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surface-actor/wayland: Ensure screen-casted surfaces have a primary view

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Surfaces belonging to a screen-casted window should always be considered
visible even if they are not visible on any stage view - be it because
they are on a different workspace, minimized or occluded.

Doing this in an optimal fashion is highly complex right now -
interdependent with (and somewhat similar to) ClutterClones. Thus treat
stream-casted surfaces similar to those with clones, with the small
difference that even a fully invisible surface still gets a primary view
- the fastest one. This ensures that clients never refresh too slow for a
screen-cast, at the cost of sometimes refreshing too fast.
The later only happens on certain multi-monitor setups and should thus be
acceptable.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2789>
This commit is contained in:
Robert Mader 2023-02-11 07:03:43 +01:00
parent fe17dbc322
commit 4409dd24b6
1 changed files with 35 additions and 15 deletions
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42
src/compositor/meta-surface-actor-wayland.c
View File

@ -30,7 +30,9 @@
#include "backends/meta-backend-private.h"
#include "backends/meta-logical-monitor.h"
#include "backends/meta-screen-cast-window.h"
#include "compositor/meta-shaped-texture-private.h"
#include "compositor/meta-window-actor-private.h"
#include "compositor/region-utils.h"
#include "wayland/meta-wayland-buffer.h"
#include "wayland/meta-wayland-private.h"
@ -74,15 +76,19 @@ meta_surface_actor_wayland_is_view_primary (MetaSurfaceActor *actor,
ClutterStageView *current_primary_view = NULL;
float highest_refresh_rate = 0.f;
float biggest_unobscurred_fraction = 0.f;
MetaWindowActor *window_actor;
gboolean is_streaming = FALSE;
GList *l;
if (!clutter_actor_is_effectively_on_stage_view (CLUTTER_ACTOR (actor),
stage_view))
return FALSE;
window_actor = meta_window_actor_from_actor (CLUTTER_ACTOR (actor));
if (window_actor)
is_streaming = meta_window_actor_is_streaming (window_actor);
if (clutter_actor_has_mapped_clones (CLUTTER_ACTOR (actor)))
if (clutter_actor_has_mapped_clones (CLUTTER_ACTOR (actor)) || is_streaming)
{
ClutterStage *stage;
ClutterStageView *fallback_view = NULL;
float fallback_refresh_rate = 0.0;
stage = CLUTTER_STAGE (clutter_actor_get_stage (CLUTTER_ACTOR (actor)));
for (l = clutter_stage_peek_stage_views (stage); l; l = l->next)
@ -90,28 +96,42 @@ meta_surface_actor_wayland_is_view_primary (MetaSurfaceActor *actor,
ClutterStageView *view = l->data;
float refresh_rate;
if (!clutter_actor_is_effectively_on_stage_view (CLUTTER_ACTOR (actor),
view))
continue;
refresh_rate = clutter_stage_view_get_refresh_rate (view);
if (clutter_actor_is_effectively_on_stage_view (CLUTTER_ACTOR (actor),
view))
{
if (refresh_rate > highest_refresh_rate)
{
current_primary_view = view;
highest_refresh_rate = refresh_rate;
}
}
else
{
if (refresh_rate > fallback_refresh_rate)
{
fallback_view = view;
fallback_refresh_rate = refresh_rate;
}
}
}
if (current_primary_view)
return current_primary_view == stage_view;
else if (is_streaming)
return fallback_view == stage_view;
}
l = clutter_actor_peek_stage_views (CLUTTER_ACTOR (actor));
g_return_val_if_fail (l, FALSE);
if (!l)
return FALSE;
if (!l->next)
{
g_return_val_if_fail (l->data == stage_view, FALSE);
return !meta_surface_actor_is_obscured (actor);
return !meta_surface_actor_is_obscured_on_stage_view (actor,
stage_view,
NULL);
}
for (; l; l = l->next)