1027598 - OMTC causes parts of chrome/content to appear blank

Status: RESOLVED DUPLICATE of bug 987497

(Core :: Graphics: Layers, defect)

Description

[Stuart Cook]

Attachment: Screen Shot 2014-06-19 at 10.08.52 PM.png

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:31.0) Gecko/20100101 Firefox/31.0 (Beta/Release)
Build ID: 20140610163407

Steps to reproduce:

MacBook Pro
13-inch, Mid 2009
NVIDIA GeForce 9400M 256 MB
OS X 10.8.5

Launch Aurora after updating to version 32.
Open preferences, or Twitter.


Actual results:

Large parts of chrome and content intermittently appear white, especially during scrolling.


Expected results:

All chrome and content should continue to display as normal.

Comment 1

[Stuart Cook]

Disabling layers.offmainthreadcomposition.enabled causes the problem to disappear.

Comment 2

[Markus Stange [:mstange]]

With layers.offmainthreadcomposition.enabled set to true and layers.componentalpha.enabled set to false, does this still reproduce? If so, this is probably the same bug as bug 987497.

Comment 3

[Stuart Cook]

With layers.offmainthreadcomposition.enabled=true and layers.componentalpha.enabled=false, the problem disappears.

(It is replaced by more subtle anti-aliasing glitches, which I assume are known.)

Comment 4

[Markus Stange [:mstange]]

Thanks. Let's continue this in bug 987497 then.