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clutter-offscreen-effect: Invalidate cache on gl-video-memory-purged

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This fixes graphics corruption that could occur on resume from suspend
with the Nvidia driver.

https://www.khronos.org/registry/OpenGL/extensions/NV/NV_robustness_video_memory_purge.txt

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1374
This commit is contained in:
Daniel van Vugt 2020-07-17 15:35:13 +08:00 committed by Jonas Ådahl
parent 305fcd0713
commit 2de69cd3cc
1 changed files with 27 additions and 1 deletions
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28
clutter/clutter/clutter-offscreen-effect.c
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@ -100,6 +100,8 @@ struct _ClutterOffscreenEffectPrivate
int target_height;
gint old_opacity_override;
gulong purge_handler_id;
};
G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (ClutterOffscreenEffect,
@ -158,6 +160,12 @@ ensure_pipeline_filter_for_scale (ClutterOffscreenEffect *self,
filter, filter);
}
static void
video_memory_purged (ClutterOffscreenEffect *self)
{
g_clear_pointer (&self->priv->offscreen, cogl_object_unref);
}
static gboolean
update_fbo (ClutterEffect *effect,
int target_width,
@ -166,8 +174,26 @@ update_fbo (ClutterEffect *effect,
{
ClutterOffscreenEffect *self = CLUTTER_OFFSCREEN_EFFECT (effect);
ClutterOffscreenEffectPrivate *priv = self->priv;
ClutterActor *stage_actor;
stage_actor = clutter_actor_get_stage (priv->actor);
if (stage_actor != priv->stage)
{
g_clear_signal_handler (&priv->purge_handler_id, priv->stage);
priv->stage = stage_actor;
if (priv->stage)
{
priv->purge_handler_id =
g_signal_connect_object (priv->stage,
"gl-video-memory-purged",
G_CALLBACK (video_memory_purged),
self,
G_CONNECT_SWAPPED);
}
}
priv->stage = clutter_actor_get_stage (priv->actor);
if (priv->stage == NULL)
{
CLUTTER_NOTE (MISC, "The actor '%s' is not part of a stage",