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clutter/backend: Introduce a fallback scale set to primary monitor scale

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Add private API to ClutterBackend to set a fallback resource scale
available to Clutter. This API will be used for "guessing" the
resource-scale of ClutterActors in case the actor is not attached to a
stage or not properly positioned yet.

We set this value from inside mutters MetaRenderer while creating new
stage-views for each logical monitor. This makes it possible to set the
fallback scale to the scale of the primary monitor, which is the monitor
where most ClutterActors are going to be positioned.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1276
This commit is contained in:
Jonas Dreßler
2020-06-06 22:58:10 +02:00
committed by Jonas Ådahl
parent 162aec7802
commit 802b24a640
3 changed files with 34 additions and 0 deletions
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13
src/backends/meta-renderer.c
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@ -153,6 +153,19 @@ meta_renderer_real_rebuild_views (MetaRenderer *renderer)
{
MetaLogicalMonitor *logical_monitor = l->data;
if (meta_logical_monitor_is_primary (logical_monitor))
{
ClutterBackend *clutter_backend;
float scale;
clutter_backend = meta_backend_get_clutter_backend (backend);
scale = meta_is_stage_views_scaled ()
? meta_logical_monitor_get_scale (logical_monitor)
: 1.f;
clutter_backend_set_fallback_resource_scale (clutter_backend, scale);
}
meta_logical_monitor_foreach_crtc (logical_monitor,
create_crtc_view,
renderer);