3 files changed, 12 insertions, 0 deletions
diff --git a/source/blender/nodes/NOD_node_declaration.hh b/source/blender/nodes/NOD_node_declaration.hh
index 9b99026d6a7..cccaf93a7d7 100644
--- a/source/blender/nodes/NOD_node_declaration.hh
+++ b/source/blender/nodes/NOD_node_declaration.hh
@@ -86,6 +86,7 @@ class SocketDeclaration {
   std::string description_;
   bool hide_label_ = false;
   bool hide_value_ = false;
+  bool compact_ = false;
   bool is_multi_input_ = false;
   bool no_mute_links_ = false;
   bool is_attribute_name_ = false;
diff --git a/source/blender/nodes/NOD_socket_declarations.hh b/source/blender/nodes/NOD_socket_declarations.hh
index 7284accd1ec..98c8fa68876 100644
--- a/source/blender/nodes/NOD_socket_declarations.hh
+++ b/source/blender/nodes/NOD_socket_declarations.hh
@@ -104,6 +104,7 @@ class VectorBuilder : public SocketDeclarationBuilder<Vector> {
   VectorBuilder &subtype(PropertySubType subtype);
   VectorBuilder &min(const float min);
   VectorBuilder &max(const float max);
+  VectorBuilder &compact();
 };
 
 class BoolBuilder;
@@ -315,6 +316,12 @@ inline VectorBuilder &VectorBuilder::max(const float max)
   return *this;
 }
 
+inline VectorBuilder &VectorBuilder::compact()
+{
+  decl_->compact_ = true;
+  return *this;
+}
+
 /** \} */
 
 /* -------------------------------------------------------------------- */
diff --git a/source/blender/nodes/intern/node_declaration.cc b/source/blender/nodes/intern/node_declaration.cc
index e804d10ad75..7a19acd2510 100644
--- a/source/blender/nodes/intern/node_declaration.cc
+++ b/source/blender/nodes/intern/node_declaration.cc
@@ -56,6 +56,7 @@ bNodeSocket &SocketDeclaration::update_or_build(bNodeTree &ntree,
 
 void SocketDeclaration::set_common_flags(bNodeSocket &socket) const
 {
+  SET_FLAG_FROM_TEST(socket.flag, compact_, SOCK_COMPACT);
   SET_FLAG_FROM_TEST(socket.flag, hide_value_, SOCK_HIDE_VALUE);
   SET_FLAG_FROM_TEST(socket.flag, hide_label_, SOCK_HIDE_LABEL);
   SET_FLAG_FROM_TEST(socket.flag, is_multi_input_, SOCK_MULTI_INPUT);
@@ -70,6 +71,9 @@ bool SocketDeclaration::matches_common_data(const bNodeSocket &socket) const
   if (socket.identifier != identifier_) {
     return false;
   }
+  if (((socket.flag & SOCK_COMPACT) != 0) != compact_) {
+    return false;
+  }
   if (((socket.flag & SOCK_HIDE_VALUE) != 0) != hide_value_) {
     return false;
   }