[Bug 101259] General artifacs shortly after CPU warming up

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101259

--- Comment #12 from liang <clamfly at sina.com> ---
I've tried bisecting, and found this:

fbb32971651e7453498e082cabdd92d789417ab2 is the first bad commit
commit fbb32971651e7453498e082cabdd92d789417ab2
Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Sun Apr 2 23:35:27 2017 -0700

    i965/drm: Drop GEM_SW_FINISH stuff.

    This is only useful when doing an incoherent CPU mapping of the current
    scanout buffer.  That's a terrible plan, so we never do it.  We always
    use an uncached GTT map.

    So, this is useless.  Drop the code.

    Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
    Acked-by: Jason Ekstrand <jason at jlekstrand.net>

:040000 040000 06f502cb5d96f477bf6fb20da5628d456ece07e2
1c0e3b96b6de0f8182f87068ff0454540cf77d6f M src


As I said before, 17.0.x is not perfect, it still has few artifacts, very hard
to noticed though. But after that commit, things got much worse.

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