REGRESSION(r26359-26570): Points in SVG kNN correlation model do not appear in ToT

• Component: SVG
• Status: RESOLVED FIXED

[Matt Lilek]

The points in the model at http://www.cip.ifi.lmu.de/~schubert/kovar/ do not appear in ToT (r28986).  The site works fine in Safari 3.0.4.

[Eric Seidel (no email)]

This seems to be the reduction:

<svg xmlns="http://www.w3.org/2000/svg">
  <circle transform="scale(1000)" r="0.1" opacity=".99"/>
</svg>

(thanks Sam!)

[Eric Seidel (no email)]

Created attachment 18120 [details]
reduction

[Eric Seidel (no email)]

Created attachment 18121 [details]
drt-compatible test case

[Eric Seidel (no email)]

bisect-builds says:

Works: r26359  Fails: r26570

[Eric Seidel (no email)]

My suspicion is that some calculation changed to use ints instead of floats which should not have.

[Gavin Sherlock]

Is the result of the test supposed to be a green square?  If so, this looks like it works correctly, both in Safari 4.03, and the latest nightly (r48518).  The original bug url also seems to work, in that the points in the model do appear.  I'm not able to determine when this progressed, as the oldest nightly build that I can test on 10.6 seems to work.  Would be nice if there were a test case added (if there isn't already), but I think this can be closed.

[Rob Buis]

Created attachment 93591 [details]
Patch

[Rob Buis]

(In reply to comment #7)
> Created an attachment (id=93591) [details]
> Patch

See the ChangeLog, the bug is fixed but I think it may be a good idea to keep Eric's reduction test around.
Cheers,

Rob.

[Eric Seidel (no email)]

Comment on attachment 93591 [details]
Patch

OK.

[Rob Buis]

Committed r86514: <http://trac.webkit.org/changeset/86514>

[Alexey Proskuryakov]

Is the expected result really platform specific? It's just a green square.

[Ademar Reis]

FYI, this problem affects QtWebKit with current trunk. Not sure if it has the same root cause, but the "symptoms" are the same. Opened bug 60968 to track it.