[Webkit-unassigned] [Bug 70634] Mark GraphicsLayers as opaque when possible

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=70634





--- Comment #28 from Dana Jansens <danakj at chromium.org>  2011-10-27 17:04:42 PST ---
(In reply to comment #27)
> (In reply to comment #25)
> > Regarding testing:
> > 
> > I think the right way to test this is to add contentsOpaque to the output of GraphicsLayer::dumpProperties().  However this change alone which break and require rebaselining a *lot* of layout tests.
> 
> No, not if you only print it out when it has the non-default value.
...
> 
> No need for any of this. Just print out contentsOpaque when it's true.

The default value is non-opaque, since we want to assume things blend if we're not sure. But I imagine most tests actually actually use opaque layers, and the root layer should always be opaque. How come this won't make all these tests fail?

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