139599 2014-12-12 15:01:18 -0800 fast/images/animated-gif-body-outside-viewport.html is flaky 2015-01-06 14:37:27 -0800 1 1 1 Unclassified WebKit Tools / Tests 528+ (Nightly build) Unspecified Unspecified RESOLVED WONTFIX https://bugs.webkit.org/show_bug.cgi?id=139435 P2 Normal --- 1 ap cdumez cdumez commit-queue dino kling koivisto simon.fraser oldest_to_newest 1055302 0 ap 2014-12-12 15:01:18 -0800 This test randomly fails on several Mac WK1 bots: http://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=fast%2Fimages%2Fanimated-gif-body-outside-viewport.html -PASS isBackgroundAnimated is false +FAIL isBackgroundAnimated should be false. Was true. 1055303 1 ap 2014-12-12 15:03:38 -0800 Marked as flaky in r177239. 1055376 2 243241 cdumez 2014-12-12 19:30:46 -0800 Created attachment 243241 WIP Patch 1055391 3 243247 cdumez 2014-12-12 22:54:12 -0800 Created attachment 243247 Patch 1055504 4 243247 commit-queue 2014-12-14 11:01:58 -0800 Comment on attachment 243247 Patch Clearing flags on attachment: 243247 Committed r177265: <http://trac.webkit.org/changeset/177265> 1055505 5 commit-queue 2014-12-14 11:02:04 -0800 All reviewed patches have been landed. Closing bug. 1056044 6 ap 2014-12-16 12:15:47 -0800 Sadly, the test is still flaky: https://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fimages%2Fanimated-gif-body-outside-viewport.html 1056256 7 cdumez 2014-12-16 20:38:29 -0800 Hmm, it seems that this is an actual failure on WK1. On WebKit1, it seems FrameView::paintsEntireContents() return true. As a result, FrameView::windowClipRect() returns [0, 0, 1600, 1200] (this is the size of the content, *including* what is not visible) instead of the expected [0, 0, 800, 600]. This means we don't currently don't always properly detect if animated gifs are outside the viewport on WK1. 1056257 8 cdumez 2014-12-16 20:41:21 -0800 (In reply to comment #7) > Hmm, it seems that this is an actual failure on WK1. On WebKit1, it seems > FrameView::paintsEntireContents() return true. As a result, > FrameView::windowClipRect() returns [0, 0, 1600, 1200] (this is the size of > the content, *including* what is not visible) instead of the expected [0, 0, > 800, 600]. This means we don't currently don't always properly detect if > animated gifs are outside the viewport on WK1. Looks like this was done by Andreas a long time ago: https://bugs.webkit.org/show_bug.cgi?id=49375 1056259 9 simon.fraser 2014-12-16 20:56:55 -0800 (In reply to comment #7) > Hmm, it seems that this is an actual failure on WK1. On WebKit1, it seems > FrameView::paintsEntireContents() return true. As a result, I think paintsEntireContents() should only be true in a layer-backed WK1 view (if the WebHTMLView has its own layer). 1056262 10 cdumez 2014-12-16 21:12:50 -0800 (In reply to comment #9) > (In reply to comment #7) > > Hmm, it seems that this is an actual failure on WK1. On WebKit1, it seems > > FrameView::paintsEntireContents() return true. As a result, > > I think paintsEntireContents() should only be true in a layer-backed WK1 > view (if the WebHTMLView has its own layer). Hmm, it seems to be true when I run MiniBrowser: Tools/Scripts/run-minibrowser --debug However, it seems to be false when running the layout tests so this is not the source of the failure. 1056265 11 cdumez 2014-12-16 21:26:15 -0800 Hmm, what seems to happen locally (with WK1 DumpRenderTree) is that RenderElement::newImageAnimationFrameAvailable() never gets called. As a result, RenderView::addRendererWithPausedImageAnimations() is never called and we never set the 'hasPausedImageAnimations' flag on the renderer. Does anyone have an idea why newImageAnimationFrameAvailable() wouldn't get called with WK1/DRT? The function gets called on WK2/WKTR and the test passes just fine there. 1056268 12 cdumez 2014-12-16 21:58:30 -0800 I found an interesting comment in RenderLayerBacking::updateImageContents(): // Image animation is "lazy", in that it automatically stops unless someone is drawing // the image. So we have to kick the animation each time; this has the downside that the // image will keep animating, even if its layer is not visible. image->startAnimation(); Is WK1 using RenderLayerBacking? If not, then it is likely the image is not being animated outside the viewport simply because it is not being drawn. In this case, this would mean that Antti's optimization only makes sense on WK2. That would make my animated GIF layout tests wk2-specific. 1056341 13 simon.fraser 2014-12-17 09:24:59 -0800 MiniBrowser does layer-backing on Yosemite, because it has a blurred toolbar. 1056356 14 cdumez 2014-12-17 10:01:20 -0800 (In reply to comment #12) > I found an interesting comment in RenderLayerBacking::updateImageContents(): > // Image animation is "lazy", in that it automatically stops unless someone > is drawing > // the image. So we have to kick the animation each time; this has the > downside that the > // image will keep animating, even if its layer is not visible. > image->startAnimation(); > > > Is WK1 using RenderLayerBacking? If not, then it is likely the image is not > being animated outside the viewport simply because it is not being drawn. > > In this case, this would mean that Antti's optimization only makes sense on > WK2. That would make my animated GIF layout tests wk2-specific. +dino in cc as it seems he added this comment. 1059168 15 cdumez 2015-01-06 14:37:27 -0800 Animated image throttling behaves differently on WebKit1 than on WebKit2 and our layout test infrastructure does not work for WebKit1. This test is WK2 specific. 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