[Bug 88889] [ILK] Triangle tearing and sampler corruption (kwin full-scene repaint)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88889

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[ILK] Triangle tearing      |[ILK] Triangle tearing and
                   |                            |sampler corruption (kwin
                   |                            |full-scene repaint)

--- Comment #7 from Chris Wilson <chris at chris-wilson.co.uk> ---
What it looks like is the compositor is sampling the updated pixmaps in the
middle of a cache flush. The triangle artifacts is symptomatic of how OpenGL
renders, but the actual corruption looks to be at the individual EU/thread
level i.e. sampling. Given that there is supposed to be a full cache flush
between X rendering and the compositor (and vice versa), that is surprising!

Can you please try Option "AccelMethod" "blt"? Could you also find a really old
version of mesa, say even 9.0 or 10.0? Could you try a few different kernels?

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20150201/c72b4413/attachment.html>