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<p>Thanks for making these revisions in response to feedback, Peter.
This is looking very good now.<br>
</p>
<div class="moz-cite-prefix">On 2021-02-22 15:34, Peter Constable
wrote:<br>
</div>
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<p class="MsoNormal"><span lang="EN-CA">At the last SC29/WG3
meeting, a few open issues regarding COLR v1 were discussed
with consensus to have these addressed in the working draft.
These included some details regarding radial gradients in
certain edge cases, interpolation of colours in gradients,
and handling of sRGB colours (linear vs. non-linear scales)
in blending. Since then, a few other issues were also
identified through review of the WD or in work on
implementations.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">With input from Google
partners, Chris Lilley, Vlad, Just van Rossum, and engineers
at Microsoft, I’ve made revisions in the
<a
href="https://github.com/googlefonts/colr-gradients-spec/blob/master/OFF_AMD2_WD.md"
moz-do-not-send="true">
proposed WD in the Google Fonts repo</a> for these various
issues:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph"
style="margin-left:0cm;mso-list:l0 level1 lfo1"><span
lang="EN-CA">Issue #39:
<a
href="https://github.com/MPEGGroup/OpenFontFormat/issues/39"
moz-do-not-send="true">Add support for sweep gradients
in COLR v1</a><o:p></o:p></span></li>
<li class="MsoListParagraph"
style="margin-left:0cm;mso-list:l0 level1 lfo1"><span
lang="EN-CA">Issue #40:
<a
href="https://github.com/MPEGGroup/OpenFontFormat/issues/40"
moz-do-not-send="true">In COLRv1 current design for
linear gradients doesn't work well with transforms</a><o:p></o:p></span></li>
<li class="MsoListParagraph"
style="margin-left:0cm;mso-list:l0 level1 lfo1"><span
lang="EN-CA">Issue #41:
<a
href="https://github.com/MPEGGroup/OpenFontFormat/issues/41"
moz-do-not-send="true">[AMD2 WD: COLR v1] Address "TBDs"
in working draft regarding open issues on radial
gradients</a><o:p></o:p></span></li>
<li class="MsoListParagraph"
style="margin-left:0cm;mso-list:l0 level1 lfo1"><span
lang="EN-CA">Issue #42:
<a
href="https://github.com/MPEGGroup/OpenFontFormat/issues/42"
moz-do-not-send="true">[AMD2 WD: COLR v1] Address "TBD"
in working draft regarding interpolation of colours</a><o:p></o:p></span></li>
<li class="MsoListParagraph"
style="margin-left:0cm;mso-list:l0 level1 lfo1"><span
lang="EN-CA">Issue #43:
<a
href="https://github.com/MPEGGroup/OpenFontFormat/issues/43"
moz-do-not-send="true">[AMD2 WD: COLR v1] Add paint
formats for more compact representations in non-variable
fonts</a><o:p></o:p></span></li>
<li class="MsoListParagraph"
style="margin-left:0cm;mso-list:l0 level1 lfo1"><span
lang="EN-CA">Issue #44:
<a
href="https://github.com/MPEGGroup/OpenFontFormat/issues/44"
moz-do-not-send="true">[AMD2 WD: COLR v1] Add discussion
of bounding box and transformation in variable fonts</a><o:p></o:p></span></li>
</ul>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Links to relevant pull
requests in the Google Fonts repo are provided in the
comments for each issue.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Along the way, there
were other smaller revisions made in the proposed WD.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Peter<o:p></o:p></span></p>
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<br>
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</blockquote>
<pre class="moz-signature" cols="72">--
Chris Lilley
@svgeesus
Technical Director @ W3C
W3C Strategy Team, Core Web Design
W3C Architecture & Technology Team, Core Web & Media</pre>
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