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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Thank you Peter for your hard work on this!<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>All, please review the issues raised on the <a href="https://github.com/MPEGGroup/OpenFontFormat">MPEGGroup Github</a> and provide your comments on the proposed changes. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>For avoidance of any confusion, there are two different documents that are both referred to using “WD” as a shorthand – one is the Working Draft output document from the last MPEG Systems (SC29/WG3) meeting, and another one is a working draft of the proposal (maintained in the Google Fonts repo) where the revisions were made to address open issues discussed at the last meeting, and new comments and issues raised as part of the public discussion.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>These proposed changes, along with the comments that will have been submitted before the next WG meeting in late April, will be used as the basis for preparation of the input contributions to the next WG meeting. Our goal, reflected in the AHG mandate, is to finalize the draft standard to make it ready for promotion to the Committee Draft stage.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Thank you,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Vladimir<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><a name="_MailEndCompose"><span style='color:#1F497D'><o:p> </o:p></span></a></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> mpeg-otspec [mailto:mpeg-otspec-bounces@lists.aau.at] <b>On Behalf Of </b>Peter Constable<br><b>Sent:</b> Monday, February 22, 2021 3:35 PM<br><b>To:</b> MPEG OT Spec list (mpeg-otspec@lists.aau.at) <mpeg-otspec@lists.aau.at><br><b>Subject:</b> [MPEG-OTSPEC] COLR v1 updates for AMD 2<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><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">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:0in' type=disc><li class=MsoNormal style='mso-list:l0 level1 lfo3'><span lang=EN-CA>Issue #39: <a href="https://github.com/MPEGGroup/OpenFontFormat/issues/39">Add support for sweep gradients in COLR v1</a><o:p></o:p></span></li><li class=MsoNormal style='mso-list:l0 level1 lfo3'><span lang=EN-CA>Issue #40: <a href="https://github.com/MPEGGroup/OpenFontFormat/issues/40">In COLRv1 current design for linear gradients doesn't work well with transforms</a><o:p></o:p></span></li><li class=MsoNormal style='mso-list:l0 level1 lfo3'><span lang=EN-CA>Issue #41: <a href="https://github.com/MPEGGroup/OpenFontFormat/issues/41">[AMD2 WD: COLR v1] Address "TBDs" in working draft regarding open issues on radial gradients</a><o:p></o:p></span></li><li class=MsoNormal style='mso-list:l0 level1 lfo3'><span lang=EN-CA>Issue #42: <a href="https://github.com/MPEGGroup/OpenFontFormat/issues/42">[AMD2 WD: COLR v1] Address "TBD" in working draft regarding interpolation of colours</a><o:p></o:p></span></li><li class=MsoNormal style='mso-list:l0 level1 lfo3'><span lang=EN-CA>Issue #43: <a href="https://github.com/MPEGGroup/OpenFontFormat/issues/43">[AMD2 WD: COLR v1] Add paint formats for more compact representations in non-variable fonts</a><o:p></o:p></span></li><li class=MsoNormal style='mso-list:l0 level1 lfo3'><span lang=EN-CA>Issue #44: <a href="https://github.com/MPEGGroup/OpenFontFormat/issues/44">[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></div></body></html>