1403842 - Browser's UI is disappeared while playing a video at windows

Status: RESOLVED WORKSFORME

(Core :: Graphics: WebRender, defect)

Description

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

When I play a video from youtube at windows, the URL bar and other buttons will disappear. What I can see is the background color for the UI area.
There is no problem when we turn off layers-free.
It looks like a clipping issue, but it only occurs at windows. I don't see this issue at mac.

Comment 1

[Sotaro Ikeda [:sotaro]]

Hmm, I could not reproduce the problem on my windows pcs with latest m-c.

Comment 2

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

If I remove the ScrollingLayersHelper[1], the UI will not disappear.

[1]
https://dxr.mozilla.org/mozilla-central/rev/756e10aa8bbd416cbc49b7739f78fb81d5525477/gfx/layers/wr/WebRenderLayerManager.cpp#341

That's why I think it's clipping related problem.

Comment 3

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

Attachment: intel cpu + nv video card. No xul ui.

Comment 4

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

Attachment: ryzen + amd video card. Has xul ui, but there are a lot of black area.

Comment 5

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

I test with 2 windows pc. They show different problems.

1) intel cpu + nv 1070m => No ui.
attachment 8913138 [details]

2) ryzen cpu + amd video card. => Has ui, but there are a lot of black area.
attachment 8913146 [details]

Comment 6

[Sotaro Ikeda [:sotaro]]

:jerry, do you still see the problem?

Comment 7

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

No, I don't see the problem again with today's build.