[Bf-blender-cvs] [888b879f5f4] blender-v3.0-release: Fix: Incorrect transfer attribute error message with curves

[Hans Goudey]

Commit: 888b879f5f4ea8ef5f01d466ab0871b48c8f0a95
Author: Hans Goudey
Date:   Fri Nov 12 13:25:22 2021 -0600
Branches: blender-v3.0-release
https://developer.blender.org/rB888b879f5f4ea8ef5f01d466ab0871b48c8f0a95

Fix: Incorrect transfer attribute error message with curves

The node does support curves, but only in index mode (see T88630)
So add a specific error message for the nearest mode, and let the
node support curves in the declaration.

Differential Revision: https://developer.blender.org/D13205

===================================================================

M	source/blender/nodes/geometry/nodes/node_geo_transfer_attribute.cc

===================================================================

diff --git a/source/blender/nodes/geometry/nodes/node_geo_transfer_attribute.cc b/source/blender/nodes/geometry/nodes/node_geo_transfer_attribute.cc
index f1b100c15d0..9754b3f81a0 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_transfer_attribute.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_transfer_attribute.cc
@@ -42,7 +42,8 @@ static void geo_node_transfer_attribute_declare(NodeDeclarationBuilder &b)
 {
   b.add_input<decl::Geometry>(N_("Target"))
       .only_realized_data()
-      .supported_type({GEO_COMPONENT_TYPE_MESH, GEO_COMPONENT_TYPE_POINT_CLOUD});
+      .supported_type(
+          {GEO_COMPONENT_TYPE_MESH, GEO_COMPONENT_TYPE_POINT_CLOUD, GEO_COMPONENT_TYPE_CURVE});
 
   b.add_input<decl::Vector>(N_("Attribute")).hide_value().supports_field();
   b.add_input<decl::Float>(N_("Attribute"), "Attribute_001").hide_value().supports_field();
@@ -769,6 +770,8 @@ static void geo_node_transfer_attribute_exec(GeoNodeExecParams params)
     }
     case GEO_NODE_ATTRIBUTE_TRANSFER_NEAREST: {
       if (geometry.has_curve() && !geometry.has_mesh() && !geometry.has_pointcloud()) {
+        params.error_message_add(NodeWarningType::Error,
+                                 TIP_("The target geometry must contain a mesh or a point cloud"));
         return return_default();
       }
       auto fn = std::make_unique<NearestTransferFunction>(