USD Export – Support exporting all UDIM tiles when using “Bake Materials”

Hi,

I noticed an issue when exporting USD assets that contain materials using UDIM textures.

When exporting USD, the “Bake Materials” option allows me to export the base textures and relink them correctly with the USD Preview Material. However, when the source texture is a UDIM/virtual texture, the export only includes the first UDIM tile (1001) and does not export the remaining tiles.

For example, if a material uses:

MyTexture.1001

MyTexture.1002

MyTexture.1003

MyTexture.1004

the USD export with Bake Materials only exports:

MyTexture.1001

This means the resulting USD asset does not contain the complete texture set and the material appearance is incorrect when opened in another USD-compatible application.

Feature request

Would it be possible to extend the Bake Materials USD export functionality so that, when a texture is detected as a UDIM texture / virtual texture, the exporter automatically exports all available UDIM tiles, rather than only the first tile?

Ideally, the exported USD Preview Material would also retain the UDIM texture pattern/reference so that all tiles are correctly resolved when the USD is opened in another application.

This would be especially useful for assets where UDIMs are commonly used.