Geometry Nodes: Add operation setting to attribute randomize node

This commit adds a drop-down to the attribute randomize node to support
a few operations on the values of existing attributes: "Replace/Create"
(the existing behavior), "Add", "Subtract", and "Multiply".
At this point, the operations are limited by what is simple to implement.
More could be added in the future, but there isn't a strong use case
for more complex operations anyway, and a second math node can be used.

Differential Revision: https://developer.blender.org/D10269

1 files changed, 19 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/versioning_290.c b/source/blender/blenloader/intern/versioning_290.c
index 78d60715aa5..74b3827ffd0 100644
--- a/source/blender/blenloader/intern/versioning_290.c
+++ b/source/blender/blenloader/intern/versioning_290.c
@@ -1704,6 +1704,25 @@ void blo_do_versions_290(FileData *fd, Library *UNUSED(lib), Main *bmain)
     }
     FOREACH_NODETREE_END;
   }
+
+  if (!MAIN_VERSION_ATLEAST(bmain, 293, 8)) {
+    FOREACH_NODETREE_BEGIN (bmain, ntree, id) {
+      if (ntree->type != NTREE_GEOMETRY) {
+        continue;
+      }
+      LISTBASE_FOREACH (bNode *, node, &ntree->nodes) {
+        if (node->type == GEO_NODE_POINT_INSTANCE && node->storage == NULL) {
+          NodeAttributeRandomize *data = (NodeAttributeRandomize *)MEM_callocN(
+              sizeof(NodeAttributeRandomize), __func__);
+          data->data_type = node->custom1;
+          data->operation = GEO_NODE_ATTRIBUTE_RANDOMIZE_REPLACE_CREATE;
+          node->storage = data;
+        }
+      }
+    }
+    FOREACH_NODETREE_END;
+  }
+
   /**
    * Versioning code until next subversion bump goes here.
    *