3 files changed, 15 insertions, 1 deletions
diff --git a/source/blender/makesdna/DNA_group_types.h b/source/blender/makesdna/DNA_group_types.h
index 45dd0cb9ff2..8f15aa85e97 100644
--- a/source/blender/makesdna/DNA_group_types.h
+++ b/source/blender/makesdna/DNA_group_types.h
@@ -60,6 +60,13 @@ typedef struct Group {
 	 * on the last used scene */
 	unsigned int layer;
 	float dupli_ofs[3];
+
+	struct SceneCollection *collection;
+	struct ViewLayer *view_layer;
 } Group;
 
+
+#define GROUP_MASTER_COLLECTION(_group) \
+	(((LayerCollection *)(_group)->view_layer->layer_collections.first)->scene_collection)
+
 #endif  /* __DNA_GROUP_TYPES_H__ */
diff --git a/source/blender/makesdna/DNA_layer_types.h b/source/blender/makesdna/DNA_layer_types.h
index 3eac7f0aab3..c677383cb6e 100644
--- a/source/blender/makesdna/DNA_layer_types.h
+++ b/source/blender/makesdna/DNA_layer_types.h
@@ -104,7 +104,8 @@ typedef struct SceneCollection {
 	char name[64]; /* MAX_NAME */
 	char filter[64]; /* MAX_NAME */
 	int active_object_index; /* for UI */
-	int pad;
+	char type;
+	char pad[3];
 	ListBase objects;           /* (Object *)LinkData->data */
 	ListBase filter_objects;    /* (Object *)LinkData->data */
 	ListBase scene_collections; /* nested collections */
@@ -134,6 +135,11 @@ enum {
 	VIEW_LAYER_FREESTYLE = (1 << 2),
 };
 
+/* SceneCollection->type */
+enum {
+	COLLECTION_TYPE_NONE =  0,
+	COLLECTION_TYPE_GROUP_INTERNAL = 1,
+};
 
 /* *************************************************************** */
 /* Engine Settings */
diff --git a/source/blender/makesdna/DNA_object_types.h b/source/blender/makesdna/DNA_object_types.h
index a706ea50ebd..78c623f6408 100644
--- a/source/blender/makesdna/DNA_object_types.h
+++ b/source/blender/makesdna/DNA_object_types.h
@@ -371,6 +371,7 @@ typedef struct DupliObject {
 	struct ParticleSystem *particle_system;
 	unsigned int random_id;
 	unsigned int pad;
+	struct IDProperty *collection_properties;
 } DupliObject;
 
 /* **************** OBJECT ********************* */