[Bug 97914] Redraw lag on Ivy Bridge since 1f6dfc9df678
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Tue Mar 28 09:32:46 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=97914
--- Comment #38 from Jean Delvare <jdelvare at suse.de> ---
Indeed Haswell is affected as well ;-)
I just realized that Mesa includes driver-specific code. My previous comment
naively assumed that Mesa was hardware-agnostic. Obviously, if Mesa includes
intel-specific code, then the bug can indeed be in that part of the stack, and
I understand how the issue could not affect other drivers having undergone
similar optimizations. Sorry for the incorrect claim.
That being said, given that this is only a performance optimization, and its
relevance was estimated before fixing the Mesa side of things, maybe it should
be evaluated again with the Mesa changes applied. As I suppose the changes on
the Mesa side will slow things down a bit again, it may no longer be worth it.
At any rate, if the changes are still deemed worth, the ones in Mesa should
have gone in first. As it stands, the net result for users is a regression.
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