@ clutter_offscreen_effect_class_init (ClutterOffscreenEffectClass *klass)
effect_class->paint = clutter_offscreen_effect_paint; effect_class->paint = clutter_offscreen_effect_paint;
gobject_class->finalize = clutter_offscreen_effect_finalize; gobject_class->finalize = clutter_offscreen_effect_finalize;
gobject_class->notify = clutter_offscreen_effect_notify;
} }
static void static void