Created attachment 534185 [details] Screenshot This is similar to bug 416217, although the white stripes I saw were much thinner (see attached screenshot). STR: * Open http://upload.wikimedia.org/wikipedia/commons/6/6e/USGS_Rikers_Island.png The image does not load smoothly for me, and I tend to get a stripe where the progressive loading pauses and where the loading jumps to when it resumes. Zooming the image to 100% removes the bars. They're still gone when I zoom back out. Switching to another tab and back to the image also removes the bars.
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:6.0a1) Gecko/20110520 Firefox/6.0a1 ATI Technologies Inc. -- ATI Radeon HD 6750M OpenGL Engine -- 2.1 ATI-1.6.34 GPU Accelerated Windows 1/1 OpenGL
I don't see white bars at , the image linked in bug 416217.  http://www.mozilla.org/quality/browser/front-end/testcases/drag-drop/drag-bigimg-from-browser/p43886.jpg
I ran into this bug while surfing porn :( It seems to only happen at certain scaling factors. Here's a testcase that includes a scaling factor, to make it easier to reproduce: http://www.squarefree.com/bug658731/
Is this Mac OS X only? I cannot reproduce on Windows 7.
I believe so, yes.
Joe, this is a regression that we'd like to get a handle on for Aurora. Can you help us out?
I don't think this is a regression. At least, it appears in Firefox 4 and probably in 3.x as well. I question it being tracked for fx6.
Agreed. The tracking as based on the assumption that this was a recent regression. Minus unless we find out that it is.
I can reproduce in Firefox 4 as well. I guess it's just a coincidence that jlebar and both discovered it last week. Sorry for the incorrect nomination.
My theory is that this is caused by the larger filter kernel that CoreGraphics uses when sampling images. i.e. we are sampling from a larger area than we invalidate.
Same as / similar to bug 522687?