Houdini 19.0 Import and export

Import and export GLTF

How to import and export GLTF files to and from Houdini.

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Nodes

Use the following nodes to import or export GLTF data:

GLTF Hierarchy Object node

Imports a .gltf or .glb file as a hierarchy of Object nodes.

GLTF SOP node

Imports geometry from a .gltf or .glb file into the SOP level.

ROP GLTF SOP node

Exports geometry at the SOP-level to a .gltf or .glb file.

ROP GLTF Character Output SOP node

Exports a rigged character at the SOP-level to a gltf or .glb file.

GLTF ROP node

Exports a scene, an Object, or a SOP to a .gltf or .glb file.

Controlling alpha blending

To specify the blend mode for the alpha channel in an exported material, you must add extra render properties to the material.

  1. Select the Principled Shader VOP node in your material.

  2. In the parameter editor, open the Gear menu and choose Edit Rendering Parameters.

  3. In the Render Properties tree, find the Material Options folder, and inside that, the glTF folder.

  4. Drag the glTF AlphaMode and glTF AlphaCutoff properties from the glTF folder into the node’s Existing Parameters tree.

  5. Click Apply.

You can then use the new parameters to control how alpha blending will work when you export the material to GLTF.

Import and export