[mutter/wip/carlosg/no-scaled-views-check-in-thread] backends/native: Do not check for scaled views in the input thread

[Carlos Garnacho <carlosg src gnome org>]

commit 7fd2c26e9a962bbeee10bbc1a131b045fb686d10
Author: Carlos Garnacho <carlosg gnome org>
Date:   Thu Mar 18 21:04:35 2021 +0100

    backends/native: Do not check for scaled views in the input thread
    
    Instead, make this check on the main thread, and pass a NULL viewport
    information if views are not scaled.

 src/backends/native/meta-backend-native.c | 8 +++++---
 src/backends/native/meta-seat-impl.c      | 7 +++----
 2 files changed, 8 insertions(+), 7 deletions(-)
---
diff --git a/src/backends/native/meta-backend-native.c b/src/backends/native/meta-backend-native.c
index dbbedceaeb..ad29ad71b0 100644
--- a/src/backends/native/meta-backend-native.c
+++ b/src/backends/native/meta-backend-native.c
@@ -199,11 +199,13 @@ update_viewports (MetaBackend *backend)
   ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
   MetaSeatNative *seat =
     META_SEAT_NATIVE (clutter_backend_get_default_seat (clutter_backend));
-  MetaViewportInfo *viewports;
+  MetaViewportInfo *viewports = NULL;
+
+  if (!meta_is_stage_views_scaled ())
+    viewports = meta_monitor_manager_get_viewports (monitor_manager);
 
-  viewports = meta_monitor_manager_get_viewports (monitor_manager);
   meta_seat_native_set_viewports (seat, viewports);
-  g_object_unref (viewports);
+  g_clear_object (&viewports);
 }
 
 static void
diff --git a/src/backends/native/meta-seat-impl.c b/src/backends/native/meta-seat-impl.c
index a2ba884b9c..5d3f30b514 100644
--- a/src/backends/native/meta-seat-impl.c
+++ b/src/backends/native/meta-seat-impl.c
@@ -1182,9 +1182,6 @@ meta_seat_impl_filter_relative_motion (MetaSeatImpl       *seat_impl,
   int view = -1, dest_view;
   float new_dx, new_dy, scale;
 
-  if (meta_is_stage_views_scaled ())
-    return;
-
   if (seat_impl->viewports)
     view = meta_viewport_info_get_view_at (seat_impl->viewports, x, y);
   if (view < 0)
@@ -3495,7 +3492,9 @@ meta_seat_impl_set_viewports (MetaSeatImpl     *seat_impl,
   g_return_if_fail (META_IS_SEAT_IMPL (seat_impl));
 
   task = g_task_new (seat_impl, NULL, NULL, NULL);
-  g_task_set_task_data (task, g_object_ref (viewports), g_object_unref);
+  if (viewports)
+    g_task_set_task_data (task, g_object_ref (viewports), g_object_unref);
+
   meta_seat_impl_run_input_task (seat_impl, task,
                                  (GSourceFunc) set_viewports);
   g_object_unref (task);