1568799 - tab flashing when webrender on (Intel HD Graphics 4000)

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect, P3)

Description

[Maros Ivanco]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0

Steps to reproduce:

about:config
I accept the risk!
Toggle gfx.webrender.enabled to true
restart browser

Windows 10

Actual results:

Tab labels flash.

Expected results:

No flashing.

Comment 1

[Darkspirit]

Thanks for the report! Please open about:support, click on "Copy text to clipboard", paste it into a text file and upload it here (Attach File).
And please also try out Nightly to test whether the problem is fixed or still occurring. Thanks! :)

Comment 2

[Nicolas Silva [:nical]]

Likely the intel flashing bug that Jeff and a few others have been looking into. It'd be good to at least confirm this is happening on an intel GPU with about:support info.

Comment 3

[Maros Ivanco]

Attachment: about-support.txt

Comment 4

[Maros Ivanco]

Yes, Intel GPU. See attached about-support.txt.

Comment 5

[menzo2003]

I also use the Intel HD Graphics 4000 and have the same problems. I'm on firefox 70b3

Comment 6

[menzo2003]

Attachment: about-supporting.txt

Comment 7

[Maros Ivanco]

Things got much worse in 69.0.
I can also see the huge flashing black rectangles in the page content (e.g. MDN).
IMHO, it renders webrender pretty unusable, even for tests.

Comment 8

[Jessie [:jbonisteel] pls NI]

Maros - curious to know if you still see this bug happening?

Comment 9

[Wayne Mery (:wsmwk)]

menzo do you see this with current beta?

Comment 10

[menzo2003]

(In reply to Wayne Mery (:wsmwk) from comment #9)

menzo do you see this with current beta?

If I set it to true it seems not to turn on:

Compositing Direct3D 11 (Advanced Layers)

Decision Log
HW_COMPOSITING
force_enabled by user: Force-enabled by pref
WEBRENDER
opt-in by default: WebRender is an opt-in feature
available by user: Force enabled by pref
unavailable-no-gpu-process by runtime: GPU Process is disabled
WEBRENDER_QUALIFIED
blocked by env: Battery Intel requires os compositor
WEBRENDER_COMPOSITOR
unavailable by env: No DirectComposition usage
WEBGPU
disabled by default: Disabled by default
blocked by runtime: WebGPU can only be enabled in nightly

Comment 11

[Maros Ivanco]

Maros - curious to know if you still see this bug happening?

I do not experience the flashing anymore.