glTF exporter: validate meshes before export

(removing NaN for example)

io_scene_gltf2/__init__.py

@@ -15,7 +15,7 @@
 bl_info = {
     'name': 'glTF 2.0 format',
     'author': 'Julien Duroure, Scurest, Norbert Nopper, Urs Hanselmann, Moritz Becher, Benjamin Schmithüsen, Jim Eckerlein, and many external contributors',
-    "version": (1, 7, 26),
+    "version": (1, 7, 27),
     'blender': (2, 91, 0),
     'location': 'File > Import-Export',
     'description': 'Import-Export as glTF 2.0',

io_scene_gltf2/blender/exp/gltf2_blender_gather_nodes.py

@@ -292,6 +292,9 @@ def __gather_mesh(blender_object, library, export_settings):
     if blender_object.type != "MESH":
         return None
 
+    # Be sure that object is valid (no NaN for example)
+    blender_object.data.validate()
+
     # 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