Heroes of the Storm — MADD type, which is not supported

[EKhots]

Hello!

Please tell me if it is possible to solve the issue related to the error "MADD type is not supported" when exporting a model. I tried to load old models and they are successfully exported. This is one of the new ones added to the game Heroes of the Storm, and when trying to export, an error like this appears:

The following errors occurred during the M3 export operation of Armature:
Traceback (most recent call last):
File "C:\Users\user\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\m3studio-main\io_m3_export.py", line 2917, in m3_export
exporter.m3_export(ob, valid_collections, filepath)
File "C:\Users\user\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\m3studio-main\io_m3_export.py", line 1141, in m3_export
self.create_physics_cloths(model, valid_collections['physics_cloths'], version=self.ob.m3_cloths_version) # TODO simulation rigging
File "C:\Users\user\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\m3studio-main\io_m3_export.py", line 2451, in create_physics_cloths
regn_inf = self.region_section[self.ob_to_region_index.index(mesh_ob)]
ValueError: bpy.data.objects['Mesh.005'] is not in list

The following warnings were given during the M3 export operation of Armature:
Material Valla_OWC20 is using the Buffer (MADD) type, which is not supported
<bpy_struct, Object("Mesh") at 0x000001939BE4C0F8> has no valid material assignments and will not be exported
Material Valla_OWC20 is using the Buffer (MADD) type, which is not supported
<bpy_struct, Object("Mesh.001") at 0x000001939BE4BAE8> has no valid material assignments and will not be exported
Material Valla_OWC20 is using the Buffer (MADD) type, which is not supported
<bpy_struct, Object("Mesh.004") at 0x000001939BE521F8> has no valid material assignments and will not be exported
Material Valla_OWC20 is using the Buffer (MADD) type, which is not supported
<bpy_struct, Object("Mesh.005") at 0x000001939BE50FC8> has no valid material assignments and will not be exported

Filename: storm_hero_d3demonhunterf_owc20_nomask.m3

Download: https://drive.google.com/file/d/1cf1bcndmhPBxMxFr2Ej_b9VMunU9cWyw/view?usp=sharing.

[Solstice245]

You need to manually convert the MADD material to another material or materials. It is able to list the textures used by the MADD material, but nothing else specifically is known about the format that would allow for automatic conversion. If you're intending only to edit other aspects of the model, and leave all MADD data intact, this is not currently supported, but may be feasible to implement either directly into the addon or as a utility script.