diffuse light setting in pickle, cleanup without render mutex set

Author: ChrLackner

webgpu/light.py

@@ -45,6 +45,7 @@ def __getstate__(self):
             "key": self.key,
             "fill": self.fill,
             "ambient": self.ambient,
+            "diffuse": self.diffuse,
             "specular": self.specular,
             "shininess": self.shininess,
             "wrap": self.wrap,
@@ -55,8 +56,9 @@ def __getstate__(self):
         return state
 
     def __setstate__(self, state):
-        self.keys = state["key"]
+        self.key = state["key"]
         self.fill = state["fill"]
+        self.diffuse = state.get("diffuse", 0.75)
         self.ambient = state["ambient"]
         self.specular = state["specular"]
         self.shininess = state["shininess"]

webgpu/scene.py

@@ -336,6 +336,8 @@ def render(self, t=0, rerender_if_update_needed=True):
 
     def cleanup(self):
         """Detach the scene from its canvas, unregister callbacks, and release JS proxies."""
+        if self._render_mutex is None:
+            return
         with self._render_mutex:
             if self.canvas is not None:
                 self.options.camera.unregister_callbacks(self.input_handler)