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

1 files changed, 12 insertions, 0 deletions

diff --git a/source/blender/makesdna/DNA_node_types.h b/source/blender/makesdna/DNA_node_types.h
index 18b79a6fc25..5bd44868741 100644
--- a/source/blender/makesdna/DNA_node_types.h
+++ b/source/blender/makesdna/DNA_node_types.h
@@ -1592,6 +1592,18 @@ typedef struct NodeGeometryAttributeCapture {
   int8_t domain;
 } NodeGeometryAttributeCapture;
 
+typedef struct NodeGeometryStoreNamedAttribute {
+  /* CustomDataType. */
+  int8_t data_type;
+  /* AttributeDomain. */
+  int8_t domain;
+} NodeGeometryStoreNamedAttribute;
+
+typedef struct NodeGeometryInputNamedAttribute {
+  /* CustomDataType. */
+  int8_t data_type;
+} NodeGeometryInputNamedAttribute;
+
 typedef struct NodeGeometryStringToCurves {
   /* GeometryNodeStringToCurvesOverflowMode */
   uint8_t overflow;