For example, if I wished to write a Python script that lists the Base Color, Metallic, Specular, Roughness, Anistopy etc. nodes and what textures are attached to each node, would this be possible and if so how would I go about it?
I am already aware that unreal.AssetRegistryHelpers.get_asset_registry().get_dependencies(package_path, options) will give me a list of dependent textures, but it gives me no context as to which nodes each texture file is connected to.
I don’t think there’s a direct way to do that right now. The “MaterialEditingLibrary” provides some functions, but not enough. We need to create some blueprint callable function ourselves. Just like below. I will add this to my plugin in the next version. Python Editor Extended API - TAPython
Another way is to export the material, then use python to parse the exported “.t3d” or “.copy” file, which contains the full information of the material.
If you have the Material loaded, like
material = unreal.EditorAssetLibrary.load_asset(<asset_path>)
You can then run an ObjectIterator
it = unreal.ObjectIterator()
for x in it:
if isinstance(x, unreal.MaterialExpression) or x.get_path_name().startswith(<asset_path>)):
print(x)
Which will print all nodes in your loaded material
The MaterialEdititingLibrary should then have methods you can use to get how nodes are connected
@chpsemail Did you managed to add log_material_tree to your plugin? It would be insanely useful to me.