[Webkit-unassigned] [Bug 121269] New: Consider reinstating the ImageQualityController optimization to prevent an extra high quality paint when we don't need to

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=121269

           Summary: Consider reinstating the ImageQualityController
                    optimization to prevent an extra high quality paint
                    when we don't need to
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Images
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: thorton at apple.com


The optimization removed in https://bugs.webkit.org/show_bug.cgi?id=121244 was flawed, but it could be done if the repaint rect for any renderer that calls into shouldPaintAtLowQuality includes the entirety of the renderer.

This is not an easy situation to get into; see my comments in that bug. I'm not totally sure it's worth it.

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