Apex cloth material assigned to multiple material elements will not render correctly in Persona or when PIE/Simulate in the editor. Any material element other than element 0 will be masked/invisible when used.

This is a regression from 4.7 where the feature worked without issue, using the same test assets provided with this ticket.

See attached images for reference.

Steps to Reproduce

1. Import attached Cloth asset (or make your own with multiple materials in Max/Maya)
2. Open the Mesh
3. Apply the APK/APX cloth file
4. Assign the cloth file to each submeshes correct index. (material 1 = Submesh 0, Material 2 = submesh 1, etc)
5. Place in level
6. Simulate/PIE

Results: When looking at the mesh in persona or when in PIE/simulate the submesh materials will be masked.

Expected: The submesh materials should work like the first material that the cloth file is assigned to.

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ComponentUE - Simulation - Physics - Character
Affects Versions4.
Fix Commit2766528
Main Commit2775460
CreatedNov 12, 2015
ResolvedNov 13, 2015
UpdatedJul 14, 2021