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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.

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 0b3ca725dd
commit 3e296e84d0
Signed by: sungmg
GPG key ID: 41BAFD6FFD8036C5
1 changed files with 2 additions and 0 deletions
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src/backends/meta-stage-impl.c
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@ -798,6 +798,8 @@ meta_stage_impl_redraw_view (ClutterStageWindow *stage_window,
{
g_autoptr (GError) error = NULL;
clutter_frame_set_hint (frame, CLUTTER_FRAME_HINT_DIRECT_SCANOUT_ATTEMPTED);
if (meta_stage_impl_scanout_view (stage_impl,
stage_view,
scanout,