[Wayland-bugs] [Bug 763350] drawing performance worse than X

[gtk+ (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=763350

--- Comment #39 from Christian Hergert <christian at hergert.me> ---
Created attachment 324154
  --> https://bugzilla.gnome.org/attachment.cgi?id=324154&action=edit
avoid dropping our shm-based surface on configure-event

Here is an easy one.

The memfd_create() was getting called not because the committed buffer had not
yet been returned, but simply because a configure-event came in due to
animation widget resizing. We unconditionally dropped the surfaces when we
could reuse the existing ones if sizing did not actually change.

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