[Bug 25411] Confusion over the specularExponent attribute

https://www.w3.org/Bugs/Public/show_bug.cgi?id=25411

--- Comment #7 from Paul LeBeau <paul.lebeau@gmail.com> ---
I've added a couple of test files.

The one labelled "Test combinations of specular exponent" has four squares lit
by the four different combinations of the two vales of specularExponent.

My recollection was that there were significant different between the three
browsers Chrome, FF and IE when I originally reported this bug.  Now the
renderings still vary but are quite close.  Perhaps bugs have been fixed.

With the second file "Specular lighting of a raised ring shape ", Chrome is
significantly different from the other two.  FF and IE11 are similar, but not
exactly the same.

My experience is that almost any test file involving the lighting primitives
will show up significant differences between the browsers.  Perhaps the
descriptions of these primitives need expansion or clarification to remove
these differences.  Or perhaps there needs to be more tests for these.  IIRC
there are only about half a dozen lighting tests in the test suite.

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Received on Friday, 7 November 2014 14:52:16 UTC