<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:Helvetica;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
p.xairmailon, li.xairmailon, div.xairmailon
{mso-style-name:x_airmail_on;
margin:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
p.xmsonormal, li.xmsonormal, div.xmsonormal
{mso-style-name:x_msonormal;
margin:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
p.xmsolistparagraph, li.xmsolistparagraph, div.xmsolistparagraph
{mso-style-name:x_msolistparagraph;
margin:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle23
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:489559690;
mso-list-template-ids:-1241470150;}
@list l0:level1
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level2
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:1.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level3
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:1.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level4
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:2.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level5
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:2.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level6
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:3.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level7
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:3.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level8
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:4.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level9
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:4.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal">Hi Blazej,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is this the link you meant to share?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><a href="https://github.com/tangent-opensource/blender/wiki">https://github.com/tangent-opensource/blender/wiki</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This is very exciting! Thanks very much for the updated and for sharing these branches! We’re very much looking forward to studying and testing your implementation.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Michael<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> Bf-usd <bf-usd-bounces@blender.org> <b>On Behalf Of
</b>Blazej Floch<br>
<b>Sent:</b> Tuesday, November 17, 2020 2:20 PM<br>
<b>To:</b> Blender USD Workgroup <bf-usd@blender.org><br>
<b>Subject:</b> Re: [Bf-usd] USD importer progress<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<table class="MsoNormalTable" border="1" cellpadding="0" style="background:#FFEB9C">
<tbody>
<tr>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal"><b><span style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:black">External email: Use caution opening links or attachments</span></b><span style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:black">
</span><o:p></o:p></p>
</td>
</tr>
</tbody>
</table>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Hi everyone,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">It took some time but we finally got our USD Import and Export branches public.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Detailed information can be found here (please the "Info" links for more details, we've updated the text based on our current state):<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><a href="https://github.com/tangent-opensource/hdcycles/wiki">https://github.com/tangent-opensource/hdcycles/wiki</a><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">We are sorry this took longer than anticipated to get through the process. It means that meanwhile we have some duplication on the import part.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">I hope we can coordinate how our work ties into:<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><a href="http://developer.blender.org/T81257">http://developer.blender.org/T81257</a><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Take your time to go through the material.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">I think the important part will be understanding how we want to treat the upstream development on the importer. Are there features that we see useful from either implementations,
and which base do we feel confident to use for future work so we can eliminate the duplication of work moving forward.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">For the exporter we will probably push the additions for review to the bf next. So far, our code is based on 2.83, which is our stable production build for the upcoming
project requiring this work.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Looking forward to hear your feedback!<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Thanks,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Blazej<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
</div>
<div class="MsoNormal" align="center" style="text-align:center">
<hr size="2" width="98%" align="center">
</div>
<div id="divRplyFwdMsg">
<p class="MsoNormal"><b><span style="color:black">From:</span></b><span style="color:black"> Bf-usd <<a href="mailto:bf-usd-bounces@blender.org">bf-usd-bounces@blender.org</a>> on behalf of Francesco Siddi <<a href="mailto:francesco@blender.org">francesco@blender.org</a>><br>
<b>Sent:</b> Monday, November 9, 2020 14:49<br>
<b>To:</b> Blender USD Workgroup <<a href="mailto:bf-usd@blender.org">bf-usd@blender.org</a>><br>
<b>Subject:</b> Re: [Bf-usd] USD importer progress</span> <o:p></o:p></p>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Hi Michael,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Thank you for sharing your progress! I did a quick test (including instancing) and so far the importer works as expected.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">I left a comment on <a href="http://developer.blender.org/T81257">developer.blender.org/T81257</a> with some pictures.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Besides the usual “Attic", “Kitchen" and other simple demo scenes it would be very useful to have some production samples to test the current implementation. Suggestions
and contributions are welcome! I’m particularly interested in content distributed with a permissive (CC-BY or similar) license so that the files can be shared on
<a href="http://blender.org">blender.org</a>.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Everyone is welcome to share links here or directly with me.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<div>
<p class="MsoNormal"><span style="font-family:"Helvetica",sans-serif">Regards,</span>
<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Helvetica",sans-serif">Francesco</span>
<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">--------------------------------------------------------------</span>
<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">Francesco Siddi - <a href="mailto:francesco@blender.org" target="_blank">francesco@blender.org</a> - <a href="http://www.blender.org/" target="_blank">www.blender.org</a>
</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">COO at Blender and Producer at Blender Studio</span>
<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">Buikslotermeerplein 161 - 1025 ET Amsterdam - The Netherlands</span>
<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="xairmailon">On 9 November 2020 at 17:39:24, Michael A Kowalski (<a href="mailto:makowalski@nvidia.com">makowalski@nvidia.com</a>) wrote:<o:p></o:p></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<div>
<p class="xmsonormal">Hello everyone,<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal">To follow up on Francesco’s email from last week, I’d like to briefly report the status of the work on the USD importer. The task description can be found here:<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal"><a href="https://developer.blender.org/T81257">https://developer.blender.org/T81257</a><o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal">The corresponding <a href="http://git.blender.org">git.blender.org</a> branch is usd-importer-T81257.
<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal">This is very much a work in progress. As per the task description, the initial implementation is loosely based on the design of the Alembic importer. In fact, in many places the USD importer code follows the corresponding Alembic implementation
very closely. The basic strategy is to iterate over the USD stage to instantiate “reader” classes that translate USD primitives to Blender objects.<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal">Here are the main features implemented so far:<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="xmsolistparagraph" style="mso-list:l0 level1 lfo1">Basic support for importing USD meshes with UVs and normals.<o:p></o:p></li><li class="xmsolistparagraph" style="mso-list:l0 level1 lfo1">Work in progress on material import: creation of material slots and assignment of material indices. Existing Blender material matching the names of USD materials will be automatically assigned
to the corresponding slots.<o:p></o:p></li><li class="xmsolistparagraph" style="mso-list:l0 level1 lfo1">Experimental support for instancing: instanceable USD mesh primitives can be imported as shared meshes in Blender. (However, the importer doesn’t yet handle converting USD point instancer primitives.)<o:p></o:p></li></ul>
<p class="xmsolistparagraph"> <o:p></o:p></p>
<p class="xmsonormal">I consider this work to be a prototype which can be used to motivate discussion of the design. I’m quite open to redesigning and refactoring the code as needed based on feedback and testing, of course. Needless to say, many features
are missing and there are opportunities for optimization. <o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal">No doubt, this code overlaps with the importer implemented by Tangent, as previously described by Blazej.<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal">I very much welcome everyone’s feedback and questions, and will continue to post status updates on this project in the coming weeks.<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal">Thank you!<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
<p class="xmsonormal">Michael<o:p></o:p></p>
<p class="xmsonormal"> <o:p></o:p></p>
</div>
<p class="MsoNormal">-- <br>
Bf-usd mailing list<br>
<a href="mailto:Bf-usd@blender.org">Bf-usd@blender.org</a><br>
<a href="https://lists.blender.org/mailman/listinfo/bf-usd">https://lists.blender.org/mailman/listinfo/bf-usd</a><o:p></o:p></p>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</body>
</html>