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backends: Flag that the frame attempted direct scanout

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We need this hint whether direct scanout succeeds or fails because it's
the mechanism by which we will tell the clock to enforce double buffering,
thus making direct scanout possible on future frames. Triple buffering
will be disabled until such time that direct scanout is not being attempted.

(cherry picked from commit a0c1c735a15456dd8d27c655694892e7d8751a16)
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1441>
Signed-off-by: Mingi Sung <sungmg@saltyming.net>
This commit is contained in:
Daniel van Vugt 2021-09-07 19:10:26 +08:00 committed by Mingi Sung
parent 287a23ace7
commit efe8da4dd1
Signed by: sungmg
GPG key ID: 41BAFD6FFD8036C5
1 changed files with 2 additions and 0 deletions
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2
src/backends/meta-stage-impl.c
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@ -800,6 +800,8 @@ meta_stage_impl_redraw_view (ClutterStageWindow *stage_window,
{
g_autoptr (GError) error = NULL;
clutter_frame_add_hint (frame, CLUTTER_FRAME_HINT_DIRECT_SCANOUT_ATTEMPTED);
if (meta_stage_impl_scanout_view (stage_impl,
stage_view,
scanout,