847348 - Device rotations suck (especially on Adreno GPUs)

Status: RESOLVED INCOMPLETE

(Firefox for Android Graveyard :: Toolbar, defect)

Description

[Aaron Train [:aaronmt]]

Attachment: about:mozilla (Nightly 03/04)

Currently when one rotates the device on very simple pages (about:mozilla) or about:privatebrowsing, there is a whole slew of resizing and work going on and what the user sees is very noticeable and jarring.

http://mozilla.org is another good example; our rotation and repaint looks poorly and is slower compared to Chrome

Comment 1

[Aaron Train [:aaronmt]]

Nexus 4  Adreno 320; really slow
Samsung Galaxy III; kind of slow
Samsung Galaxy Note; slowish

Comment 2

[Brian Nicholson (:bnicholson)]

A big part of the slowdown is likely the reinflation of about:home, which we do all the time - regardless of whether about:home is actually visible. Bug 838793 removes the about:home view when it's not being shown, so it's worth keeping an eye on that to see if it fixes (or at least helps) this bug.

Comment 3

[Brad Lassey [:blassey] (use needinfo?)]

not tracking on the assumption that bug 838793 mitigates

Comment 4

[Aaron Train [:aaronmt]]

I tried the fix/APK in bug 838793, on my Nexus 4 and Note but couldn't determine if there was any difference between Nightly and it; I just used about:mozilla and rotated back and forth and it looks the same to me.

Comment 6

[donrhummy]

(In reply to Brian Nicholson (:bnicholson) from comment #2)
> A big part of the slowdown is likely the reinflation of about:home, which we
> do all the time - regardless of whether about:home is actually visible. Bug
> 838793 removes the about:home view when it's not being shown, so it's worth
> keeping an eye on that to see if it fixes (or at least helps) this bug.

No it's not. Even google.com's empty mobile page is super slow. Go to google.com and rotate it. You'll still see that huge 1-2 second lag (on a quad-core phone with an Adreno 320 GPU).

Comment 7

[BMO Automation]

We have completed our launch of our new Firefox on Android. The development of the new versions use GitHub for issue tracking. If the bug report still reproduces in a current version of [Firefox on Android nightly](https://play.google.com/store/apps/details?id=org.mozilla.fenix) an issue can be reported at the [Fenix GitHub project](https://github.com/mozilla-mobile/fenix/). If you want to discuss your report please use [Mozilla's chat](https://wiki.mozilla.org/Matrix#Connect_to_Matrix) server https://chat.mozilla.org and join the [#fenix](https://chat.mozilla.org/#/room/#fenix:mozilla.org) channel.