[EMSUSD-1482] Hypershade Create USDPreviewSurface Makes Legacy USDPreviewSurface

[Ziethriel]

Describe the bug
When using the right click > create menu in the hypershade materials thumbnails workspace, you get the old USDPreviewSurface that shows as a green missing material instead of the new USDPreviewSurface you get with other methods.

Steps to reproduce
Steps to reproduce the behavior:

1. Go to Hypershade
2. Right Click in the blank space next to the thumbnails
3. Navigate the marking menu to Create > Materials > USDPreviewSurface
4. Observe the 3d preview render shows a green missing material surface.

Expected behavior
The USDPreviewSurface that results should be the same as if you add it from the create interface, or hitting tab in the workspace.

Specs (if applicable):

• Maya 2025.1
• MayaUSD 0.28

Additional context
Add any other context about the problem here.

[santosg87]

thank you for reporting this!

I am able to see the issue as well. for some reason, when creating the usdPreviewSurface material using the marking menu as described here.

the initial connection between the shader and the shadingGroup is done from outColor to Displacement Shader, instead of Surface Shader.

this is also the case with using the general hypershade "create" menu.

one workaround (although, note not ideal, so we would still rather have this be fixed) is to manually switch the connection to the right attribute.