[Webkit-unassigned] [Bug 82963] New: REGRESSION (r101517): Animating the transform of a <rect> with shape-rendering: crispEdges leaves behind garbage

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=82963

           Summary: REGRESSION (r101517): Animating the transform of a
                    <rect> with shape-rendering: crispEdges leaves behind
                    garbage
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: Regression
          Severity: Normal
          Priority: P2
         Component: SVG
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: timothy_horton at apple.com
                CC: zimmermann at kde.org, simon.fraser at apple.com,
                    reni at webkit.org, webkit-bug-importer at group.apple.com


Created an attachment (id=135214)
 --> (https://bugs.webkit.org/attachment.cgi?id=135214&action=review)
repro

Like the title says, animating the transform of a <rect> with shape-rendering: crispEdges leaves behind garbage. Probably the repaint rect is rounded to be too small by 1px or something.

See the attached test case. I ran into this with a very simple d3.js toy I was writing over the weekend, so I'm pretty sure it can adversely affect real world content. Bisection says 101517 is probably the culprit (makes sense to me!).

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