Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/opensubdiv-source/documentation/mtlptexviewer.rst

@@ -0,0 +1,44 @@
+..  
+     Copyright 2019 Pixar
+  
+     Licensed under the terms set forth in the LICENSE.txt file available at
+     https://opensubdiv.org/license.
+  
+
+mtlPtexViewer
+-------------
+
+.. contents::
+   :local:
+   :backlinks: none
+
+SYNOPSIS
+========
+
+.. parsed-literal::
+   :class: codefhead
+
+   **open** **mtlPtexViewer.app** **--args** [**-yup**] [**-u**] [**-a**] [**-l** *isolation level*]
+       *ptex color file*
+       *ptex displacement file*
+
+DESCRIPTION
+===========
+
+``mtlPtexViewer`` is a stand-alone application demonstrating shading with color and displacement ptex maps. Multiple controls are available to experiment with the algorithms.
+
+.. image:: images/mtlptexviewer.png
+   :width: 400px
+   :align: center
+   :target: images/mtlptexviewer.png
+
+KEYBOARD CONTROLS
+=================
+
+   .. code:: c++
+
+      q      : quit
+      f      : fit frame
+      +/-    : increase / decrease tessellation rate
+
+.. include:: examples_see_also.rst