Cleanup: Pass instance group result vector as an argument

This will allow retrieving the instance groups from multiple geometry
sets and avoiding needing vectors of vectors to store the results.
This is useful when retrieving instances from a multi-input socket
of geometries.

1 files changed, 2 insertions, 1 deletions

diff --git a/source/blender/nodes/geometry/nodes/node_geo_point_distribute.cc b/source/blender/nodes/geometry/nodes/node_geo_point_distribute.cc
index 2e3460ee5fe..1e1f5e9d085 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_point_distribute.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_point_distribute.cc
@@ -636,7 +636,8 @@ static void geo_node_point_distribute_exec(GeoNodeExecParams params)
     return;
   }
 
-  Vector<GeometryInstanceGroup> set_groups = bke::geometry_set_gather_instances(geometry_set);
+  Vector<GeometryInstanceGroup> set_groups;
+  geometry_set_gather_instances(geometry_set, set_groups);
   if (set_groups.is_empty()) {
     params.set_output("Geometry", GeometrySet());
     return;