1 files changed, 6 insertions, 1 deletions
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py
index c13af707..c0fa11ff 100755
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py
@@ -224,6 +224,11 @@ def __gather_mesh(blender_object, export_settings):
     if blender_object.type != "MESH":
         return None
 
+    modifier_normal_types = [
+        "NORMAL_EDIT",
+        "WEIGHTED_NORMAL"
+    ]
+
     # If not using vertex group, they are irrelevant for caching --> ensure that they do not trigger a cache miss
     vertex_groups = blender_object.vertex_groups
     modifiers = blender_object.modifiers
@@ -239,7 +244,7 @@ def __gather_mesh(blender_object, export_settings):
             edge_split = blender_object.modifiers.new('Temporary_Auto_Smooth', 'EDGE_SPLIT')
             edge_split.split_angle = blender_object.data.auto_smooth_angle
             edge_split.use_edge_angle = not blender_object.data.has_custom_normals
-            blender_object.data.use_auto_smooth = False
+            blender_object.data.use_auto_smooth = any([m in modifier_normal_types for m in [mod.type for mod in blender_object.modifiers]])
             bpy.context.view_layer.update()
 
         armature_modifiers = {}