3 files changed, 22 insertions, 8 deletions
diff --git a/source/blender/blenkernel/intern/lib_query.c b/source/blender/blenkernel/intern/lib_query.c
index 713eef6d0a1..be535e28f17 100644
--- a/source/blender/blenkernel/intern/lib_query.c
+++ b/source/blender/blenkernel/intern/lib_query.c
@@ -869,17 +869,11 @@ static void library_foreach_ID_link(Main *bmain,
         break;
       }
       case ID_PT: {
-        PointCloud *pointcloud = (PointCloud *)id;
-        for (i = 0; i < pointcloud->totcol; i++) {
-          CALLBACK_INVOKE(pointcloud->mat[i], IDWALK_CB_USER);
-        }
+        BLI_assert(0);
         break;
       }
       case ID_VO: {
-        Volume *volume = (Volume *)id;
-        for (i = 0; i < volume->totcol; i++) {
-          CALLBACK_INVOKE(volume->mat[i], IDWALK_CB_USER);
-        }
+        BLI_assert(0);
         break;
       }
 
diff --git a/source/blender/blenkernel/intern/pointcloud.c b/source/blender/blenkernel/intern/pointcloud.c
index 1639f0b0899..e03888dcad7 100644
--- a/source/blender/blenkernel/intern/pointcloud.c
+++ b/source/blender/blenkernel/intern/pointcloud.c
@@ -21,6 +21,7 @@
 #include "MEM_guardedalloc.h"
 
 #include "DNA_defaults.h"
+#include "DNA_material_types.h"
 #include "DNA_object_types.h"
 #include "DNA_pointcloud_types.h"
 
@@ -89,6 +90,14 @@ static void pointcloud_free_data(ID *id)
   MEM_SAFE_FREE(pointcloud->mat);
 }
 
+static void pointcloud_foreach_id(ID *id, LibraryForeachIDData *data)
+{
+  PointCloud *pointcloud = (PointCloud *)id;
+  for (int i = 0; i < pointcloud->totcol; i++) {
+    BKE_LIB_FOREACHID_PROCESS(data, pointcloud->mat[i], IDWALK_CB_USER);
+  }
+}
+
 IDTypeInfo IDType_ID_PT = {
     .id_code = ID_PT,
     .id_filter = FILTER_ID_PT,
@@ -103,6 +112,7 @@ IDTypeInfo IDType_ID_PT = {
     .copy_data = pointcloud_copy_data,
     .free_data = pointcloud_free_data,
     .make_local = NULL,
+    .foreach_id = pointcloud_foreach_id,
 };
 
 static void pointcloud_random(PointCloud *pointcloud)
diff --git a/source/blender/blenkernel/intern/volume.cc b/source/blender/blenkernel/intern/volume.cc
index 9bcc53363ad..26c5810aefa 100644
--- a/source/blender/blenkernel/intern/volume.cc
+++ b/source/blender/blenkernel/intern/volume.cc
@@ -21,6 +21,7 @@
 #include "MEM_guardedalloc.h"
 
 #include "DNA_defaults.h"
+#include "DNA_material_types.h"
 #include "DNA_object_types.h"
 #include "DNA_scene_types.h"
 #include "DNA_volume_types.h"
@@ -474,6 +475,14 @@ static void volume_free_data(ID *id)
 #endif
 }
 
+static void volume_foreach_id(ID *id, LibraryForeachIDData *data)
+{
+  Volume *volume = (Volume *)id;
+  for (int i = 0; i < volume->totcol; i++) {
+    BKE_LIB_FOREACHID_PROCESS(data, volume->mat[i], IDWALK_CB_USER);
+  }
+}
+
 IDTypeInfo IDType_ID_VO = {
     /* id_code */ ID_VO,
     /* id_filter */ FILTER_ID_VO,
@@ -488,6 +497,7 @@ IDTypeInfo IDType_ID_VO = {
     /* copy_data */ volume_copy_data,
     /* free_data */ volume_free_data,
     /* make_local */ nullptr,
+    /* foreach_id */ volume_foreach_id,
 };
 
 void BKE_volume_init_grids(Volume *volume)