[Bug 110257] Major artifacts in mpeg2 vaapi hw decoding

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110257

--- Comment #2 from Andrew Randrianasulu <randrik at mail.ru> ---
wasn't this fixed by
https://cgit.freedesktop.org/mesa/mesa/commit/?id=d507bcdcf26b417dea201090165af651253b6b11 

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st/va: reverse qt matrix back to its original order
The quantiser matrix that VAAPI provides has been applied with inverse z-scan.
However, what we expect in MPEG2 picture description is the original order.
Therefore, we need to reverse it back to its original order.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110257
Cc: mesa-stable at lists.freedesktop.org
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I can only test with Cinelerra-GG, and my nv92 crad decodes 1080p25 mpeg2 very
slowly (video decoder clock problem) - but for me images were ok!

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