Geometry Nodes: Accumulate Fields Node

This function node creates a running total of a given Vector, Float, or
Int field.

Inputs:
  - Value: The field to be accumulated
  - Group Index: The values of this input are used to aggregate the input
    into separate 'bins', creating multiple accumulations.
Outputs:
  - Leading and Trailing: Returns the running totals starting
   at either the first value of each accumulations or 0 respectively.
  - Total: Returns the total accumulation at all positions of the field.

There's currently plenty of duplicate work happening when multiple outputs
are used that could be optimized by a future refactor to field inputs.

Differential Revision: https://developer.blender.org/D12743

1 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/makesdna/DNA_node_types.h b/source/blender/makesdna/DNA_node_types.h
index 0d106c6b9eb..e349dfd8704 100644
--- a/source/blender/makesdna/DNA_node_types.h
+++ b/source/blender/makesdna/DNA_node_types.h
@@ -1264,6 +1264,13 @@ typedef struct NodeRandomValue {
   uint8_t data_type;
 } NodeRandomValue;
 
+typedef struct NodeAccumulateField {
+  /* CustomDataType. */
+  uint8_t data_type;
+  /* AttributeDomain. */
+  uint8_t domain;
+} NodeAccumulateField;
+
 typedef struct NodeAttributeRandomize {
   /* CustomDataType. */
   uint8_t data_type;