Meshes with Standard Surface (MaterialX) Transparent Material Not Rendered by Storm in Intel-Based Mac

[aloysius-aryaputera]

Description of Issue

Using an Intel-based Mac, whenever we assign a standard surface (MaterialX) material with transparency, e.g.: opacity less than 1, to a mesh, the mesh is not rendered on Storm.

Steps to Reproduce

1. Download opacity.usda.zip & open it in usdview using an Intel-based Mac.
2. Notice that the capsule is not rendered. See the screenshot below.
3. The rendering looks normal if we are using, for example, M1 Mac. See the screenshot below.
4. There is no error message in the terminal upon opening the stage using usdview.

System Information (OS, Hardware)

MacBook Pro (15-inch, 2016)

Processor: 2.9 GHz Quad-Core Intel Core i7

Graphics:

• Radeon Pro 460 4GB
• Intel HD Graphics 530 1536 MB

OS: macOS Monterey (Version 12.7.2)

Package Versions

24.03

Build Flags

Debug

[jesschimein]

Filed as internal issue #USD-9516