[Bug 79888] SNA, regression: chromium UI sometimes doesn't redraw

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79888

--- Comment #14 from Alexander Mezin <mezin.alexander at gmail.com> ---
(In reply to comment #13)
> (In reply to comment #12)
> > Unredirection is configurable, and usually I had that option enabled, but...
> > https://git.reviewboard.kde.org/r/111476/
> 
> That's asinine! The reason they give is that flash using ShmPutImage is not
> syncing to the screen is good enough reason to force everything to be copied
> again. And they justify that because they don't understand how compositors
> and display servers work...
> 
> Seriously, just use TearFree and turn off KDE's vsync.

Not only flicker. There was many bugreports about kwin and even client
applications crashing when unredirection is enabled. Though I've never seen any
crashes myself, on old laptop with HD 3000, on new with HD 4400.

Last time i tried TearFree it signigicantly slowed games down (with working
fullscreen unredirection and xrender compositing). Ok, I'll give it another
try.

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