Apple Silicon Support

[creijon]

Description of Change(s)

Builds on the work in #1898 which adds PySide6 support.

Enables native Apple Silicon support for Hydra-Storm. This includes applications which usd PySide bindings such as usdview as well as applications that link in USD directly.

To build usdview on Apple Silicon it is necessary to install PySide6, the changes for this have now been isolated to #1898

Embree upgraded to 3.13.2 to support Apple Silicon

Thanks to the rest of the team at Apple for this work.

Tested On:
Built with the following options: --ptex --openvdb --openimageio --opencolorio --alembic --draco --hdf5 --embree --tests

• macOS Catalina, Big Sur and Monterey on Intel architecture. With and without PySide2 installed.
• macOS Big Sur and Monterey on M1 and M1Pro architectures. With and without PySide2 installed next to PySide6.
• Ubuntu 21.04 with and without PySide2 installed next to PySide6.

Known Limitations:

• No support for cross compilation between Intel and Apple Silicon.
• No support for universal binaries.

Fixes Issue(s)

• Native Apple Silicon support

• I have submitted a signed Contributor License Agreement

[jilliene]

Filed as internal issue #USD-7381