glTF exporter: Fix T99306 : Fix camera & light export when Yup is off

io_scene_gltf2/__init__.py

@@ -4,7 +4,7 @@
 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": (3, 3, 10),
+    "version": (3, 3, 11),
     'blender': (3, 3, 0),
     'location': 'File > Import-Export',
     'description': 'Import-Export as glTF 2.0',

io_scene_gltf2/blender/exp/gltf2_blender_gather_tree.py

@@ -163,10 +163,16 @@ class VExportTree:
             # So real world matrix is collection world_matrix @ "world_matrix" of object
             node.matrix_world = parent_coll_matrix_world @ blender_object.matrix_world.copy()
             if node.blender_type == VExportNode.CAMERA and self.export_settings[gltf2_blender_export_keys.CAMERAS]:
-                correction = Quaternion((2**0.5/2, -2**0.5/2, 0.0, 0.0))
+                if self.export_settings[gltf2_blender_export_keys.YUP]:
+                    correction = Quaternion((2**0.5/2, -2**0.5/2, 0.0, 0.0))
+                else:
+                    correction = Matrix.Identity(4).to_quaternion()
                 node.matrix_world @= correction.to_matrix().to_4x4()
             elif node.blender_type == VExportNode.LIGHT and self.export_settings[gltf2_blender_export_keys.LIGHTS]:
-                correction = Quaternion((2**0.5/2, -2**0.5/2, 0.0, 0.0))
+                if self.export_settings[gltf2_blender_export_keys.YUP]:
+                    correction = Quaternion((2**0.5/2, -2**0.5/2, 0.0, 0.0))
+                else:
+                    correction = Matrix.Identity(4).to_quaternion()
                 node.matrix_world @= correction.to_matrix().to_4x4()
         elif node.blender_type == VExportNode.BONE:
             if self.export_settings['gltf_current_frame'] is True: