<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;}
@font-face
{font-family:"DejaVu Sans Mono";
panose-1:0 0 0 0 0 0 0 0 0 0;}
/* 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.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;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
p.xxmsonormal, li.xxmsonormal, div.xxmsonormal
{mso-style-name:x_xmsonormal;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
p.xxxairmailon, li.xxxairmailon, div.xxxairmailon
{mso-style-name:x_xxairmailon;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
p.xxxmsonormal, li.xxxmsonormal, div.xxxmsonormal
{mso-style-name:x_xxmsonormal;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
p.xxxmsolistparagraph, li.xxxmsolistparagraph, div.xxxmsolistparagraph
{mso-style-name:x_xxmsolistparagraph;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle29
{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:458495973;
mso-list-template-ids:-450988194;}
@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;}
@list l1
{mso-list-id:813836933;
mso-list-template-ids:-723116200;}
@list l1: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 l1: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 l1: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 l1: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 l1: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 l1: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 l1: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 l1: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 l1: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;}
@list l2
{mso-list-id:1131095475;
mso-list-template-ids:297667264;}
@list l2: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 l2: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 l2: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 l2: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 l2: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 l2: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 l2: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 l2: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 l2: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;}
@list l3
{mso-list-id:1222592208;
mso-list-template-ids:-1467576624;}
@list l3: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 l3: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 l3: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 l3: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 l3: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 l3: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 l3: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 l3: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 l3: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;}
@list l4
{mso-list-id:2078241575;
mso-list-template-ids:-511913438;}
@list l4: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 l4: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 l4: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 l4: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 l4: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 l4: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 l4: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 l4: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 l4: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">Thanks for the update! <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">That link didn’t work for me, for some reason. But, regardless, yes, I have my work saved in a different branch, so please feel free to merge your changes as you see fit.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Cheers,<o:p></o:p></p>
<p class="MsoNormal">Michael<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> Thursday, January 21, 2021 2:57 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 Michael,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">I just wanted to point out that we merged another PR this week into our develop branch which among other things fixes the enum order in shaders:<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-devops/blender/pull/216">https://github.com/tangent-devops/blender/pull/216</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">This particular change fixed differences we saw in Shading Network exports for HdCycles so that renders in Blender match.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">Ben will be able to answer questions - I wonder if we shouldn't add this to the export branch as well - assuming that you have your work safely on a different branch.<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">Cheers,<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 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 Michael A Kowalski <<a href="mailto:makowalski@nvidia.com">makowalski@nvidia.com</a>><br>
<b>Sent:</b> Thursday, January 21, 2021 14:23<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="xmsonormal">Thank you so much, Mark! Indeed, your feedback and suggestions are very helpful!<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>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="xmsonormal"><b>From:</b> Bf-usd <<a href="mailto:bf-usd-bounces@blender.org">bf-usd-bounces@blender.org</a>>
<b>On Behalf Of </b>Mark Tucker<br>
<b>Sent:</b> Thursday, January 21, 2021 1:35 PM<br>
<b>To:</b> <a href="mailto:bf-usd@blender.org">bf-usd@blender.org</a><br>
<b>Subject:</b> Re: [Bf-usd] USD importer progress<o:p></o:p></p>
</div>
</div>
<p class="xmsonormal"> <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="xmsonormal"><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="xmsonormal"> <o:p></o:p></p>
<div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"DejaVu Sans Mono",serif;color:black">Hi Michael,
</span><o:p></o:p></p>
<div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"DejaVu Sans Mono",serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"DejaVu Sans Mono",serif;color:black">I can say from experience that providing options to choose primitives from a stage is a bottomless pit of possibilities. But the ones you mention (instance
proxies and filtering by purpose) are right at the top of the list. Other possibilities that were requested for Houdini are:
</span><o:p></o:p></p>
<div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"DejaVu Sans Mono",serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"DejaVu Sans Mono",serif;color:black">* Ignoring/including invisible primitives</span><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"DejaVu Sans Mono",serif;color:black">* Ignoring/including Abstract/Class primitives</span><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"DejaVu Sans Mono",serif;color:black">* Including only primitives that belong to a particular USD collection</span><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"DejaVu Sans Mono",serif;color:black">* Including only geometry prims that are inside a bounding box or camera frustum</span><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"DejaVu Sans Mono",serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"DejaVu Sans Mono",serif;color:black">Hope that helps,</span><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"DejaVu Sans Mono",serif;color:black">Mark</span><o:p></o:p></p>
</div>
</div>
<blockquote style="border:none;border-left:solid windowtext 1.0pt;padding:0in 0in 0in 8.0pt;margin-left:0in;margin-top:15.0pt;margin-bottom:5.0pt;min-width:500px">
<p style="margin-top:7.5pt"><span style="font-size:10.0pt;font-family:"DejaVu Sans Mono",serif;color:#AAAAAA">On 1/20/2021 4:47:54 PM, Michael A Kowalski <<a href="mailto:makowalski@nvidia.com">makowalski@nvidia.com</a>> wrote:</span><o:p></o:p></p>
<div>
<div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Hi Blazej and everyone,</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">I've been thinking through the features we ultimately want to support in the USD importer. I'd like to pose some of the questions here for discussion and welcome
feedback from everyone.</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">The first question is regarding options for traversing the USD stage for import.</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Tangent's importer (ta-usd-import branch on
<a href="https://github.com/tangent-opensource/blender">https://github.com/tangent-opensource/blender</a>) currently supports filtering the traversal based on primitive types (i.e., cameras, curves, lights, meshes and volumes), which is an excellent feature.
What do you think about adding the following options as well?</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<ul type="disc">
<li class="xmsolistparagraph" style="color:black;mso-list:l3 level1 lfo1"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">An option to import instance proxies. Enabling this would allow importing instanced USD prims as unique Blender objects.
(This would not implement actual instancing in Blender yet. I've started experimental work on implementing instancing, but this can be the topic of another discussion.)</span><o:p></o:p></li></ul>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<ul type="disc">
<li class="xmsolistparagraph" style="color:black;mso-list:l1 level1 lfo2"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Options to filter USD prims by "purpose", i.e., "proxy", "guide" or "render".</span><o:p></o:p></li></ul>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<ul type="disc">
<li class="xmsolistparagraph" style="color:black;mso-list:l4 level1 lfo3"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">An option to skip importing hierarchies consisting entirely of Blender empties. This can happen, for example, if the USD
has nested Xforms or Scopes that contain materials, since the importer traversal logic currently creates placeholder "empty" objects for such material definitions. An option to prune these "empty" hierarchies can help reduce clutter and conserve memory.</span><o:p></o:p></li></ul>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Please let me know what you think. Incidentally, the features I’ve listed are straightforward to add and I’ve implemented them in my local branch, so I could contribute
that part of the code.</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Thanks,</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Michael</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="xmsonormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> Bf-usd <<a href="mailto:bf-usd-bounces@blender.org">bf-usd-bounces@blender.org</a>>
<b>On Behalf Of </b>Michael A Kowalski<br>
<b>Sent:</b> Monday, November 23, 2020 5:41 PM<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>
</div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><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="xmsonormal"><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="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Hi Blazej and everyone,</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">I've been stepping through and testing your importer/exporter code. It's really great work! I'll probably finish studying the code over the next few days, and
I look forward to further discussions on how we can combine our efforts.</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">I also wanted to update the latest state of branch usd-importer-T81257. The following features were either already done or in progress when you announced your release
last week, and these were recently committed:</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<ul type="disc">
<li class="xmsolistparagraph" style="color:black;mso-list:l2 level1 lfo4"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Importing lights and cameras.
</span><o:p></o:p></li><li class="xmsolistparagraph" style="color:black;mso-list:l2 level1 lfo4"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Experimental support for importing USDPreviewSurface shaders as Principled BSDF node networks. (This is just a proof of
concept at this stage and needs more work to be production ready.)</span><o:p></o:p></li></ul>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">The first item above overlaps with your implementation, but I don't believe the second one does.</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Thanks!</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Michael</span><o:p></o:p></p>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="xmsonormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> Bf-usd <<a href="mailto:bf-usd-bounces@blender.org">bf-usd-bounces@blender.org</a>>
<b>On Behalf Of </b>Blazej Floch<br>
<b>Sent:</b> Tuesday, November 17, 2020 5:04 PM<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>
</div>
<p class="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><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="xmsonormal"><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="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<div>
<div>
<p class="xmsonormal" style="background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Good catch!</span><o:p></o:p></p>
</div>
<div>
<p class="xmsonormal" style="background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Thanks.</span><o:p></o:p></p>
</div>
<div class="MsoNormal" align="center" style="text-align:center"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">
<hr size="2" width="98%" align="center">
</span></div>
<div id="x_divRplyFwdMsg">
<p class="xmsonormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> Bf-usd <<a href="mailto:bf-usd-bounces@blender.org">bf-usd-bounces@blender.org</a>>
on behalf of Michael A Kowalski <<a href="mailto:makowalski@nvidia.com">makowalski@nvidia.com</a>><br>
<b>Sent:</b> Tuesday, November 17, 2020 15:42<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="xmsonormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Hi Blazej,</span><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Is this the link you meant to share?</span><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><a href="https://github.com/tangent-opensource/blender/wiki">https://github.com/tangent-opensource/blender/wiki</a></span><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">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.</span><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Thanks,</span><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Michael</span><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="xxmsonormal" style="margin:0in"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> Bf-usd <<a href="mailto:bf-usd-bounces@blender.org">bf-usd-bounces@blender.org</a>>
<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 <<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>
</div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><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="xxmsonormal" style="margin:0in"><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="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Hi everyone,</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">It took some time but we finally got our USD Import and Export branches public.</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;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):</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><a href="https://github.com/tangent-opensource/hdcycles/wiki"><span style="font-size:12.0pt">https://github.com/tangent-opensource/hdcycles/wiki</span></a></span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;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.</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">I hope we can coordinate how our work ties into:</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><a href="http://developer.blender.org/T81257"><span style="font-size:12.0pt">http://developer.blender.org/T81257</span></a></span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Take your time to go through the material.</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;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.</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;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.</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Looking forward to hear your feedback!</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Thanks,</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Blazej</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in;background:white"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div class="MsoNormal" align="center" style="text-align:center"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">
<hr size="2" width="98%" align="center">
</span></div>
<div id="x_x_divRplyFwdMsg">
<p class="xxmsonormal" style="margin:0in"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;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="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Hi Michael,</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Thank you for sharing your progress! I did a quick test (including instancing) and so far the importer works as expected.</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">I left a comment on </span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><a href="http://developer.blender.org/T81257"><span style="font-family:"Helvetica",sans-serif">developer.blender.org/T81257</span></a></span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black"> with
some pictures.</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">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
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><a href="http://blender.org"><span style="font-family:"Helvetica",sans-serif">blender.org</span></a></span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">.</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Everyone is welcome to share links here or directly with me.</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Regards,</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">
</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Francesco</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">
</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Courier New";color:black">--------------------------------------------------------------</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">
</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Courier New";color:black">Francesco Siddi - </span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><a href="mailto:francesco@blender.org" target="_blank"><span style="font-family:"Courier New"">francesco@blender.org</span></a></span><span style="font-size:10.0pt;font-family:"Courier New";color:black">
- </span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><a href="http://www.blender.org/" target="_blank"><span style="font-family:"Courier New"">www.blender.org</span></a></span><span style="font-size:10.0pt;font-family:"Courier New";color:black">
</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Courier New";color:black">COO at Blender and Producer at Blender Studio</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">
</span><o:p></o:p></p>
</div>
<div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Courier New";color:black">Buikslotermeerplein 161 - 1025 ET Amsterdam - The Netherlands</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">
</span><o:p></o:p></p>
</div>
</div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxxairmailon" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">On 9 November 2020 at 17:39:24, Michael A Kowalski (<a href="mailto:makowalski@nvidia.com">makowalski@nvidia.com</a>) wrote:</span><o:p></o:p></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt;min-width:500px">
<div>
<div>
<div>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Hello everyone,</span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">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:</span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><a href="https://developer.blender.org/T81257">https://developer.blender.org/T81257</a></span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">The corresponding
<a href="http://git.blender.org">git.blender.org</a> branch is usd-importer-T81257.
</span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">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.</span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Here are the main features implemented so far:</span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<ul type="disc">
<li class="xxxmsolistparagraph" style="color:black;mso-list:l0 level1 lfo5"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Basic support for importing USD meshes with UVs and normals.</span><o:p></o:p></li><li class="xxxmsolistparagraph" style="color:black;mso-list:l0 level1 lfo5"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">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.</span><o:p></o:p></li><li class="xxxmsolistparagraph" style="color:black;mso-list:l0 level1 lfo5"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">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.)</span><o:p></o:p></li></ul>
<p class="xxxmsolistparagraph" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">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.
</span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">No doubt, this code overlaps with the importer implemented by Tangent, as previously described by Blazej.</span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">I very much welcome everyone’s feedback and questions, and will continue to post status updates on this project in the coming weeks.</span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Thank you!</span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Michael</span><o:p></o:p></p>
<p class="xxxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
</div>
<p class="xxmsonormal" style="margin:0in"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">--
<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></span><o:p></o:p></p>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</div>
</div>
</body>
</html>