1802844 - [AMD RX 6600] H264 playback is artifacted / pixelized

Status: RESOLVED FIXED

(Core :: Audio/Video: Playback, defect)

Description

[Martin Stránský [:stransky] (ni? me)]

AMD RX 6600, this clip https://www.youtube.com/watch?v=HkIKd6Ps5sc
After YT load and video playback start, video is highly pixelized in ~ 2 sec.
Only after video playback start, rewind is OK.

Comment 1

[Martin Stránský [:stransky] (ni? me)]

Attachment: Screencast from 11-28-2022 09:53:00 AM.webm

Comment 2

[Martin Stránský [:stransky] (ni? me)]

It's reproducible from YT. Can be reproduced by playing local downloaded clip but it takes more attempts.

Comment 3

[Martin Stránský [:stransky] (ni? me)]

Looks like AMD specific, unable to reproduce on Intel UHD 630.

Comment 4

[Martin Stránský [:stransky] (ni? me)]

Seems to be fixed by disabled zero-copy dmabuf rendering. It also fixes Bug 1779186. Will post patches for it.

Comment 5

[Martin Stránský [:stransky] (ni? me)]

It's interesting it affects new AMD hardware and H.264 decoding only.

Comment 6

[Martin Stránský [:stransky] (ni? me)]

(In reply to Martin Stránský [:stransky] (ni? me) from comment #4)

Seems to be fixed by disabled zero-copy dmabuf rendering. It also fixes Bug 1779186. Will post patches for it.

I was wrong, surface copy does not fix it.

Comment 7

[Martin Stránský [:stransky] (ni? me)]

Looks like navi2x family has some VA-API issues:

https://bugzilla.redhat.com/show_bug.cgi?id=2166118
https://gitlab.freedesktop.org/mesa/mesa/-/issues/8217

so we may disable it by default.

Comment 8

[Martin Stránský [:stransky] (ni? me)]

Attachment: Bug 1802844 [Linux] Configure FEATURE_HW_DECODED_VIDEO_ZERO_COPY on Linux r?emilio

Comment 9

[Martin Stránský [:stransky] (ni? me)]

Attachment: Bug 1802844 [Linux] Use gfxVars::HwDecodedVideoZeroCopy instead of preference r?alwu

Depends on D171553

Comment 10

[Martin Stránský [:stransky] (ni? me)]

Attachment: Bug 1802844 [Linux] Disable HW_DECODED_VIDEO_ZERO_COPY on AMD hardware r?aosmond

Depends on D171554

Comment 11

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/7e4e013e1f12
[Linux] Configure FEATURE_HW_DECODED_VIDEO_ZERO_COPY on Linux r=emilio
https://hg.mozilla.org/integration/autoland/rev/a308651d8ecb
[Linux] Use gfxVars::HwDecodedVideoZeroCopy instead of preference r=alwu
https://hg.mozilla.org/integration/autoland/rev/80ef2f4a6e5d
[Linux] Disable HW_DECODED_VIDEO_ZERO_COPY on AMD hardware r=aosmond

Comment 12

[Cristina Horotan [:chorotan]]

https://hg.mozilla.org/mozilla-central/rev/7e4e013e1f12
https://hg.mozilla.org/mozilla-central/rev/a308651d8ecb
https://hg.mozilla.org/mozilla-central/rev/80ef2f4a6e5d