Bug 92811
| Summary: | [Chromium] compositing/video-page-visibility.html needs reworking to be deterministic | ||
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| Product: | WebKit | Reporter: | Peter Kasting <pkasting> |
| Component: | Layout and Rendering | Assignee: | Nobody <webkit-unassigned> |
| Status: | RESOLVED WONTFIX | ||
| Severity: | Normal | CC: | jamesr, schenney |
| Priority: | P2 | ||
| Version: | 528+ (Nightly build) | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
Peter Kasting
A description of compositing/video-page-visibility.html from jamesr:
"That test is (effectively) a repaint test. The way repaint tests work is, on each paint we basically draw a 50% opaque gray rectangle over the whole viewport, then paint the rect(s) that were invalidated since the last paint at 100% alpha. On this test, we do a bunch of paints with no damage, so you see the first paint at 1/2^N alpha, where N is the number of repaints.
"Unfortunately, on this test I don't think we care at all about N, and I think N isn't entirely stable. File a new bug to rework the test -- in its current form it isn't telling us anything except that we aren't hitting any ASSERTs (which is somewhat useful)."
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Stephen Chenney
https://code.google.com/p/chromium/issues/detail?id=231357