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renderer/native: Avoid requeuing the same onscreen for a power save flip

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This is a case that triple buffering will encounter. We don't want it
to queue the same onscreen multiple times because that would represent
multiple flips occurring simultaneously.

It's a linear search but the list length is typically only 1 or 2 so
no need for anything fancier yet.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1441>
This commit is contained in:
Daniel van Vugt 2021-10-26 18:50:50 +08:00 committed by Marge Bot
parent f7b296f2a9
commit fccfaca9fc
1 changed files with 3 additions and 0 deletions
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3
src/backends/native/meta-renderer-native.c
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@ -759,6 +759,9 @@ meta_renderer_native_queue_power_save_page_flip (MetaRendererNative *renderer_na
{
const unsigned int timeout_ms = 100;
if (g_list_find (renderer_native->power_save_page_flip_onscreens, onscreen))
return;
if (!renderer_native->power_save_page_flip_source_id)
{
renderer_native->power_save_page_flip_source_id =