1416974 - images/tiles from qmusic.nl sometimes show up on the top left and flicker

Status: RESOLVED WORKSFORME

(Core :: Graphics: WebRender, defect, P1)

Description

[Darkspirit]

Attachment: 2017-11-14_06-49-29.mp4

Nightly 59 x64 20171113220112 de_DE c616a6fd5e4b20cca139fcdd3957682afaa862b9 @ Debian Testing (KDE, Radeon RX480)
fresh profile: layers.acceleration.force-enabled, gfx.webrender.enabled, gfx.webrender.blob-images

Spinoff from bug 1414691 comment 3.

See attached video. This seemed only to happen with WebRender.

Comment 1

[Darkspirit]

It seems that all those "small" images are in fact 2400x1350px and the most of them fall back (get red with gfx.webrender.highlight-painted-layers) because they get downscaled: bug 1416022.

Maybe I mix too much: In attachment 8927528 [details] from bug 1401665 comment 8 you can see a (duplicate/misplaced) loading circle on the top left for a moment (but which isn't red).

Could it be that this happens only if something is broken? (wrong "clipping"?)

Comment 2

[Darkspirit]

Nightly 59 x64 20171116220410 de_DE a3f183201f7f183c263d554bfb15fbf0b0ed2ea4 @ Windows 10 1709 (Radeon RX480)

Comment 3

[Jerry Shih[:jerry] (UTC+8) (inactive)]

Could you test with the pref "layers.async-pan-zoom.enabled" off?
It looks like we have problem for culling.

Comment 4

[Darkspirit]

(In reply to Jerry Shih[:jerry] (UTC+8) from comment #3)
> Could you test with the pref "layers.async-pan-zoom.enabled" off?
> It looks like we have problem for culling.

No, that didn't help.
Nightly 59 x64 20171117100127 de_DE a77c628829b389ed6ac608eadc88b09eb5115bef @ Debian Testing (KDE, Radeon RX480)
Reproducible in a fresh profile with layers.acceleration.force-enabled;true, gfx.webrender.enabled;true and
layers.async-pan-zoom.enabled;false. It doesn't fix bug 1401665 comment 8 either.
Disabling WebRender fixes this. And disabling layout.display-list.retain (bug 1416055) has no effect.
No crash, nothing critical on about:support.

Comment 5

[Darkspirit]

Also seen at the end of a YouTube video (in cinema mode) when those recommendations for other videos fade in:
https://www.youtube.com/watch?v=9CO6M2HsoIA (via https://twitter.com/lucacarettoni/status/931968707894566913)

Comment 6

[Ethan Lin[:ethlin]]

It seems to be a OMTA problem. I cannot reproduce the qmusic.nl problem with the patch in bug 1419851.

Comment 7

[Darkspirit]

(In reply to Jan Andre Ikenmeyer [:darkspirit] from comment #5)
> Also seen at the end of a YouTube video (in cinema mode) when those recommendations for other videos fade in

Too late. Older try builds are gone. :/

try build from bug 1436058 comment 12:
(disable autoplay, switch to cinema mode and reload)
mozregression --repo try --launch bf1f0e821ba910be62e3443687e6e2a7cf288915 --pref gfx.webrender.all:true startup.homepage_welcome_url:"https://www.youtube.com/watch?v=hxbIAzGTYnQ&t=1h30m16s"
good

I can no longer reproduce the problem described in comment 0 either.