[Bug 95414] [SNA HSW] Corruption in OpenGL video output (DRI2 + TearFree)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95414

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #25 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 7aa6ca61ee5546d74b76610894924cdb0d4a1af0
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Mon Nov 7 16:52:04 2016 +0000

    drm/i915: Mark CPU cache as dirty when used for rendering

    On LLC, or even snooped, machines rendering via the GPU ends up in the CPU
    cache. This cacheline dirt also needs to be flushed to main memory when
    moving to an incoherent domain, such as the display's scanout engine.
    Mostly, this happens because either the object is marked as dirty from
    its first use or is avoided by setting the object into the display
    domain from the start.

I have an idea for the DRI2 patch, might be worth opening a fresh bug for that
incomplete frame glitch. In fact, lets do that if you want to do some more
testing...

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