SkyRaT <firstname.lastname@example.org> reported this bug in the Debian BTS recently.
He's running Xserver 220.127.116.111 with Intel 2.6.1 on 2.6.26-1-amd64 on
a "Integrated Graphics Chipset: Intel(R) G45/G43".
"This issue arose after the latest upgrade and was not present before.
One can clearly see, when there is a red object in a playing video,
and has the window enlarged or placed on the full screen, the red
object is being "pixelized" instead of blurred by the bilinear
filter as other colors. For sure, the red component is in almost
every color, so the whole screen is being influenced, but it is not
Config and Log available at
What's the working version of xserver and xf86-video-intel?
Created attachment 22443 [details]
visible problem with filtering of red color component
Created attachment 22656 [details]
xvideo output - more visible problem
the previous screenshot was made using the "-vo gl" option to mplayer.
The current one was made using "-vo xv"
Rene isn't sure which version was working fine before this regression appeared. 2.5.99 was probably fine.
I've had this problem ever since I started using this driver (about version 2.2.0). The overlay video has always worked much better for me (no tearing / red-pixelation).
Author: Eric Anholt <email@example.com>
Date: Wed Aug 5 12:45:16 2009 -0700
Fix sampler indexes on i965 planar video.
We only set up one sampler, because all of our sampling is the same. By
using a non-zero index for the other two samplers, we'd dereference (likely)
zeroed data, resulting in using NEAREST filtering. This was a regression in
40671132cb3732728703c6444f4577467fa9223f which incidentally switched from
having 6 samplers to 1.
Bug #22895, #19856