Material Assignment Algorithm - matyalatte/Blender-Uasset-Addon GitHub Wiki

The inject function will reorder material ids by the following steps. If it failed to assign materials in proper order, check the steps to understand how it assigns.

Step1. Compare Slot Names

Mesh assets have slot names for each material slot. If Blender materials have slot_name as custom properties, the addon will use it to assign materials.

Step2. Compare Material Names

If there are unassigned materials, the addon will use material names to assign them.

Step3. Compare Material Names Removed Suffix

If there are still unassigned materials, the addon will remove suffix (.xxx) from material names and try to assign materials.

Step4. Assign Remains

If there are still unassigned materials, the addon will assign them in the list order.