glTF exporter: various fixes / enhancements

* export double-sided mesh flag
* add export time logging
* Enhacement of export at current frame / frame 0 management

1 files changed, 6 insertions, 3 deletions

diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials.py
index 74375145..41bb7649 100755
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials.py
@@ -27,7 +27,7 @@ from io_scene_gltf2.blender.exp import gltf2_blender_get
 
 
 @cached
-def gather_material(blender_material, export_settings):
+def gather_material(blender_material, mesh_double_sided, export_settings):
     """
     Gather the material used by the blender primitive.
 
@@ -41,7 +41,7 @@ def gather_material(blender_material, export_settings):
     material = gltf2_io.Material(
         alpha_cutoff=__gather_alpha_cutoff(blender_material, export_settings),
         alpha_mode=__gather_alpha_mode(blender_material, export_settings),
-        double_sided=__gather_double_sided(blender_material, export_settings),
+        double_sided=__gather_double_sided(blender_material, mesh_double_sided, export_settings),
         emissive_factor=__gather_emissive_factor(blender_material, export_settings),
         emissive_texture=__gather_emissive_texture(blender_material, export_settings),
         extensions=__gather_extensions(blender_material, export_settings),
@@ -87,7 +87,10 @@ def __gather_alpha_mode(blender_material, export_settings):
     return None
 
 
-def __gather_double_sided(blender_material, export_settings):
+def __gather_double_sided(blender_material, mesh_double_sided, export_settings):
+    if mesh_double_sided:
+        return True
+
     old_double_sided_socket = gltf2_blender_get.get_socket_or_texture_slot_old(blender_material, "DoubleSided")
     if old_double_sided_socket is not None and\
             not old_double_sided_socket.is_linked and\