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maya-glTF

glTF exporter plugin for Autodesk Maya

This plugin is compatible with most modern versions of Maya. Tested with Maya 2015+. Most of the glTF spec has been implemented, but this is still a work in progress. For best material results use StingrayPBS shader. Report any issues here!

Water Bottle Export

Installation

  1. Download the ZIP file using the green button at the top of this page.
  2. Extract the ZIP and copy the files to their appropriate folders:
  • glTFExport.py and glTFTranslatorOpts.mel from the scripts folder need to be copied to the scripts folder here:
OS Path
(Windows) C:/Users/<username>/Documents/maya/<version>/scripts
(Mac OS X) Library/Preferences/Autodesk/maya/<version>/scripts
(Linux) $MAYA_APP_DIR/maya/<version>/scripts
  • glTFTranslator.py from the plug-ins folder needs to be copied to the plug-ins folder here (create a plug-ins folder if you don't have one):
OS Path
(Windows) C:/Users/<username>/Documents/maya/<version>/plug-ins
(Mac OS X) Library/Preferences/Autodesk/maya/<version>/plug-ins
(Linux) $MAYA_APP_DIR/maya/<version>/plug-ins

Usage

Exporting through the File menu

  1. Launch Maya.
  2. Open the Plug-in Manager
    • Plug-in Manager 1
  3. Check on "Loaded" for "glTFTranslator.py" plug-in.
    • Plug-in Manager 2
  4. Export your scene: File->Export All...
    • File->Export Selection... not currently supported.
  5. Choose "glTF Export" for the "Files of Type" option.
  6. Optionally, set any file type specific options as well.
    • File options

Exporting as a part of a script

import glTFExport   
glTFExport.export(r"C:\Temp\test.glb", resource_format='bin', anim='keyed', vflip=True)

Export parameters

Parameter Description
file_path Path to export the file to. File extension should be .glb or .gltf
resource_format How to export binary data. Only applies to .gltf format. Valid value: 'bin', 'source', 'embedded'. bin - A single .bin file next to the .gltf file. source - Images are copied next to the .gltf file. embedded - Everything is embedded within the .gltf.
anim How to deal with animation. Valid values: 'none', 'keyed'. none - Don't export animation. keyed - Respect current keys
vFlip GL renderers want UVs flippedin V compared to Maya. Set to False if you don't need to fix the flipping.

Current Features

  • Export whole scene from Maya
  • Exports transform nodes and meshes with hierarchy
  • Exports single material shader per mesh currently.
    • Picks the first shader.
  • Lambert, Blinn, Phong use a PBR conversion approximation
    • Base color comes from color attribute as texture or value.
    • Metallic and roughness are derived from the other attribute values and do not support textures.
  • Recommend StingrayPBS shader for best material conversion.
  • Node animation supported for translation, rotation, scale.
  • glTF and glb supported
  • Options for embedded binary data, single external bin, or preserved external images.

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