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Date: Tue, 06 Nov 2012 13:35:50 -0800
From: David Flanagan <dflana...@mozilla.com>
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subject: Re: About the problem with the "images appear and disappear"
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Nice work isolating this, John! \o/

     David

On 11/6/12 9:20 AM, John Shih wrote:
> Hi all,
> As I trace the bug of Bug 799711 - [Clock] Update analog clock face background to avoid banding issues and UI flashing
> this is a bug that when add a alarm in a analog clock page, the screen will twinkle during page loading
>
> And I found that it is actually caused by the limit of memory of image-decoding
> this modification is in the mozilla-aurora revision:380077b562e6af7ba12f2375e36cbc8ffc8bf32b
> please see https://github.com/mozilla/releases-mozilla-aurora/commit/380077b562e6af7ba12f2375e36cbc8ffc8bf32b
>
> I've both test with:
> 1. checkout the previous revision (0dd6e9f76c1083603cc541601a5677ade6bc2691)
> (please see https://github.com/mozilla/releases-mozilla-aurora/commit/0dd6e9f76c1083603cc541601a5677ade6bc2691)
>
> 2.remove the change manually (that is, remove the pref("image.mem.max_decoded_image_kb", 5120) in gecko/b2g/app/b2g.js file)
>
> These two ways both works (the page loading problem won't happen anymore)
>
> And I think there are some bugs relate to this issue, such as
> Bug 804055 - Launching of Solitaire app from marketplace - missing background image, constant card flickering, and many UI parts missing
> Bug 807143 - images appear and disappear
> Bug 803049 - [Gallery] Previews appear and disappear
>
> And I also file this bug in bugzilla, please see
> Bug 809077 - The memory limit of image decoding will cause the image loading with twinkling
>
> Thanks,
> John Shih
> Intern of Mozilla Taiwan
>
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