[Bf-extensions-cvs] [c23d2a74] master: glTF exporter: fix exporing instances when apply modifier is disabled

[Julien Duroure]

Commit: c23d2a741e21e6d5f926a21ffc9fb51b50c39191
Author: Julien Duroure
Date:   Sat Nov 23 12:04:49 2019 +0100
Branches: master
https://developer.blender.org/rBAc23d2a741e21e6d5f926a21ffc9fb51b50c39191

glTF exporter: fix exporing instances when apply modifier is disabled

===================================================================

M	io_scene_gltf2/__init__.py
M	io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py

===================================================================

diff --git a/io_scene_gltf2/__init__.py b/io_scene_gltf2/__init__.py
index 1de1ed62..8e83de6c 100755
--- a/io_scene_gltf2/__init__.py
+++ b/io_scene_gltf2/__init__.py
@@ -15,7 +15,7 @@
 bl_info = {
     'name': 'glTF 2.0 format',
     'author': 'Julien Duroure, Norbert Nopper, Urs Hanselmann, Moritz Becher, Benjamin Schmithüsen, Jim Eckerlein, and many external contributors',
-    "version": (1, 1, 12),
+    "version": (1, 1, 13),
     'blender': (2, 81, 6),
     'location': 'File > Import-Export',
     'description': 'Import-Export as glTF 2.0',
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 cccfbd9d..a0cc9bf2 100755
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py
@@ -283,6 +283,15 @@ def __gather_mesh(blender_object, export_settings):
     else:
         blender_mesh = blender_object.data
         skip_filter = False
+        # If no skin are exported, no need to have vertex group, this will create a cache miss
+        if not export_settings[gltf2_blender_export_keys.SKINS]:
+            vertex_groups = None
+            modifiers = None
+        else:
+            # Check if there is an armature modidier
+            if len([mod for mod in blender_object.modifiers if mod.type == "ARMATURE"]) == 0:
+                vertex_groups = None # Not needed if no armature, avoid a cache miss
+                modifiers = None
 
     material_names = tuple([ms.material.name for ms in blender_object.material_slots if ms.material is not None])