glTF importer/exporter: Manage some official Khronos Extensions about Materials

    KHR_materials_ior
    KHR_materials_sheen
    KHR_materials_specular
    KHR_materials_transmission
    KHR_materials_variants
    KHR_materials_emissive_strength
    KHR_materials_volume

Documentation update is still in progress

1 files changed, 17 insertions, 0 deletions

diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_tree.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_tree.py
index 0377a6b7..36772667 100644
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_tree.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_tree.py
@@ -468,3 +468,20 @@ class VExportTree:
                 skin = gather_skin(n.uuid, self.export_settings)
                 skins.append(skin)
         return skins
+
+    def variants_reset_to_original(self):
+        # Only if Variants are displayed and exported
+        if bpy.context.preferences.addons['io_scene_gltf2'].preferences.KHR_materials_variants_ui is False:
+            return
+        objects = [self.nodes[o].blender_object for o in self.get_all_node_of_type(VExportNode.OBJECT) if self.nodes[o].blender_object.type == "MESH" \
+            and self.nodes[o].blender_object.data.get('gltf2_variant_default_materials') is not None]
+        for obj in objects:
+            # loop on material slots ( primitives )
+            for mat_slot_idx, s in enumerate(obj.material_slots):
+                # Check if there is a default material for this slot
+                for i in obj.data.gltf2_variant_default_materials:
+                    if i.material_slot_index == mat_slot_idx:
+                        s.material = i.default_material
+                        break
+
+            # If not found, keep current material as default