Geometry Nodes: Add named attribute nodes behind experimental flag

This commit adds three nodes:
- `Remove Attribute`: Removes an attribute with the given name
- `Named Attribute`: A field input node
- `Store Named Attribute`: Puts results of a field in a named attribute

They are added behind a new experimental feature flag, because further
development of attribute search and name dependency visualization will
happen as separate steps.

Ref T91742

Differential Revision: https://developer.blender.org/D12685

7 files changed, 424 insertions, 8 deletions

diff --git a/source/blender/nodes/NOD_geometry.h b/source/blender/nodes/NOD_geometry.h
index 8aea54f8ac5..be21dd4b88f 100644
--- a/source/blender/nodes/NOD_geometry.h
+++ b/source/blender/nodes/NOD_geometry.h
@@ -49,7 +49,7 @@ void register_node_type_geo_attribute_fill(void);
 void register_node_type_geo_attribute_map_range(void);
 void register_node_type_geo_attribute_math(void);
 void register_node_type_geo_attribute_mix(void);
-void register_node_type_geo_attribute_remove(void);
+void register_node_type_geo_legacy_attribute_remove(void);
 void register_node_type_geo_attribute_separate_xyz(void);
 void register_node_type_geo_attribute_statistic(void);
 void register_node_type_geo_attribute_vector_math(void);
@@ -91,6 +91,7 @@ void register_node_type_geo_field_at_index(void);
 void register_node_type_geo_flip_faces(void);
 void register_node_type_geo_geometry_to_instance(void);
 void register_node_type_geo_image_texture(void);
+void register_node_type_geo_input_named_attribute(void);
 void register_node_type_geo_input_curve_handles(void);
 void register_node_type_geo_input_curve_tilt(void);
 void register_node_type_geo_input_id(void);
@@ -144,6 +145,7 @@ void register_node_type_geo_points_to_volume(void);
 void register_node_type_geo_proximity(void);
 void register_node_type_geo_raycast(void);
 void register_node_type_geo_realize_instances(void);
+void register_node_type_geo_remove_attribute(void);
 void register_node_type_geo_rotate_instances(void);
 void register_node_type_geo_sample_texture(void);
 void register_node_type_geo_scale_elements(void);
@@ -162,6 +164,7 @@ void register_node_type_geo_set_position(void);
 void register_node_type_geo_set_shade_smooth(void);
 void register_node_type_geo_set_spline_cyclic(void);
 void register_node_type_geo_set_spline_resolution(void);
+void register_node_type_geo_store_named_attribute(void);
 void register_node_type_geo_string_join(void);
 void register_node_type_geo_string_to_curves(void);
 void register_node_type_geo_subdivision_surface(void);
diff --git a/source/blender/nodes/NOD_static_types.h b/source/blender/nodes/NOD_static_types.h
index 700c3a83b70..97a6b8a6e63 100644
--- a/source/blender/nodes/NOD_static_types.h
+++ b/source/blender/nodes/NOD_static_types.h
@@ -286,6 +286,7 @@ DefNode(GeometryNode, GEO_NODE_LEGACY_ATTRIBUTE_MATH, def_geo_attribute_math, "L
 DefNode(GeometryNode, GEO_NODE_LEGACY_ATTRIBUTE_MIX, def_geo_attribute_mix, "LEGACY_ATTRIBUTE_MIX", LegacyAttributeMix, "Attribute Mix", "")
 DefNode(GeometryNode, GEO_NODE_LEGACY_ATTRIBUTE_PROXIMITY, def_geo_legacy_attribute_proximity, "LEGACY_ATTRIBUTE_PROXIMITY", LegacyAttributeProximity, "Attribute Proximity", "")
 DefNode(GeometryNode, GEO_NODE_LEGACY_ATTRIBUTE_RANDOMIZE, def_geo_attribute_randomize, "LEGACY_ATTRIBUTE_RANDOMIZE", LegacyAttributeRandomize, "Attribute Randomize", "")
+DefNode(GeometryNode, GEO_NODE_LEGACY_ATTRIBUTE_REMOVE, 0, "LEGACY_ATTRIBUTE_REMOVE", LegacyAttributeRemove, "Attribute Remove", "")
 DefNode(GeometryNode, GEO_NODE_LEGACY_ATTRIBUTE_SAMPLE_TEXTURE, 0, "LEGACY_ATTRIBUTE_SAMPLE_TEXTURE", LegacyAttributeSampleTexture, "Attribute Sample Texture", "")
 DefNode(GeometryNode, GEO_NODE_LEGACY_ATTRIBUTE_SEPARATE_XYZ, def_geo_attribute_separate_xyz, "LEGACY_ATTRIBUTE_SEPARATE_XYZ", LegacyAttributeSeparateXYZ, "Attribute Separate XYZ", "")
 DefNode(GeometryNode, GEO_NODE_LEGACY_ATTRIBUTE_TRANSFER, def_geo_attribute_transfer, "LEGACY_ATTRIBUTE_TRANSFER", LegacyAttributeTransfer, "Attribute Transfer", "")
@@ -315,7 +316,6 @@ DefNode(GeometryNode, GEO_NODE_LEGACY_SUBDIVISION_SURFACE, def_geo_subdivision_s
 DefNode(GeometryNode, GEO_NODE_LEGACY_VOLUME_TO_MESH, def_geo_volume_to_mesh, "LEGACY_VOLUME_TO_MESH", LegacyVolumeToMesh, "Volume to Mesh", "")
 
 DefNode(GeometryNode, GEO_NODE_ATTRIBUTE_DOMAIN_SIZE, def_geo_attribute_domain_size, "ATTRIBUTE_DOMAIN_SIZE", AttributeDomainSize, "Domain Size", "")
-DefNode(GeometryNode, GEO_NODE_ATTRIBUTE_REMOVE, 0, "ATTRIBUTE_REMOVE", AttributeRemove, "Attribute Remove", "")
 DefNode(GeometryNode, GEO_NODE_ATTRIBUTE_STATISTIC, def_geo_attribute_statistic, "ATTRIBUTE_STATISTIC", AttributeStatistic, "Attribute Statistic", "")
 DefNode(GeometryNode, GEO_NODE_BOUNDING_BOX, 0, "BOUNDING_BOX", BoundBox, "Bounding Box", "")
 DefNode(GeometryNode, GEO_NODE_CAPTURE_ATTRIBUTE, def_geo_attribute_capture, "CAPTURE_ATTRIBUTE", CaptureAttribute, "Capture Attribute", "")
@@ -349,6 +349,7 @@ DefNode(GeometryNode, GEO_NODE_FILLET_CURVE, def_geo_curve_fillet, "FILLET_CURVE
 DefNode(GeometryNode, GEO_NODE_FLIP_FACES, 0, "FLIP_FACES", FlipFaces, "Flip Faces", "")
 DefNode(GeometryNode, GEO_NODE_GEOMETRY_TO_INSTANCE, 0, "GEOMETRY_TO_INSTANCE", GeometryToInstance, "Geometry to Instance", "")
 DefNode(GeometryNode, GEO_NODE_IMAGE_TEXTURE, def_geo_image_texture, "IMAGE_TEXTURE", ImageTexture, "Image Texture", "")
+DefNode(GeometryNode, GEO_NODE_INPUT_NAMED_ATTRIBUTE, def_geo_input_named_attribute, "INPUT_ATTRIBUTE", InputNamedAttribute, "Named Attribute", "")
 DefNode(GeometryNode, GEO_NODE_INPUT_CURVE_HANDLES, 0, "INPUT_CURVE_HANDLES", InputCurveHandlePositions, "Curve Handle Positions", "")
 DefNode(GeometryNode, GEO_NODE_INPUT_CURVE_TILT, 0, "INPUT_CURVE_TILT", InputCurveTilt, "Curve Tilt", "")
 DefNode(GeometryNode, GEO_NODE_INPUT_ID, 0, "INPUT_ID", InputID, "ID", "")
@@ -394,6 +395,7 @@ DefNode(GeometryNode, GEO_NODE_POINTS_TO_VERTICES, 0, "POINTS_TO_VERTICES", Poin
 DefNode(GeometryNode, GEO_NODE_POINTS_TO_VOLUME, def_geo_points_to_volume, "POINTS_TO_VOLUME", PointsToVolume, "Points to Volume", "")
 DefNode(GeometryNode, GEO_NODE_PROXIMITY, def_geo_proximity, "PROXIMITY", Proximity, "Geometry Proximity", "")
 DefNode(GeometryNode, GEO_NODE_RAYCAST, def_geo_raycast, "RAYCAST", Raycast, "Raycast", "")
+DefNode(GeometryNode, GEO_NODE_REMOVE_ATTRIBUTE, 0, "REMOVE_ATTRIBUTE", RemoveAttribute, "Remove Attribute", "")
 DefNode(GeometryNode, GEO_NODE_REALIZE_INSTANCES, def_geo_realize_instances, "REALIZE_INSTANCES", RealizeInstances, "Realize Instances", "")
 DefNode(GeometryNode, GEO_NODE_REPLACE_MATERIAL, 0, "REPLACE_MATERIAL", ReplaceMaterial, "Replace Material", "")
 DefNode(GeometryNode, GEO_NODE_RESAMPLE_CURVE, def_geo_curve_resample, "RESAMPLE_CURVE", ResampleCurve, "Resample Curve", "")
@@ -416,6 +418,7 @@ DefNode(GeometryNode, GEO_NODE_SET_SHADE_SMOOTH, 0, "SET_SHADE_SMOOTH", SetShade
 DefNode(GeometryNode, GEO_NODE_SET_SPLINE_CYCLIC, 0, "SET_SPLINE_CYCLIC", SetSplineCyclic, "Set Spline Cyclic", "")
 DefNode(GeometryNode, GEO_NODE_SET_SPLINE_RESOLUTION, 0, "SET_SPLINE_RESOLUTION", SetSplineResolution, "Set Spline Resolution", "")
 DefNode(GeometryNode, GEO_NODE_SPLIT_EDGES, 0, "SPLIT_EDGES", SplitEdges, "Split Edges", "")
+DefNode(GeometryNode, GEO_NODE_STORE_NAMED_ATTRIBUTE, def_geo_store_named_attribute, "STORE_NAMED_ATTRIBUTE", StoreNamedAttribute, "Store Named Attribute", "")
 DefNode(GeometryNode, GEO_NODE_STRING_JOIN, 0, "STRING_JOIN", StringJoin, "Join Strings", "")
 DefNode(GeometryNode, GEO_NODE_STRING_TO_CURVES, def_geo_string_to_curves, "STRING_TO_CURVES", StringToCurves, "String to Curves", "")
 DefNode(GeometryNode, GEO_NODE_SUBDIVIDE_CURVE, 0, "SUBDIVIDE_CURVE", SubdivideCurve, "Subdivide Curve", "")
diff --git a/source/blender/nodes/geometry/CMakeLists.txt b/source/blender/nodes/geometry/CMakeLists.txt
index 4d39240fed4..0e99d8ad646 100644
--- a/source/blender/nodes/geometry/CMakeLists.txt
+++ b/source/blender/nodes/geometry/CMakeLists.txt
@@ -38,6 +38,7 @@ set(SRC
   nodes/legacy/node_geo_legacy_attribute_mix.cc
   nodes/legacy/node_geo_legacy_attribute_proximity.cc
   nodes/legacy/node_geo_legacy_attribute_randomize.cc
+  nodes/legacy/node_geo_legacy_attribute_remove.cc
   nodes/legacy/node_geo_legacy_attribute_sample_texture.cc
   nodes/legacy/node_geo_legacy_attribute_separate_xyz.cc
   nodes/legacy/node_geo_legacy_attribute_transfer.cc
@@ -69,7 +70,6 @@ set(SRC
   nodes/node_geo_accumulate_field.cc
   nodes/node_geo_attribute_capture.cc
   nodes/node_geo_attribute_domain_size.cc
-  nodes/node_geo_attribute_remove.cc
   nodes/node_geo_attribute_statistic.cc
   nodes/node_geo_boolean.cc
   nodes/node_geo_bounding_box.cc
@@ -123,6 +123,7 @@ set(SRC
   nodes/node_geo_input_mesh_face_neighbors.cc
   nodes/node_geo_input_mesh_island.cc
   nodes/node_geo_input_mesh_vertex_neighbors.cc
+  nodes/node_geo_input_named_attribute.cc
   nodes/node_geo_input_normal.cc
   nodes/node_geo_input_position.cc
   nodes/node_geo_input_radius.cc
@@ -156,6 +157,7 @@ set(SRC
   nodes/node_geo_proximity.cc
   nodes/node_geo_raycast.cc
   nodes/node_geo_realize_instances.cc
+  nodes/node_geo_remove_attribute.cc
   nodes/node_geo_rotate_instances.cc
   nodes/node_geo_scale_elements.cc
   nodes/node_geo_scale_instances.cc
@@ -172,6 +174,7 @@ set(SRC
   nodes/node_geo_set_shade_smooth.cc
   nodes/node_geo_set_spline_cyclic.cc
   nodes/node_geo_set_spline_resolution.cc
+  nodes/node_geo_store_named_attribute.cc
   nodes/node_geo_string_join.cc
   nodes/node_geo_string_to_curves.cc
   nodes/node_geo_subdivision_surface.cc
diff --git a/source/blender/nodes/geometry/nodes/node_geo_attribute_remove.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_remove.cc
index cb7132d5ea2..cc7118fd305 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_attribute_remove.cc
+++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_legacy_attribute_remove.cc
@@ -2,7 +2,7 @@
 
 #include "node_geometry_util.hh"
 
-namespace blender::nodes::node_geo_attribute_remove_cc {
+namespace blender::nodes::node_geo_legacy_attribute_remove_cc {
 
 static void node_declare(NodeDeclarationBuilder &b)
 {
@@ -45,15 +45,16 @@ static void node_geo_exec(GeoNodeExecParams params)
   params.set_output("Geometry", geometry_set);
 }
 
-}  // namespace blender::nodes::node_geo_attribute_remove_cc
+}  // namespace blender::nodes::node_geo_legacy_attribute_remove_cc
 
-void register_node_type_geo_attribute_remove()
+void register_node_type_geo_legacy_attribute_remove()
 {
-  namespace file_ns = blender::nodes::node_geo_attribute_remove_cc;
+  namespace file_ns = blender::nodes::node_geo_legacy_attribute_remove_cc;
 
   static bNodeType ntype;
 
-  geo_node_type_base(&ntype, GEO_NODE_ATTRIBUTE_REMOVE, "Attribute Remove", NODE_CLASS_ATTRIBUTE);
+  geo_node_type_base(
+      &ntype, GEO_NODE_LEGACY_ATTRIBUTE_REMOVE, "Attribute Remove", NODE_CLASS_ATTRIBUTE);
   ntype.geometry_node_execute = file_ns::node_geo_exec;
   ntype.declare = file_ns::node_declare;
   nodeRegisterType(&ntype);
diff --git a/source/blender/nodes/geometry/nodes/node_geo_input_named_attribute.cc b/source/blender/nodes/geometry/nodes/node_geo_input_named_attribute.cc
new file mode 100644
index 00000000000..f6e2be9119c
--- /dev/null
+++ b/source/blender/nodes/geometry/nodes/node_geo_input_named_attribute.cc
@@ -0,0 +1,131 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include "UI_interface.h"
+#include "UI_resources.h"
+
+#include "NOD_socket_search_link.hh"
+
+#include "node_geometry_util.hh"
+
+namespace blender::nodes::node_geo_input_named_attribute_cc {
+
+NODE_STORAGE_FUNCS(NodeGeometryInputNamedAttribute)
+
+static void node_declare(NodeDeclarationBuilder &b)
+{
+  b.add_input<decl::String>(N_("Name")).is_attribute_name();
+
+  b.add_output<decl::Vector>(N_("Attribute"), "Attribute_Vector").field_source();
+  b.add_output<decl::Float>(N_("Attribute"), "Attribute_Float").field_source();
+  b.add_output<decl::Color>(N_("Attribute"), "Attribute_Color").field_source();
+  b.add_output<decl::Bool>(N_("Attribute"), "Attribute_Bool").field_source();
+  b.add_output<decl::Int>(N_("Attribute"), "Attribute_Int").field_source();
+}
+
+static void node_layout(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr)
+{
+  uiItemR(layout, ptr, "data_type", 0, "", ICON_NONE);
+}
+
+static void node_init(bNodeTree *UNUSED(tree), bNode *node)
+{
+  NodeGeometryInputNamedAttribute *data = MEM_cnew<NodeGeometryInputNamedAttribute>(__func__);
+  data->data_type = CD_PROP_FLOAT;
+  node->storage = data;
+}
+
+static void node_update(bNodeTree *ntree, bNode *node)
+{
+  const NodeGeometryInputNamedAttribute &storage = node_storage(*node);
+  const CustomDataType data_type = static_cast<CustomDataType>(storage.data_type);
+
+  bNodeSocket *socket_vector = (bNodeSocket *)node->outputs.first;
+  bNodeSocket *socket_float = socket_vector->next;
+  bNodeSocket *socket_color4f = socket_float->next;
+  bNodeSocket *socket_boolean = socket_color4f->next;
+  bNodeSocket *socket_int32 = socket_boolean->next;
+
+  nodeSetSocketAvailability(ntree, socket_vector, data_type == CD_PROP_FLOAT3);
+  nodeSetSocketAvailability(ntree, socket_float, data_type == CD_PROP_FLOAT);
+  nodeSetSocketAvailability(ntree, socket_color4f, data_type == CD_PROP_COLOR);
+  nodeSetSocketAvailability(ntree, socket_boolean, data_type == CD_PROP_BOOL);
+  nodeSetSocketAvailability(ntree, socket_int32, data_type == CD_PROP_INT32);
+}
+
+static void node_gather_link_searches(GatherLinkSearchOpParams &params)
+{
+  if (U.experimental.use_named_attribute_nodes == 0) {
+    return;
+  }
+  const NodeDeclaration &declaration = *params.node_type().fixed_declaration;
+  search_link_ops_for_declarations(params, declaration.inputs());
+
+  if (params.in_out() == SOCK_OUT) {
+    const std::optional<CustomDataType> type = node_data_type_to_custom_data_type(
+        static_cast<eNodeSocketDatatype>(params.other_socket().type));
+    if (type && *type != CD_PROP_STRING) {
+      /* The input and output sockets have the same name. */
+      params.add_item(IFACE_("Attribute"), [type](LinkSearchOpParams &params) {
+        bNode &node = params.add_node("GeometryNodeInputNamedAttribute");
+        node_storage(node).data_type = *type;
+        params.update_and_connect_available_socket(node, "Attribute");
+      });
+    }
+  }
+}
+
+static void node_geo_exec(GeoNodeExecParams params)
+{
+  const NodeGeometryInputNamedAttribute &storage = node_storage(params.node());
+  const CustomDataType data_type = static_cast<CustomDataType>(storage.data_type);
+
+  const std::string name = params.extract_input<std::string>("Name");
+
+  if (!U.experimental.use_named_attribute_nodes) {
+    params.set_default_remaining_outputs();
+    return;
+  }
+
+  switch (data_type) {
+    case CD_PROP_FLOAT:
+      params.set_output("Attribute_Float", AttributeFieldInput::Create<float>(std::move(name)));
+      break;
+    case CD_PROP_FLOAT3:
+      params.set_output("Attribute_Vector", AttributeFieldInput::Create<float3>(std::move(name)));
+      break;
+    case CD_PROP_COLOR:
+      params.set_output("Attribute_Color",
+                        AttributeFieldInput::Create<ColorGeometry4f>(std::move(name)));
+      break;
+    case CD_PROP_BOOL:
+      params.set_output("Attribute_Bool", AttributeFieldInput::Create<bool>(std::move(name)));
+      break;
+    case CD_PROP_INT32:
+      params.set_output("Attribute_Int", AttributeFieldInput::Create<int>(std::move(name)));
+      break;
+    default:
+      break;
+  }
+}
+
+}  // namespace blender::nodes::node_geo_input_named_attribute_cc
+
+void register_node_type_geo_input_named_attribute()
+{
+  namespace file_ns = blender::nodes::node_geo_input_named_attribute_cc;
+
+  static bNodeType ntype;
+
+  geo_node_type_base(&ntype, GEO_NODE_INPUT_NAMED_ATTRIBUTE, "Named Attribute", NODE_CLASS_INPUT);
+  ntype.geometry_node_execute = file_ns::node_geo_exec;
+  ntype.declare = file_ns::node_declare;
+  ntype.draw_buttons = file_ns::node_layout;
+  ntype.gather_link_search_ops = file_ns::node_gather_link_searches;
+  ntype.updatefunc = file_ns::node_update;
+  node_type_init(&ntype, file_ns::node_init);
+  node_type_storage(&ntype,
+                    "NodeGeometryInputNamedAttribute",
+                    node_free_standard_storage,
+                    node_copy_standard_storage);
+  nodeRegisterType(&ntype);
+}
diff --git a/source/blender/nodes/geometry/nodes/node_geo_remove_attribute.cc b/source/blender/nodes/geometry/nodes/node_geo_remove_attribute.cc
new file mode 100644
index 00000000000..202241affeb
--- /dev/null
+++ b/source/blender/nodes/geometry/nodes/node_geo_remove_attribute.cc
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include "node_geometry_util.hh"
+
+#include "NOD_socket_search_link.hh"
+
+namespace blender::nodes::node_geo_remove_attribute_cc {
+
+static void node_declare(NodeDeclarationBuilder &b)
+{
+  b.add_input<decl::Geometry>(N_("Geometry"));
+  b.add_input<decl::String>(N_("Name")).is_attribute_name();
+  b.add_output<decl::Geometry>(N_("Geometry"));
+}
+
+static void node_gather_link_searches(GatherLinkSearchOpParams &params)
+{
+  if (U.experimental.use_named_attribute_nodes == 0) {
+    return;
+  }
+  const NodeDeclaration &declaration = *params.node_type().fixed_declaration;
+  search_link_ops_for_declarations(params, declaration.inputs());
+  search_link_ops_for_declarations(params, declaration.outputs());
+}
+
+static void node_geo_exec(GeoNodeExecParams params)
+{
+  GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry");
+  const std::string name = params.extract_input<std::string>("Name");
+  if (name.empty() || !U.experimental.use_named_attribute_nodes) {
+    params.set_output("Geometry", std::move(geometry_set));
+    return;
+  }
+
+  std::atomic<bool> attribute_exists = false;
+  std::atomic<bool> cannot_delete = false;
+
+  geometry_set.modify_geometry_sets([&](GeometrySet &geometry_set) {
+    for (const GeometryComponentType type : {GEO_COMPONENT_TYPE_MESH,
+                                             GEO_COMPONENT_TYPE_POINT_CLOUD,
+                                             GEO_COMPONENT_TYPE_CURVE,
+                                             GEO_COMPONENT_TYPE_INSTANCES}) {
+      if (geometry_set.has(type)) {
+        /* First check if the attribute exists before getting write access,
+         * to avoid potentially expensive unnecessary copies. */
+        const GeometryComponent &read_only_component = *geometry_set.get_component_for_read(type);
+        if (read_only_component.attribute_exists(name)) {
+          attribute_exists = true;
+        }
+        else {
+          continue;
+        }
+
+        GeometryComponent &component = geometry_set.get_component_for_write(type);
+        if (!component.attribute_try_delete(name)) {
+          cannot_delete = true;
+        }
+      }
+    }
+  });
+
+  if (!attribute_exists) {
+    params.error_message_add(NodeWarningType::Info,
+                             TIP_("Attribute does not exist: \"") + name + "\"");
+  }
+  if (cannot_delete) {
+    params.error_message_add(NodeWarningType::Info,
+                             TIP_("Cannot delete attribute with name \"") + name + "\"");
+  }
+
+  params.set_output("Geometry", std::move(geometry_set));
+}
+
+}  // namespace blender::nodes::node_geo_remove_attribute_cc
+
+void register_node_type_geo_remove_attribute()
+{
+  namespace file_ns = blender::nodes::node_geo_remove_attribute_cc;
+
+  static bNodeType ntype;
+
+  geo_node_type_base(&ntype, GEO_NODE_REMOVE_ATTRIBUTE, "Remove Attribute", NODE_CLASS_ATTRIBUTE);
+  ntype.declare = file_ns::node_declare;
+  ntype.geometry_node_execute = file_ns::node_geo_exec;
+  ntype.gather_link_search_ops = file_ns::node_gather_link_searches;
+  nodeRegisterType(&ntype);
+}
diff --git a/source/blender/nodes/geometry/nodes/node_geo_store_named_attribute.cc b/source/blender/nodes/geometry/nodes/node_geo_store_named_attribute.cc
new file mode 100644
index 00000000000..5b0816fa3e3
--- /dev/null
+++ b/source/blender/nodes/geometry/nodes/node_geo_store_named_attribute.cc
@@ -0,0 +1,188 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include "UI_interface.h"
+#include "UI_resources.h"
+
+#include "NOD_socket_search_link.hh"
+
+#include "node_geometry_util.hh"
+
+namespace blender::nodes::node_geo_store_named_attribute_cc {
+
+NODE_STORAGE_FUNCS(NodeGeometryStoreNamedAttribute)
+
+static void node_declare(NodeDeclarationBuilder &b)
+{
+  b.add_input<decl::Geometry>(N_("Geometry"));
+  b.add_input<decl::String>(N_("Name")).is_attribute_name();
+  b.add_input<decl::Vector>(N_("Value"), "Value_Vector").supports_field();
+  b.add_input<decl::Float>(N_("Value"), "Value_Float").supports_field();
+  b.add_input<decl::Color>(N_("Value"), "Value_Color").supports_field();
+  b.add_input<decl::Bool>(N_("Value"), "Value_Bool").supports_field();
+  b.add_input<decl::Int>(N_("Value"), "Value_Int").supports_field();
+
+  b.add_output<decl::Geometry>(N_("Geometry"));
+}
+
+static void node_layout(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr)
+{
+  uiLayoutSetPropSep(layout, true);
+  uiLayoutSetPropDecorate(layout, false);
+  uiItemR(layout, ptr, "data_type", 0, "", ICON_NONE);
+  uiItemR(layout, ptr, "domain", 0, "", ICON_NONE);
+}
+
+static void node_init(bNodeTree *UNUSED(tree), bNode *node)
+{
+  NodeGeometryStoreNamedAttribute *data = MEM_cnew<NodeGeometryStoreNamedAttribute>(__func__);
+  data->data_type = CD_PROP_FLOAT;
+  data->domain = ATTR_DOMAIN_POINT;
+  node->storage = data;
+}
+
+static void node_update(bNodeTree *ntree, bNode *node)
+{
+  const NodeGeometryStoreNamedAttribute &storage = node_storage(*node);
+  const CustomDataType data_type = static_cast<CustomDataType>(storage.data_type);
+
+  bNodeSocket *socket_geometry = (bNodeSocket *)node->inputs.first;
+  bNodeSocket *socket_name = socket_geometry->next;
+  bNodeSocket *socket_vector = socket_name->next;
+  bNodeSocket *socket_float = socket_vector->next;
+  bNodeSocket *socket_color4f = socket_float->next;
+  bNodeSocket *socket_boolean = socket_color4f->next;
+  bNodeSocket *socket_int32 = socket_boolean->next;
+
+  nodeSetSocketAvailability(ntree, socket_vector, data_type == CD_PROP_FLOAT3);
+  nodeSetSocketAvailability(ntree, socket_float, data_type == CD_PROP_FLOAT);
+  nodeSetSocketAvailability(ntree, socket_color4f, data_type == CD_PROP_COLOR);
+  nodeSetSocketAvailability(ntree, socket_boolean, data_type == CD_PROP_BOOL);
+  nodeSetSocketAvailability(ntree, socket_int32, data_type == CD_PROP_INT32);
+}
+
+static void node_gather_link_searches(GatherLinkSearchOpParams &params)
+{
+  if (U.experimental.use_named_attribute_nodes == 0) {
+    return;
+  }
+  const NodeDeclaration &declaration = *params.node_type().fixed_declaration;
+  search_link_ops_for_declarations(params, declaration.inputs().take_front(2));
+
+  if (params.in_out() == SOCK_OUT) {
+    const std::optional<CustomDataType> type = node_data_type_to_custom_data_type(
+        static_cast<eNodeSocketDatatype>(params.other_socket().type));
+    if (type && *type != CD_PROP_STRING) {
+      /* The input and output sockets have the same name. */
+      params.add_item(IFACE_("Value"), [type](LinkSearchOpParams &params) {
+        bNode &node = params.add_node("GeometryNodeStoreNamedAttribute");
+        node_storage(node).data_type = *type;
+        params.update_and_connect_available_socket(node, "Value");
+      });
+    }
+  }
+}
+
+static void try_capture_field_on_geometry(GeometryComponent &component,
+                                          const StringRef name,
+                                          const AttributeDomain domain,
+                                          const GField &field)
+{
+  GeometryComponentFieldContext field_context{component, domain};
+  const int domain_size = component.attribute_domain_size(domain);
+  const IndexMask mask{IndexMask(domain_size)};
+
+  const CustomDataType data_type = bke::cpp_type_to_custom_data_type(field.cpp_type());
+
+  /* Don't use #add_with_destination because the field might depend on an attribute
+   * with that name, and changing it as part of evaluation might affect the result. */
+  fn::FieldEvaluator evaluator{field_context, &mask};
+  evaluator.add(field);
+  evaluator.evaluate();
+  const GVArray &result = evaluator.get_evaluated(0);
+  OutputAttribute attribute = component.attribute_try_get_for_output_only(name, domain, data_type);
+  if (attribute) {
+    result.materialize(attribute.as_span().data());
+    attribute.save();
+  }
+}
+
+static void node_geo_exec(GeoNodeExecParams params)
+{
+  GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry");
+  std::string name = params.extract_input<std::string>("Name");
+
+  if (!U.experimental.use_named_attribute_nodes) {
+    params.set_output("Geometry", std::move(geometry_set));
+    return;
+  }
+
+  const NodeGeometryStoreNamedAttribute &storage = node_storage(params.node());
+  const CustomDataType data_type = static_cast<CustomDataType>(storage.data_type);
+  const AttributeDomain domain = static_cast<AttributeDomain>(storage.domain);
+
+  GField field;
+  switch (data_type) {
+    case CD_PROP_FLOAT:
+      field = params.get_input<Field<float>>("Value_Float");
+      break;
+    case CD_PROP_FLOAT3:
+      field = params.get_input<Field<float3>>("Value_Vector");
+      break;
+    case CD_PROP_COLOR:
+      field = params.get_input<Field<ColorGeometry4f>>("Value_Color");
+      break;
+    case CD_PROP_BOOL:
+      field = params.get_input<Field<bool>>("Value_Bool");
+      break;
+    case CD_PROP_INT32:
+      field = params.get_input<Field<int>>("Value_Int");
+      break;
+    default:
+      break;
+  }
+
+  /* Run on the instances component separately to only affect the top level of instances. */
+  if (domain == ATTR_DOMAIN_INSTANCE) {
+    if (geometry_set.has_instances()) {
+      GeometryComponent &component = geometry_set.get_component_for_write(
+          GEO_COMPONENT_TYPE_INSTANCES);
+      try_capture_field_on_geometry(component, name, domain, field);
+    }
+  }
+  else {
+    geometry_set.modify_geometry_sets([&](GeometrySet &geometry_set) {
+      for (const GeometryComponentType type :
+           {GEO_COMPONENT_TYPE_MESH, GEO_COMPONENT_TYPE_POINT_CLOUD, GEO_COMPONENT_TYPE_CURVE}) {
+        if (geometry_set.has(type)) {
+          GeometryComponent &component = geometry_set.get_component_for_write(type);
+          try_capture_field_on_geometry(component, name, domain, field);
+        }
+      }
+    });
+  }
+
+  params.set_output("Geometry", std::move(geometry_set));
+}
+
+}  // namespace blender::nodes::node_geo_store_named_attribute_cc
+
+void register_node_type_geo_store_named_attribute()
+{
+  namespace file_ns = blender::nodes::node_geo_store_named_attribute_cc;
+  static bNodeType ntype;
+
+  geo_node_type_base(
+      &ntype, GEO_NODE_STORE_NAMED_ATTRIBUTE, "Store Named Attribute", NODE_CLASS_ATTRIBUTE);
+  node_type_storage(&ntype,
+                    "NodeGeometryStoreNamedAttribute",
+                    node_free_standard_storage,
+                    node_copy_standard_storage);
+  node_type_size(&ntype, 140, 100, 700);
+  node_type_init(&ntype, file_ns::node_init);
+  ntype.updatefunc = file_ns::node_update;
+  ntype.declare = file_ns::node_declare;
+  ntype.gather_link_search_ops = file_ns::node_gather_link_searches;
+  ntype.geometry_node_execute = file_ns::node_geo_exec;
+  ntype.draw_buttons = file_ns::node_layout;
+  nodeRegisterType(&ntype);
+}