[Bug 80033] [sna] Occasional artifacts on window borders (theme dependent)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80033

b3nmore at googlemail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |ASSIGNED

--- Comment #19 from b3nmore at googlemail.com ---
(In reply to comment #18)
> One step forward, one step back. Replace one source of random uninitialised
> data with a deterministic one instead!
> 
> Let's try:
> 
> commit e52f917a2370026073ed6851161393a69ee94abe
> Author: Chris Wilson <chris at chris-wilson.co.uk>
> Date:   Wed Jun 18 10:18:26 2014 +0100
> 
>     sna: Use nxm tiled blits for small regions of large tiles
>     
>     If the region we are blitting is either narrow or short, we may be able
>     to construct a tiling pattern out of a large pixmap.
>     
>     In the process, spot a regression due to
>     
>     commit 542aeca6e67fc64f9133ca3e27ac8eca28af6d25
>     Author: Chris Wilson <chris at chris-wilson.co.uk>
>     Date:   Tue Jun 17 12:26:30 2014 +0100
>     
>         sna: Tweak creation 8x8 tiled patterns
>     
>     which copied too much from the source line.
>     
>     References: https://bugs.freedesktop.org/show_bug.cgi?id=79888
>     Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

Again much harder to catch, but bottom stripes are still there. All sorts of
pattern appear (I'm wondering where the colors come from), but the period is
8px (where applicable).

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