811150 - WebGL content doesn't return after phone is locked and unlocked

Status: RESOLVED INCOMPLETE

(Firefox for Android Graveyard :: Toolbar, defect)

Description

[Dave Evans]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11

Steps to reproduce:

Using my Galaxy Nexus Phone:
Load this page: http://apps.playcanvas.com/playcanvas/halloween/mobile
Wait until the application is loaded and two animated characters are displayed
Lock the phone using the hardware button on the phone.
Unlock the phone.


Actual results:

After unlocking the phone, the WebGL content on the page is no longer visible.



Expected results:

The page should be in the same state that it was before locking the phone. i.e. the characters should be displayed animating as before.

Comment 1

[Kevin Brosnan [Ex-Mozilla]]

What version of Firefox? Is this different using a nightly build? http://nightly.mozilla.org

Comment 2

[Dave Evans]

Tested on stable (16) and beta (17) and occurs in both. I'll check nightly.

Comment 3

[Dave Evans]

Occurs in nightly (19.0a1) too.

Comment 4

[Paul Feher]

Using Nightly 19.0a1 (2012-11-14) this is reproducible on:
Devices: Galaxy Nexus(Android 4.1.2), Samsung Galaxy Tab (Android 3.1.1)

But not reproducible on:
Samsung Galaxy R (Android 2.3.4)

Comment 5

[Benoit Jacob [:bjacob] (mostly away)]

That indicates that locking/unlocking causes WebGL context loss, which is normal behavior. WebGL content has to handle webglcontextlost/restored events to recover.

This WebGL page does handle these events:
http://www.khronos.org/registry/webgl/sdk/demos/google/san-angeles/index.html

Does it recover on this phone?

Comment 6

[Paul Feher]

The WebGL page (http://www.khronos.org/registry/webgl/sdk/demos/google/san-angeles/index.html) is not displayed on any device Samsung Galaxy R (Android 2.3.4) or Samsung Galaxy Tab (Android 3.1.1) using latest Nightly.

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.