Closed Bug 859231 Opened 9 years ago Closed 8 years ago

Enable high-quality image scaler in every case.

Categories

(Core :: ImageLib, defect)

defect
Not set
normal

Tracking

()

RESOLVED DUPLICATE of bug 795072

People

(Reporter: blind_box2, Unassigned)

Details

Attachments

(2 files)

User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:23.0) Gecko/20130407 Firefox/23.0
Build ID: 20130407030841

Steps to reproduce:

I visited this site.

https://bug486918.bugzilla.mozilla.org/attachment.cgi?id=657754


Actual results:

The high-quality image scaler is not working.


Expected results:

The scaler should have worked. Right click > view image > zoom out by itself works.
Depends on: 486918
OS: Windows 7 → All
Hardware: x86 → All
Version: Trunk → unspecified
I did a few more testing and realized this bug might be related to https://bugzilla.mozilla.org/show_bug.cgi?id=795072 .

Having only a single picture to downscale, as shown in this attachment, makes the HQ scaler work. Having two pictures in an HTML for downscaling, makes the HQ scaler fail.
Attachment #734541 - Attachment mime type: text/plain → text/html
Depends on: 795072
Component: DOM: Core & HTML → ImageLib
Attachment #734541 - Attachment description: single image scaling → image scaling working with one image
Attachment #735023 - Attachment mime type: text/plain → text/html
Note sure if this is the correct bug, but let me add another example:

GOOD: https://github.com/joyent/node/commits/master
BAD: https://github.com/silverwind/Droppy/commits

Github uses downscaled avatar images here, and it seems that if one image appears a certain amount of times, the downscaler doesn't kick in at all for it. In case node's commit log doesnt show smooth downscaling, view any other commit log with many different authors.
In the link here https://bugzilla.mozilla.org/show_bug.cgi?id=486918#c289 (beware, excessive memory-usage!)
some images are scaled, some are not.
So just having more than one image doesn't break the scaling.
Status: UNCONFIRMED → RESOLVED
Closed: 8 years ago
No longer depends on: 795072, 486918
Resolution: --- → DUPLICATE
Duplicate of bug: 795072
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