1669804 - Update from 82.0b6 to 82.0b7 results "Direct3D 11". It should be "Direct3D 11 (Advanced Layers)"

Status: RESOLVED WONTFIX

(Core :: Graphics: Layers, defect, P2)

Description

[Alice0775 White]

Using GPU which is not WEBRENDER_QUALIFIED.

Steps To Reproduce:

1. Start Firefox82.0b6 with new profile
   --- observe Graphics section of about:support
   WebRender is enabled as expected due to early beta
2. And update to Firefox82.0b7(or later) with the same profile of step1
   --- observe Graphics section of about:support
   Graphics compositing is "Direct3D 11"
3. Start Firefox82.0b7 with new profile
   --- observe Graphics section of about:support
   Graphics compositing is "Direct3D 11 (Advanced Layers)"

Actual Results:
If update b6 to b7(or later) "Advanced Layers" is disabled.
It means that layers.mlgpu.sanity-test-failed doesn't seem to be initializing (retesting).

After removing layers.mlgpu.sanity-test-failed from prefs.js then "Advanced Layers" is enabled as expected.

Expected Results:
"Advanced Layers" should be enabled.

Comment 1

[Alice0775 White]

Attachment: about:support of Firefox82.0b6 with new profile

Comment 2

[Alice0775 White]

Attachment: about:support of Firefox82.0b7 updated from Firefox82.0b6 with the same profile

Comment 3

[Alice0775 White]

Attachment: about:support of Firefox82.0b7 with new profile

Comment 4

[Andrew Osmond [:aosmond] (he/him)]

Pushlog: https://hg.mozilla.org/releases/mozilla-beta/pushloghtml?fromchange=2f1726b43eab2410f491bfa9f7e7b0e08cbf9466&tochange=c26cb74e7bcb7d18bbd54b4bf2854be9ec47b03b

Bug 1668000 clearly. Somehow.

Comment 5

[Andrew Osmond [:aosmond] (he/him)]

Never mind, early beta ended. Although I don't see it in the pushlog which is strange. But according to the scheduled this is expected with an Evergreen "Beta 6 early betas end October 2".

WRT to losing advanced layers, I'm not sure how the sanity test works, I'll take a quick look.

Comment 6

[Andrew Osmond [:aosmond] (he/him)]

Looks like we could explicitly disable it if we ever gave you WR:
https://searchfox.org/mozilla-central/source/toolkit/components/gfx/SanityTest.jsm#215

We probably should be ensuring we do something similar to:
https://searchfox.org/mozilla-central/source/gfx/thebes/gfxWindowsPlatform.cpp#383

For early beta switchover.

Comment 7

[Julien Cristau [:jcristau]]

The pushlog from b6 to b7 is https://hg.mozilla.org/releases/mozilla-beta/pushloghtml?fromchange=FIREFOX_82_0b6_RELEASE&tochange=FIREFOX_82_0b7_RELEASE which does include https://hg.mozilla.org/releases/mozilla-beta/rev/71846e999adc79096a0eb3f8ac8ac280ea132d6f

Comment 8

[Jeff Muizelaar [:jrmuizel]]

I think this might be happening for users that get blocked by bug 1678942