Fix: Missing GeometryNodeCustomGroup

This is a minor change to add some plumbing code
to support custom geo nodes. This is working the
same way as the custom cycles and compositor nodes.

An example add-in is attached to D10784

Reviewed By: JacquesLucke

Differential Revision: http://developer.blender.org/D10784

1 files changed, 14 insertions, 0 deletions

diff --git a/source/blender/nodes/geometry/nodes/node_geo_common.cc b/source/blender/nodes/geometry/nodes/node_geo_common.cc
index 441ad6bdc13..e2bb7e9f939 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_common.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_common.cc
@@ -43,3 +43,17 @@ void register_node_type_geo_group(void)
 
   nodeRegisterType(&ntype);
 }
+
+void register_node_type_geo_custom_group(bNodeType *ntype)
+{
+  /* These methods can be overridden but need a default implementation otherwise. */
+  if (ntype->poll == nullptr) {
+    ntype->poll = geo_node_poll_default;
+  }
+  if (ntype->insert_link == nullptr) {
+    ntype->insert_link = node_insert_link_default;
+  }
+  if (ntype->update_internal_links == nullptr) {
+    ntype->update_internal_links = node_update_internal_links_default;
+  }
+}