Geometry Nodes: Add warnings for instances input in two nodes

Certain geometry nodes don't work properly on inputs that contain
instances, but don't display any warning that they aren't working.

The nodes now will display a warning that explains the situtation
iff the input contains any instances.

Differential Revision: https://developer.blender.org/D12858

1 files changed, 6 insertions, 0 deletions

diff --git a/source/blender/nodes/geometry/nodes/node_geo_proximity.cc b/source/blender/nodes/geometry/nodes/node_geo_proximity.cc
index 02694a4a496..ec4d6ceb728 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_proximity.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_proximity.cc
@@ -214,6 +214,12 @@ static void geo_node_proximity_exec(GeoNodeExecParams params)
     params.set_output("Distance", fn::make_constant_field<float>(0.0f));
   };
 
+  if (geometry_set_target.has_instances()) {
+    params.error_message_add(
+        NodeWarningType::Info,
+        TIP_("The node only supports realized mesh or point cloud data, instances are ignored"));
+  }
+
   if (!geometry_set_target.has_mesh() && !geometry_set_target.has_pointcloud()) {
     return return_default();
   }