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USD - Arnold for 3ds Max

Further Reading
See USD in the Arnold User Guide

A procedural node that reads USD files.

Exporting USD

To export the scene/selection as a .usd file enable .ass/.usd File in Render Setup: Arnold -> Archive.

Importing USD

Path

The path to the USD file.

Object Path

Determines which USD primitive(s) are rendered. When empty (default), it will render the whole USD file.

Clear Controller

By default, the frame parameter is linked against the animation timeline frame. This button unlocks that link.

Namespace

This custom namespace can be used instead of the procedural name, to reference contents through absolute or relative paths.

Up Axis

The Up Axis for the procedural. Z is the default.

Select Operator

Gives the ability to connect Procedural/Alembic nodes in the Operator Graph Editor.

Choose which procedural to use

Viewport

Procedural/Alembic files can be introspected to retrieve geometry and display it in the viewport.

Display Mode

The available viewport display modes are:

  • Bounding Box (Fast): Displays the contents as a bounding box. It does not need the full ass file load, it simply looks for "bounds" being present. If it is not, it keeps the previous behavior.
  • Bounding Box (Content List): Displays the contents as a bounding box and in the content list.
  • Points: Displays the contents as points.
  • Wireframe: Displays the contents as a wireframe.
  • Shape: Displays as a shape with full shading.

Bounding Box Threshold (ratio of screen size)

Defines how much to extend the bounding box of the object. The default value is 0.02.

Animation Cache Size (in frames)

Animation frames load on demand and are kept in a cache of the size defined in the UI. If the cache is not used, the data is always trashed (same as the cache size is 1).

Content

Shows the contents of the file. The content tree view selection cannot be used for selection. Double-clicking copies the sub-node name (path) and can be pasted in an operator.

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