Commits on Jun 27, 2024

1. Wayland: minimize surface commits and limit them to the main thread …

   Before of this patch, as explained in the usual
   commented-wall-of-text-longer-than-the-actual-patch-itself™, due to the
   multithreaded nature of the Wayland thread, it was possible to commit a
   surface while the renderer was doing stuff, which was _very_ wrong.
   
   Initially the consequences of such a sin weren't obvious but, now that
   explicit synchronization is becoming more and more common, we can't
   commit a buffer randomly without basically guaranteeing a nasty, nasty
   crash (and we should have avoided commits altogether in the first place
   to ensure atomic surface updates).
   
   We now only trigger a commit _in the main thread_ when low processor usage
   mode is on _and_ if we know that we won't be rendering anything as, due to
   its intermittent nature, it makes "legacy" (pre xdg_wm_base v6) frame
   callback based suspension quite annoying.

   

   Riteo committed Jun 27, 2024
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