Created attachment 34601 [details]
screenshot of the bug
Some H264 videos are completely corrupt when played back using textured video . I'm attaching a screenshot of the bug, and a short video which should be enough to reproduce the problem.
I think this is a regression, I will do some more testing and a bisect if possible.
-- chipset: G45 / ICH10R
-- system architecture: 32-bit
-- Linux distribution: Debian unstable
-- Machine or mobo model: Asus P5Q-EM
-- Display connector: DVI
-- xf86-video-intel: 440b4d207b730112169827d0b90b46596659b504
-- xserver: 220.127.116.112
-- mesa: 7e246e6aa63979d53731a591f4caee3651c1d96b
-- drm: cc20ed8100834b7a5129ed403dee6c0e15d82cd1
-- kernel: 18.104.22.168
Video which should reproduce the bug:
Did some more testing and this problem only happens for videos with a certain aspect ratio, file type doesn't matter.
The size of the video in the previous comment is 620 x 480, another video with the same problem is 700 x 576.
I can reproduce this issue on G45 just use the video you uploaded
As I suspected, this is a regression from 2.10.0, bisecting lead to this:
cb06aa32d433f54affe87da2cf964f0308d3c258 is the first bad commit
Author: Daniel Vetter <firstname.lastname@example.org>
Date: Mon Mar 1 22:57:39 2010 +0100
Xv: fixup XvMC on i915
I've accidentally broken i915 xvmc due to alignment constrains that
break my assumption that Y-pitch == UV-pitch*2. Fix this up by consistenly
using dstPitch2 for the Y-pitch. This also unifies the dst pitch
computation slightly, now that the i915 xvmc special case is gone.
Signed-off-by: Daniel Vetter <email@example.com>
(Minor edit to support compilation without INTEL_XVMC defined by
Carl Worth <firstname.lastname@example.org>)
:040000 040000 581e91ddb28f783bf765ea1259d4bcab9488ca75 dd733a90fcc54f47d26e811c416fbb61da888899 M src
*** Bug 27453 has been marked as a duplicate of this bug. ***
As mentioned in the duplicate bug, what matters is the *width* of the video.
Reverting the implicated commit resolves the issue.
Created attachment 34802 [details] [review]
fix chroma pitch on gen4 and later
Can you please test the attached patch?
The patch works for me, thanks!
Solves the issue here as well. Thanks.
on Jan 21, 2017 at 00:05:07.
(provided by the Example extension).