We use the latest versions of OpenUSD and usdPython as of 2024/03/01.
Introduction
- Apple's usdPython python version is stuck at 3.7.9, so build and use USD with the latest python version available for OpenUSD.
Available Python versions can be found here.
The version as of 2024/03/01 was 3.9.13.
Step 1 Preparation before build
- Since we are using 3.7.9 python, install the latest version with pyenv
- The latest was 3.12.2
pyenv install 3.12.2
pyenv local 3.12.2
In python, we also want to be able to run python3, so run the following
alias python="python3"
- In USD, the
usdViewcommand usespyside6, so install it. - You can also use
pyside2.
python -m pip install pyside6
Step 2 Build
- Peel off unnecessary things with option (be patient as it takes time to build)
python USD/build_scripts/build_usd.py /path/to/my_usd_install_dir --no-examples --no-tests --no-docs --no-ptex --no-openvdb --no-draco --no --materialx --no-examples
Dealing with build errors
- Install
pyOpenGLto deal with the error.
PyOpenGL is not installed; if pip is installed, run "pip install PyOpenGL" to install it, then re-run this script.
If PyOpenGL is already installed, you may need to update your PYTHONPATH to indicate where PyOpenGL is located.
pip install PyOpenGL
Step 3 Replace
- The U.S. dollar/ distribution is replaced. After replacing, see here.
Step 4 Run usdzconvert
usdzconvert . /cube.glb ~/cube.usdz
I get an error.
Input file: /Users/xxxxxx/Documents/cube.glb
Traceback (most recent call last):
File "/Users/xxxxxx/projects/USDPython/./usdzconvert/usdzconvert", line 860, in <module>
errorValue = main()
File "/Users/xxxxxx/projects/USDPython/./usdzconvert/usdzconvert", line 855, in main
return tryProcess(sys.argv[1:])
File "/Users/xxxxxx/projects/USDPython/./usdzconvert/usdzconvert", line 810, in tryProcess
ret = process(argumentList)
File "/Users/xxxxxx/projects/USDPython/./usdzconvert/usdzconvert", line 650, in process
usdStage = usdStageWithGlTF_module.usdStageWithGlTF(srcPath, tmpPath, legacyModifier, openParameters)
File "/Users/xxxxxx/projects/USDPython/usdzconvert/usdStageWithGlTF.py", line 1529, in usdStageWithGlTF
return converter.makeUsdStage()
File "/Users/xxxxxx/projects/USDPython/usdzconvert/usdStageWithGlTF.py", line 1512, in makeUsdStage
self.processNodeChildren(self.gltf['scenes'][0]['nodes'], self.asset.getGeomPath(), None)
File "/Users/xxxxxx/projects/USDPython/usdzconvert/usdStageWithGlTF.py", line 1399, in processNodeChildren
self.processNode(nodeIdx, path, underSkeleton, indent)
File "/Users/xxxxxx/projects/USDPython/usdzconvert/usdStageWithGlTF.py", line 1366, in processNode
usdGeom = self.processMesh(nodeIdx, newPath, underSkeleton)
File "/Users/xxxxxx/projects/USDPython/usdzconvert/usdStageWithGlTF.py", line 1316, in processMesh
usdGeom = self.processPrimitive(nodeIdx, gltfPrimitives[0], path, skinIdx, underSkeleton)
File "/Users/xxxxxx/projects/USDPython/usdzconvert/usdStageWithGlTF.py", line 1142, in processPrimitive
normalPrimvar = usdGeom.CreatePrimvar('normals', Sdf.ValueTypeNames.Normal3fArray, UsdGeom.Tokens.vertex)
AttributeError: 'Mesh' object has no attribute 'CreatePrimvar'
Check the issue and fix usdzconvert/usdStageWithGlTF.py.
https://github.com/PixarAnimationStudios/OpenUSD/issues/2628
https://github.com/activeguild/USDPython/commit/482afe50eba109c7d68b082edef003af4ec2e279
Confirmation that usdzconverter terminates normally with the above modification.
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