hydra_storm/engine.py

@@ -2,6 +2,9 @@
 # Copyright 2011-2022 Blender Foundation
 
 # <pep8 compliant>
+import os
+import platform
+from pathlib import Path
 
 import bpy
 from bpy_hydra import HydraRenderEngine
@@ -17,6 +20,13 @@ class StormHydraRenderEngine(HydraRenderEngine):
 
     delegate_id = 'HdStormRendererPlugin'
 
+    @classmethod
+    def register(cls):
+        super().register()
+        separator = ';' if platform.system() == 'Windows' else ':'
+        os.environ['PXR_MTLX_STDLIB_SEARCH_PATHS'] = os.environ.get('PXR_MTLX_STDLIB_SEARCH_PATHS', '') + separator + \
+                                                     str(Path(bpy.app.binary_path).parent) + '/materialx/libraries;'
+
     def get_delegate_settings(self, engine_type):
         settings = bpy.context.scene.hydra_storm
         return {