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window-actor/wayland: Ignore unmapped subsurfaces in direct scanout check

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Clients expect us to ignore them, thus do so. Right now, if the topmost
subsurface is an unmapped subsurface, it will fail the
`meta_surface_actor_is_opaque()` check if it was never mapped before.
Further more, unmapped subsurfaces would wrongly disable our "only one
surface and fullscreen" optimization.

Closes https://gitlab.gnome.org/GNOME/mutter/-/issues/2550

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2755>
This commit is contained in:
Robert Mader 2022-12-09 21:47:32 +01:00 committed by Marge Bot
parent 35ecaafd6b
commit 3d618d5e45
1 changed files with 15 additions and 7 deletions
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22
src/compositor/meta-window-actor-wayland.c
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@ -298,8 +298,10 @@ meta_window_actor_wayland_get_scanout_candidate (MetaWindowActor *actor)
MetaWindowActorWayland *self = META_WINDOW_ACTOR_WAYLAND (actor);
ClutterActor *surface_container = CLUTTER_ACTOR (self->surface_container);
ClutterActor *child_actor;
MetaSurfaceActor *topmost_surface_actor;
ClutterActorIter iter;
MetaSurfaceActor *topmost_surface_actor = NULL;
MetaWindow *window;
int n_mapped_surfaces = 0;
if (clutter_actor_get_last_child (CLUTTER_ACTOR (self)) != surface_container)
{
@ -308,20 +310,26 @@ meta_window_actor_wayland_get_scanout_candidate (MetaWindowActor *actor)
return FALSE;
}
child_actor = clutter_actor_get_last_child (surface_container);
if (!child_actor)
clutter_actor_iter_init (&iter, surface_container);
while (clutter_actor_iter_next (&iter, &child_actor))
{
if (!clutter_actor_is_mapped (child_actor))
continue;
topmost_surface_actor = META_SURFACE_ACTOR (child_actor);
n_mapped_surfaces++;
}
if (!topmost_surface_actor)
{
meta_topic (META_DEBUG_RENDER,
"No surface-actor for window-actor");
return FALSE;
}
topmost_surface_actor = META_SURFACE_ACTOR (child_actor);
window = meta_window_actor_get_meta_window (actor);
if (!meta_surface_actor_is_opaque (topmost_surface_actor) &&
!(meta_window_is_fullscreen (window) &&
clutter_actor_get_n_children (surface_container) == 1))
!(meta_window_is_fullscreen (window) && n_mapped_surfaces == 1))
{
meta_topic (META_DEBUG_RENDER,
"Window-actor is not opaque");