[Webkit-unassigned] [Bug 119259] New: Scaling via "-webkit-transform: scale(); " is fuzzy (as if a bitmap) when "-webkit-backface-visibility: hidden" is added

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=119259

           Summary: Scaling via "-webkit-transform: scale();" is fuzzy (as
                    if a bitmap) when "-webkit-backface-visibility:
                    hidden" is added
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
               URL: http://jsfiddle.net/ar_fiddles/aLVf8/
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Major
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: webkitbugs at rmnet.com


Created an attachment (id=207735)
 --> (https://bugs.webkit.org/attachment.cgi?id=207735&action=review)
Testcase: Reference Screenshot

Adding "-webkit-backface-visibility: hidden;" to a vector element (ex: Type) with "-webkit-transform: scale();" causes the scaled element to *not* be rendered at high quality. In other words, it's fuzzy. It's scaled up as if it were a bitmap image instead of a vector shape.

Test Case:
http://jsfiddle.net/ar_fiddles/aLVf8/

Browsers Tested + Results:

Safari: All Fuzzy (bug)
- 5.1.9 (6534.59.8)
- 6.0
- iOS 6

Chrome (Mac/Win):
28.0.1500.71: Sharp (no bug)
28.0.1500.12 (iOS): Fuzzy (bug)
(Not sure if this is related to it being the mobile version, or if a fix was introduced somewhere between xxxx.12 and xxxx.71)

Firefox (Mac)
- 22.0: Sharp (no bug)


Related:
"No anti aliasing on scaled elements when backface-visibility:hidden is set"
https://code.google.com/p/chromium/issues/detail?id=144884

Possibly Related:
"backface-visibility:hidden does not make RenderLayers, and should"
https://bugs.webkit.org/show_bug.cgi?id=24435

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