Compositing LayoutTests failing on Chromium Mac

• Component: WebCore Misc.
• Status: RESOLVED FIXED

[Steve Block]

layers-inside-overflow-scroll.html overflow-compositing-descendant.html scroll-ancestor-update.html self-painting-layers.html 

See http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=compositing%2Flayers-inside-overflow-scroll.html%2Ccompositing%2Foverflow%2Foverflow-compositing-descendant.html%2Ccompositing%2Foverflow%2Fscroll-ancestor-update.html%2Ccompositing%2Fself-painting-layers.html

From the time that the failures started, it looks like this is due to http://trac.webkit.org/changeset/100360, perhaps due to unexpected fallback paths for expected results?

[Steve Block]

Committed r100430: <http://trac.webkit.org/changeset/100430>

[James Robinson]

They just needed baselines: http://trac.webkit.org/changeset/100557

[Steve Block]

Some tests are still failing on 10.6 ...

compositing/layer-creation/spanOverlapsCanvas.html
compositing/layers-inside-overflow-scroll.html
compositing/self-painting-layers.html
compositing/video-page-visibility.html
compositing/geometry/video-opacity-overlay.html
compositing/geometry/video-fixed-scrolling.html
compositing/geometry/clipped-video-controller.html
compositing/overflow/scroll-ancestor-update.html
compositing/overflow/overflow-compositing-descendant.html

http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=compositing%2Flayer-creation%2FspanOverlapsCanvas.html%2Ccompositing%2Fgeometry%2Fclipped-video-controller.html%2Ccompositing%2Fgeometry%2Fvideo-fixed-scrolling.html%2Ccompositing%2Fgeometry%2Fvideo-opacity-overlay.html%2Ccompositing%2Flayers-inside-overflow-scroll.html%2Ccompositing%2Foverflow%2Foverflow-compositing-descendant.html%2Ccompositing%2Foverflow%2Fscroll-ancestor-update.html%2Ccompositing%2Fself-painting-layers.html%2Ccompositing%2Fvideo-page-visibility.html

[Steve Block]

Committed r100598: <http://trac.webkit.org/changeset/100598>

[Shadi]

These tests are still failing:
compositing/geometry/video-opacity-overlay.html
compositing/geometry/video-fixed-scrolling.html
compositing/overflow/overflow-compositing-descendant.html
compositing/self-painting-layers.html
compositing/overflow/scroll-ancestor-update.html 
compositing/geometry/clipped-video-controller.html

Were the baselines wrong?

[James Robinson]

'598 just added expectations, not baselines. It looks like some of these (at least compositing/geometry/video-opacity-overlay.html) are in fact rendering correctly but need a rebaseline. They've been somewhat unstable lately because of recent configuration changes which changed the tests from using the software video path to using H/W colorspace conversion and scaling, which very slightly changes the video's display.

[Shadi]

As far as I can tell, they all seem to just need a rebaseline.

Steve/James, can you please verify that and submit new baselines? 

Thanks!

[Steve Block]

I filed the bug as WebKit gardener - leaving to James to confirm as I think he's the owner of these tests.

[James Robinson]

http://trac.webkit.org/changeset/100866