Created attachment 140473 [details]
http://www.polepositiongroup.com/img/banners/bg_006.jpg image shows visible horizontal and vertical line artifacts.
Chrome 20.0.1124.4 zoomed in image capture attached, shows clear vertical lines artifacts.
Created attachment 140474 [details]
Compared Firefox 12.0 Mac rendering, I see the same vertical & horizontal artifacts (picture above).
I _don't_ see the artifacts using Firefox 9.0 Mac, so the issue seems to be a regression in libjpeg-turbo that manifests in both Firefox 12, and Chrome 20 http://crbug.com/122951
Created attachment 140477 [details]
No artifacts show up on Firefox 9.0 Mac.
Filed a mozilla bug: https://bugzilla.mozilla.org/show_bug.cgi?id=753235
Looked at Firefox 12.0 again today and I don't see artifacts. Firefox 9.0, 12.0 render fine.
Next punt IFAST vs ISLOW DCT decodes. No artifacts with ISLOW, so backing that out, patch coming ...
Created attachment 141100 [details]
Comment on attachment 141100 [details]
Thank you, and a question: do rebaselines seem slow from your location?
(In reply to comment #9)
> Thank you, and a question: do rebaselines seem slow from your location?
Both of "webkit-patch rebaseline-expectatinos" and garden-o-matic are very slow in Tokyo.
Same from Sydney. Over the last three weeks (it seems to me) these tools became noticeably slower.
You might try running with -v, to see what those tools are doing. I'm not pariticularly famiiliar with either.
(In reply to comment #8)
> (From update of attachment 141100 [details])
Need to add = IMAGE expectations for some additional tests
Created attachment 141107 [details]
(In reply to comment #4)
> Filed a mozilla bug: https://bugzilla.mozilla.org/show_bug.cgi?id=753235
Created attachment 141120 [details]
Patch for landing
Comment on attachment 141120 [details]
Patch for landing
Clearing flags on attachment: 141120
Committed r116636: <http://trac.webkit.org/changeset/116636>
All reviewed patches have been landed. Closing bug.
(In reply to comment #12)
> You might try running with -v, to see what those tools are doing. I'm not pariticularly famiiliar with either.
Filed bug 86171 with a -v trace of a rebaseline of one test: total time was 21m 14sec :/