[Webkit-unassigned] [Bug 82575] New: shadowBlur not applied correctly to partially drawn images

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=82575

           Summary: shadowBlur not applied correctly to partially drawn
                    images
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
        OS/Version: Mac OS X 10.7
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Canvas
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: doug at dougmcinnes.com


Created an attachment (id=134510)
 --> (https://bugs.webkit.org/attachment.cgi?id=134510&action=review)
sample code

When drawing part of an image with a shadow blur the blur is cut off with the bounds of the image -- it appears the blur is applied before the sample is taken. Images rendered in full have the full shadows as expected.

The attached sample car shows the same PNG rendered with the same shadowBlur as a partial render and a full render to compare.

This happens in the current versions of Chrome, Safari and the latest Webkit build on OS X.

I found a somewhat related Chrominum issue but this one only happens on Windows:
http://code.google.com/p/chromium/issues/detail?id=100703

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