[Resend] Patch: fix regression introduced in intel driver version 2.16.0

[Chris Clayton]

On Sunday 08 January 2012 18:07:01 Chris Wilson wrote:
> On Fri, 6 Jan 2012 14:53:29 +0000, Chris Clayton <chris2553 at googlemail.com> wrote:
> > Hi,
> >
> > I sent this message on 29 December, but I guess all the intel driver
> > developers were busy with (well-earned) Yuletide relaxing. Here it is
> > again with the graphics-related output from lspci added...
> >
> > I recently upgraded from version 2.15.0 of the intel driver to 2.17.0 but
> > found that with the latter a trail of 'droppings' was left in the
> > otherwise blank areas of a konqueror window when an icon was dragged
> > around in the window, under kde-3.5.10. The 'droppings' can be cleaned up
> > by refreshing the window. Investigation showed that the fault is also
> > present in 2.16.0. I cloned the git archive and through bisection
> > identified the change that introduced the problem as:
> >
> > commit ace324e4aa27effdd621156eec03f3f87b610732
> > Author: Eric Anholt <eric at anholt.net>
> > Date:   Tue May 31 23:13:18 2011 -0700
> >
> >     uxa: Simplify BLT solid acceleration for spans filling by only
> > clipping once.
> >
> > Due to subsequent changes that patch cannot be reverted but the attached
> > patch reverts the 2.17.0 driver to its old (2.15.0) behaviour  and
> > eliminates the 'droppings'.
>
> Should be fixed with
>
> commit 429a36f7481b9bfd5ed137642d2916d69a713557
> Author: Chris Wilson <chris at chris-wilson.co.uk>
> Date:   Fri Dec 9 09:54:12 2011 +0000
>
>     uxa: Fix clip processing for uxa_fill_spans()
>
>     Fixes regression from e0066e77e026b0dd0daa0c3765473c7d63aa6753
>     (uxa: Simplify Composite solid acceleration for spans by only clipping
>     once) [2.15.901]
>
>     Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43649
>     Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
>
> Can you confirm by testing with master?

Yes, a driver built from a clone of git://anongit.freedesktop.org/xorg/driver/xf86-video-intel taken 
a few minutes ago does not exhibit the problem I reported.

Thanks, Chris.

Chris
> -Chris

-- 
The more I see, the more I know. The more I know, the less I understand. Changing Man - Paul Weller