materialx/nodes/generate_node_classes.py

@@ -274,7 +274,21 @@ from bpy.props import (
 ) 
 from {ADDON_ALIAS}.nodes.node import MxNode
 
+""")
 
+    if file_path.is_relative_to(utils.MX_LIBS_DIR):
+        code_strings.append(
+f"""from {ADDON_ALIAS}.utils import MX_LIBS_DIR
+FILE_PATH = MX_LIBS_DIR / "{(file_path.relative_to(utils.MX_LIBS_DIR)).as_posix()}"
+""")
+    elif file_path.is_relative_to(utils.MX_ADDON_LIBS_DIR):
+        code_strings.append(
+f"""from {ADDON_ALIAS}.utils import MX_ADDON_LIBS_DIR
+FILE_PATH = MX_ADDON_LIBS_DIR / "{(file_path.relative_to(utils.MX_ADDON_LIBS_DIR)).as_posix()}"
+""")
+    else:
+        code_strings.append(
+f"""
 FILE_PATH = "{file_path.as_posix()}"
 """)
 

materialx/utils.py

@@ -5,6 +5,7 @@ import os
 from pathlib import Path
 import tempfile
 import shutil
+import platform
 
 import MaterialX as mx
 import bpy
@@ -17,6 +18,8 @@ log = logging.Log('utils')
 ADDON_ROOT_DIR = Path(__file__).parent
 ADDON_DATA_DIR = Path(bpy.utils.user_resource('SCRIPTS', path=f"addons/{ADDON_ALIAS}_data", create=True))
 BL_DATA_DIR = Path(bpy.utils.resource_path('LOCAL')).parent / "materialx"
+if platform.system() == 'Windows':
+    BL_DATA_DIR = BL_DATA_DIR.parent / "blender.shared" / BL_DATA_DIR.name
 
 MX_LIBS_FOLDER = "libraries"
 MX_LIBS_DIR = BL_DATA_DIR / MX_LIBS_FOLDER