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wayland: Store map of ready presentation feedbacks

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These are feedbacks for updates that were drawn or otherwise displayed
on screen, and need to be fired as soon as their presentation happens.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1484>
This commit is contained in:
Ivan Molodetskikh 2020-10-12 14:10:43 +03:00 committed by Marge Bot
parent 0c3490223e
commit f0c2200466
2 changed files with 62 additions and 0 deletions
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10
src/wayland/meta-wayland-presentation-time-private.h
View File

@ -39,6 +39,13 @@ typedef struct _MetaWaylandPresentationFeedback
typedef struct _MetaWaylandPresentationTime
{
GList *feedback_surfaces;
/*
* A mapping from (ClutterStageView *) to a
* (MetaWaylandPresentationFeedback *) wl_list of presentation-time feedbacks
* that are scheduled to be presented.
*/
GHashTable *feedbacks;
} MetaWaylandPresentationTime;
void meta_wayland_init_presentation_time (MetaWaylandCompositor *compositor);
@ -49,4 +56,7 @@ void meta_wayland_presentation_feedback_present (MetaWaylandPresentationFeedback
ClutterFrameInfo *frame_info,
MetaWaylandOutput *output);
struct wl_list * meta_wayland_presentation_time_ensure_feedbacks (MetaWaylandPresentationTime *presentation_time,
ClutterStageView *stage_view);
#endif /* META_WAYLAND_PRESENTATION_TIME_PRIVATE_H */

52
src/wayland/meta-wayland-presentation-time.c
View File

@ -111,9 +111,43 @@ wp_presentation_bind (struct wl_client *client,
wp_presentation_send_clock_id (resource, CLOCK_MONOTONIC);
}
static void
destroy_feedback_list (gpointer data)
{
struct wl_list *feedbacks = data;
while (!wl_list_empty (feedbacks))
{
MetaWaylandPresentationFeedback *feedback =
wl_container_of (feedbacks->next, feedback, link);
meta_wayland_presentation_feedback_discard (feedback);
}
g_free (feedbacks);
}
static void
on_monitors_changed (MetaMonitorManager *manager,
MetaWaylandCompositor *compositor)
{
/* All ClutterStageViews were re-created, so clear our map. */
g_hash_table_remove_all (compositor->presentation_time.feedbacks);
}
void
meta_wayland_init_presentation_time (MetaWaylandCompositor *compositor)
{
MetaBackend *backend = compositor->backend;
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
compositor->presentation_time.feedbacks =
g_hash_table_new_full (NULL, NULL, NULL, destroy_feedback_list);
g_signal_connect (monitor_manager, "monitors-changed-internal",
G_CALLBACK (on_monitors_changed), compositor);
if (wl_global_create (compositor->wayland_display,
&wp_presentation_interface,
META_WP_PRESENTATION_VERSION,
@ -252,3 +286,21 @@ meta_wayland_presentation_feedback_present (MetaWaylandPresentationFeedback *fee
wl_resource_destroy (feedback->resource);
}
struct wl_list *
meta_wayland_presentation_time_ensure_feedbacks (MetaWaylandPresentationTime *presentation_time,
ClutterStageView *stage_view)
{
if (!g_hash_table_contains (presentation_time->feedbacks, stage_view))
{
struct wl_list *list;
list = g_new0 (struct wl_list, 1);
wl_list_init (list);
g_hash_table_insert (presentation_time->feedbacks, stage_view, list);
return list;
}
return g_hash_table_lookup (presentation_time->feedbacks, stage_view);
}