Bug 139282 - feConvolveMatrix does not work correctly when it is defined in the <defs> section and referenced by an svg element
Summary: feConvolveMatrix does not work correctly when it is defined in the <defs> sec...
Status: RESOLVED DUPLICATE of bug 139281
Alias: None
Product: WebKit
Classification: Unclassified
Component: SVG (show other bugs)
Version: 528+ (Nightly build)
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2014-12-04 19:17 PST by Said Abou-Hallawa
Modified: 2014-12-05 15:35 PST (History)
2 users (show)

See Also:

Attachments
Safari-Rendering (15.23 KB, image/png)
2014-12-04 19:17 PST, Said Abou-Hallawa 		no flags Details
FireFox-Rendering (45.84 KB, image/png)
2014-12-04 19:18 PST, Said Abou-Hallawa 		no flags Details
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Description Said Abou-Hallawa 2014-12-04 19:17:23 PST 
Open the following svg in WebKit:

<svg xmlns="http://www.w3.org/2000/svg"
     xmlns:xlink="http://www.w3.org/1999/xlink">
     
  <defs>
    <image id="MyImage" width="10" height="10" xlink:href="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAAXNSR0IArs4c6QAAADdJREFUGNNjZGD4/5+BCMDCwMDAwNDQiF9VQz0DEwORgPoKGRkY/v9fe+M5XkXBGpID7kZiFAIAEbULDl5w/68AAAAASUVORK5CYII="/>
    <filter id="noop" x="0%" y="0%" width="100%" height="100%">
      <feConvolveMatrix order="1" kernelMatrix="1"/>
    </filter>
  </defs>

  <g transform="translate(10, 10)">
    <use x="0" y="0" xlink:href="#MyImage" />
    <use x="20" y="0" xlink:href="#MyImage">
      <filter id="noop" x="0%" y="0%" width="100%" height="100%">
        <feConvolveMatrix order="1" kernelMatrix="1"/>
      </filter>
    </use>
    <g filter="url(#noop)">
      <use x="40" y="0" xlink:href="#MyImage" />
    </g>
  </g>
</svg>

Result: The last image looks different from the first two images.
Expected: The three images should look exactly the same. The first image is the row image. The second image has a convolution matrix filter with no-opertaion matrix so the image should not be affected by this filter. The third image has the same filter but it references it from the <defs> section. So It should look the same as the first two but it does not.
Comment 1 Said Abou-Hallawa 2014-12-04 19:17:43 PST 
Created attachment 242609 [details]
Safari-Rendering
Comment 2 Said Abou-Hallawa 2014-12-04 19:18:03 PST 
Created attachment 242610 [details]
FireFox-Rendering
Comment 3 Radar WebKit Bug Importer 2014-12-04 19:19:02 PST 
<rdar://problem/19152706>
Comment 4 Said Abou-Hallawa 2014-12-05 15:35:43 PST 

*** This bug has been marked as a duplicate of bug 139281 ***