Houdini 18.0 Nodes TOP nodes

USD Import Files TOP node

Creates work items from file references found in a USD stage.

Reads a USD file, and creates work items from referenced USD layer files and /or other files, such as images that are referenced as asset paths. The search can be done on the flattened stage, the individual root layer, or recursively on the root layer and all sub layers. The paths of the found files are attached as a file output.


Work Item Generation

Whether this node generates static or dynamic work items. You should generally leave this set to "Automatic" unless you know the node’s work items can be computed statically, or that they need to be generated dynamically.


This node always creates dynamic work items: it waits until the upstream work items are known, and generates new work items from the upstream work items.


This node always creates static work items: it creates the number of work items it thinks it needs based on the parameters (and any upstream static items) before the network runs.


If the input is static (a static processor, or a partitioner with only static inputs, or a mapper), this node generates static work items, otherwise it generates dynamic work items.

USD File

Upstream File: Read from file data on the upstream work item.

Custom File Path: Read from the given file path.

With File Tag

Tag of upstream file data when USD File is set to Upstream File.


Full path to the USD file to be read when USD File is set to Custom File Path.

Resolution Mode

Flattened Stage: The stage is flattened before searching.

Recursive Layer: The stage layers are recursively searched without being flattened.

Single Layer: The layer of the given USD file is searched without following considering sub layers.

File Types

USD Files: Search for referenced USD files.

Non-USD Files: Search for non-usd files, also ignores any files in HOUDINI_TEMP_DIR.

All Files: All files are returned.


Evaluate asset path attributes at the given time instead of the default of 0.

Output File Tag

Apply this tag to output file data instead of automatically detecting a tag.

See also

TOP nodes