[Webkit-unassigned] [Bug 51262] WebPageProxy should delete its backing store after not painting for a while

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=51262





--- Comment #30 from Adam Roben (aroben) <aroben at apple.com>  2011-02-11 14:53:26 PST ---
(In reply to comment #29)
> We'll end up sharing quite a bit of code with the existing SetSize/DidSetSize messages.

Most of the SetSize logic is really for handling the case where the UI process commands the web process to display, rather than the web process deciding to display on its own. Luckily, that's exactly the point of the DisplayNow message, so a lot of code can be shared.

Similarly, most of the DidSetSize logic is really for handling the case where we're painting into a brand new backing store, but may have switched into accelerated compositing mode in the process. Luckily, that's exactly the point of the DidDisplayNow message, so a lot of code can be shared.

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