Export from Maya to Blender with Textures?

[Oscalon]

Hey everyone,

I have a file in Maya with VRAY materials. I'm trying to export it to Blender. I've tried .obj, .fbx, and .dae. When I use these, material properties like roughness and spec come through, but none of the materials created in Blender have any textures. Does anyone know if there's a way to make this work, or some other format that will work? Is there a proper way to transfer a scene?

[Svetlozar Draganov]

There is an option to import .vrmat and .vrscene material in V-Ray for Blender but we have found there is an issue with it if materials are exported from latest V-Ray version for Maya.
We'll have a look a that, meanwhile you may try and see if it works for you or not.

To export materials in .vrmat / .vrscene format from Maya you need to:

1. Enable Exrpot to .vrscene file option here:
   
2. Use VRMat Converter from Create>V-Ray menu:
   

To import material in V-Ray for Blender you need to select VRay: Import Materials option from File > Import menu

[Oscalon]

Thank you for the response! I have tried this and run into a couple of errors:

First, when doing the VRmat Converter, I am getting the following error:

# Error: file: E:/Program Files/Autodesk/Maya2019/vray/scripts/vrayVRmatConverter.mel line 212: NameError: file E:\Program Files\Autodesk\Maya2019\vray\scripts\vrmatConverte r.py line 740: global name 'sqrt' is not defined


If the converter is set to Export in one vrmat, then it exports the textures to the target folder, but does not create any .vrmat files.
If it is not, then it does create a folder with a .vrmat and associated textures for each material.

However,w hen I attempt to import these into VR blender, I get this error and nothing imports:

Traceback (most recent call last):
File "E:\Program Files\Chaos Group\Blender 2.79 (With V-Ray Additions)\2.79\scripts\addons\vb30\nodes\operator s\import_file.py", line 295, in execute
return ImportMaterials(context, self.filepath, self.base_material, self.use_fake_user)
File "E:\Program Files\Chaos Group\Blender 2.79 (With V-Ray Additions)\2.79\scripts\addons\vb30\nodes\operator s\import_file.py", line 209, in ImportMaterials
maNode = NodesImport.createNode(ntree, outputNode, vrsceneDict, pluginDesc)
File "E:\Program Files\Chaos Group\Blender 2.79 (With V-Ray Additions)\2.79\scripts\addons\vb30\nodes\importin g.py", line 664, in createNode
connectedNode = createNode(ntree, n, vrsceneDict, connectedPlugin)
File "E:\Program Files\Chaos Group\Blender 2.79 (With V-Ray Additions)\2.79\scripts\addons\vb30\nodes\importin g.py", line 664, in createNode
connectedNode = createNode(ntree, n, vrsceneDict, connectedPlugin)
File "E:\Program Files\Chaos Group\Blender 2.79 (With V-Ray Additions)\2.79\scripts\addons\vb30\nodes\importin g.py", line 666, in createNode
ntree.links.new(connectedNode.outputs[inPluginOutputSocketName], n.inputs[attrSocketName])
KeyError: 'bpy_prop_collection[key]: key "Alpha Mult" not found'

location: <unknown location>:-1




Please let me know if there's anything else I can try!

[Oscalon]

Another issue: It seems that when exporting as separate materials, not all the materials export. My file has 88 materials, but only 48 are exporting. I can't identify any reason why. I can individually export materials that did not export when I had all of them selected.