[Webkit-unassigned] [Bug 110065] New: [Skia] ImageBuffer::copyImage(...) is broken for scaled ImageBuffers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=110065

           Summary: [Skia] ImageBuffer::copyImage(...) is broken for
                    scaled ImageBuffers
           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: pdr at google.com
                CC: reed at google.com, schenney at chromium.org,
                    fmalita at chromium.org


ImageBuffer::copyImage has the following signature:
PassRefPtr<Image> copyImage(BackingStoreCopy = CopyBackingStore, ScaleBehavior = Scaled) const;

Unfortunately, ImageBufferSkia does not support ScaleBehavior = Scaled:
http://trac.webkit.org/browser/trunk/Source/WebCore/platform/graphics/skia/ImageBufferSkia.cpp#L198

Therefore, image buffers with resolution scale will not work with copyImage by default on Skia-backed platforms.

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