[Webkit-unassigned] [Bug 37389] New: Poor Quality box-shadow rendering, inconsistent with Firefox

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Sat Apr 10 11:02:56 PDT 2010


           Summary: Poor Quality box-shadow rendering, inconsistent with
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
               URL: http://bugs.matthewrconsultancy.co.uk/webkit/demo2/
        OS/Version: Windows 7
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: msu.webkit.bugzilla at matthewrconsultancy.co.uk

It appears the blur mechanism for the box-shadow in webkit (tested in Google
Chrome and Safari) produces particularly poor results. As a designer it gets my
attention quickly. Detail really is important and inconsistent rendering across
platforms is really bad. I've done screen grabs comparing to Gecko/Firefox and
a reference rendering using Gaussian blur. Firefox produces fairly good

It may also be poor for text-shadow but right now I don't have time to document
it. I suspect they both use the same blurring algorithm.

I've attached the screen grab in addition to providing a URL demonstrating the
problem and showing a live example as well as the screen grab. This is just for

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