svg/transforms/text-with-pattern-with-svg-transform.svg failing on Chromium Linux

[Peter Kasting]

The Chromium Linux bot has been failing svg/transforms/text-with-pattern-with-svg-transform.svg for awhile; it may have started with http://trac.webkit.org/changeset/77485 (my records don't go back that far).

Please see test dashboard with image results at
  http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=svg%2Ftransforms%2Ftext-with-pattern-with-svg-transform.svg&showExpectations=true&group=%40ToT%20-%20chromium.org
; individual full-size images for the latest runs are at
  http://build.chromium.org/f/chromium/layout_test_results/Webkit_Linux/results/layout-test-results/svg/transforms/text-with-pattern-with-svg-transform-actual.png
and
  http://build.chromium.org/f/chromium/layout_test_results/Webkit_Linux__dbg__2_/results/layout-test-results/svg/transforms/text-with-pattern-with-svg-transform-actual.png
for release and debug, respectively.

There are two issues here.  The important one is that the small black text in the image is rendered incorrectly in release mode and correctly in debug mode.  The less important one is that in both images the rendering of the large text "on stroke" does not quite match the reference image.

The second issue may just be some innocuous difference between the baseline and the Linux output that requires us to generate a Chromium-Linux-specific baseline for this test.  The first issue, however, is definitely a bug.

I don't really know who can best deal with this so I tried to get a couple people who either know SVG text or font rendering in general.

[Nikolas Zimmermann]

Is the bug still valid?

[Tony Chang]

I think so.  Here's the mac baseline:
http://svn.webkit.org/repository/webkit/trunk/LayoutTests/platform/mac/svg/transforms/text-with-pattern-with-svg-transform-expected.png

Actual Chromium Linux result:
http://build.chromium.org/f/chromium/layout_test_results/Webkit_Linux/results/layout-test-results/svg/transforms/text-with-pattern-with-svg-transform-actual.png

Actual Chromium Linux debug result:
http://build.chromium.org/f/chromium/layout_test_results/Webkit_Linux__dbg_/results/layout-test-results/svg/transforms/text-with-pattern-with-svg-transform-actual.png

The difference from the Linux result and the Mac result are probably just font related, but it's weird that debug and release on Linux have different results.  Not sure if that's a font bug or an svg bug (probably a font bug in Chromium Linux).

[Stephen Chenney]

Marking test failures as WontFix. Bug is still accessible and recording in TestExpectations.