Re: Software Fallback for Web Render Dog Fooding Phase

[Jeff Muizelaar]

I actually put the pref in the landing queue earlier today. It's just
waiting for the tree to open.
https://bugzilla.mozilla.org/show_bug.cgi?id=1673715

-Jeff

On Tue, Oct 27, 2020 at 4:45 PM Jim Mathies  wrote:
>
> On Tuesday, October 27, 2020 at 3:38:32 PM UTC-5, Botond Ballo wrote:
> > On Tue, Oct 27, 2020 at 4:20 PM Jim Mathies  wrote:
> > > To switch to using software fallback, flip the following prefs -
> > >
> > > gfx.webrender.all = true
> > > gfx.webrender.software = true
> > Are there plans to make the second pref show up in about:config? In
> > today's nightly, it looks like it needs to be added manually.
> >
> > Thanks,
> > Botond
>
> Yep, sorry about that. We'll get a default landed this week. For the time 
> being you'll have to create that pref manually.
>
> Regards,
> Jim
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Re: Software Fallback for Web Render Dog Fooding Phase

[Jim Mathies]

On Tuesday, October 27, 2020 at 3:38:32 PM UTC-5, Botond Ballo wrote:
> On Tue, Oct 27, 2020 at 4:20 PM Jim Mathies  wrote: 
> > To switch to using software fallback, flip the following prefs - 
> > 
> > gfx.webrender.all = true 
> > gfx.webrender.software = true
> Are there plans to make the second pref show up in about:config? In 
> today's nightly, it looks like it needs to be added manually. 
> 
> Thanks, 
> Botond

Yep, sorry about that. We'll get a default landed this week. For the time being 
you'll have to create that pref manually.

Regards,
Jim
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Re: Software Fallback for Web Render Dog Fooding Phase

[Botond Ballo]

On Tue, Oct 27, 2020 at 4:20 PM Jim Mathies  wrote:
> To switch to using software fallback, flip the following prefs -
>
> gfx.webrender.all = true
> gfx.webrender.software = true

Are there plans to make the second pref show up in about:config? In
today's nightly, it looks like it needs to be added manually.

Thanks,
Botond
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Software Fallback for Web Render Dog Fooding Phase

[Jim Mathies]

Hey all,

tl/dr; Help us by testing WebRender software fallback, and file bugs against 
the meta 'sw-wr-dogfood'.

WebRender Software Fallback is a project involving the development of a 
software (vs. accelerated) backend for WebRender. Its purpose is to replace the 
old graphics pipelines on platforms where we suffer from various stability 
issues revolving around driver issues, missing rendering features, and as a 
target for the long tail of hardware that doesn't show up in our release 
population in significant numbers. We plan to ship this new backend to targeted 
devices and drivers on various platforms in 2021.

Today we are kicking off a dog fooding phase to accumulate bug reports for 
issues and Firefox profiler profiles for performance issues. If you're 
interested in helping please continue reading!

If you are currently running Nightly, please try temporarily enabling software 
fallback and comparing it to your regular browsing experience.

During testing if you -

1) Run into stability issues, we'd appreciate bug reports with crash signatures.

2) Notice painting glitches or errors, we'd appreciate bug reports with 
screenshots.

3) Detect noticeable performance issues with page interaction and scrolling 
that normally don't occur, we'd appreciate bug reports with Firefox profiles.

We're interested in reports from users who currently qualify for one of the 
WebRender accelerated backends as well as from users who do not. If your device 
currently defaults to one of the older graphics pipelines (in particular, Basic 
Layers) we're very interested in hearing about your experience with software 
fallback. You can identify your default backend by checking about:support's 
Graphics section.

To switch to using software fallback, flip the following prefs - 

gfx.webrender.all = true
gfx.webrender.software = true

The first pref change ensures WebRender is enabled. The second pref switches 
WebRender to use the software fallback backend.

Once you have finished testing, reset both of these preferences to their 
defaults to reset to your default graphics backend. We'd like to ask that you 
run with software fallback for as long as you are comfortable using it and 
report any issues you come across via Bugzilla. File bugs under Core : Graphics 
: WebRender [1] and please block any bugs filed against the meta bug 
'sw-wr-dogfood' [2] so that the Graphics team can find and triage them.

Thanks for the help! 
Platform Graphics Team

[1] 
https://bugzilla.mozilla.org/enter_bug.cgi?product=Core=Graphics%3A%20WebRender
[2] https://bugzilla.mozilla.org/show_bug.cgi?id=sw-wr-dogfood
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Intent to prototype: Mixed Content Auto Upgrading of display content (image, audio, video)

[Christoph Kerschbaumer]

Summary: This security enhancing feature will automatically upgrade mixed 
display content from HTTP to HTTPS if the top-level document is HTTPS. 
Previously this would result in the mixed content indicator. Loads of type 
image, audio, and video will be upgraded by rewriting the URL from http: to 
https: without any fallback if the resource is not available over HTTPS.

Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1633743 

Standard: https://w3c.github.io/webappsec-mixed-content/level2.html 

Platform coverage: All

Preference: security.mixed_content.upgrade_display_content

Devtools bug: No extra work is required for devtools.

Other browsers: Chrome has been shipping that behaviour since Chrome 81; no 
public signal from Apple.

web-platform-tests: There are none but we will add some within 
https://bugzilla.mozilla.org/show_bug.cgi?id=1673594 



Cheers,
  Christoph
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