Fix T73254: Drivers with the object.dimension variable are not updated

This fixes an issue where drivers using `object.dimension` only add a dependency on `GEOMETRY` to the depsgraph, whereas they should also depend on `TRANSFORM`.

This patch adds a new no-op operation that depends on the geometry and transform components to the Parameters component.

An alternative implementation would be to have `RNANodeQuery::construct_node_identifier` return multiple node identifiers. However, this would spread throughout the depsgraph code and unnecessarily force many other functions to either return or handle multiple nodes where in 99.999% of the time a single node would suffice.

The new `DIMENSIONS` node is added for each object. An upcoming patch will go over all no-op operation nodes and remove them from the depsgraph. Since this is a more dangerous operation, it'll be reviewed separately.

Differential Revision: https://developer.blender.org/D7031

1 files changed, 2 insertions, 1 deletions

diff --git a/source/blender/depsgraph/intern/builder/deg_builder_rna.cc b/source/blender/depsgraph/intern/builder/deg_builder_rna.cc
index 7fb92e77adf..6ae2e4ce696 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_rna.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_rna.cc
@@ -318,7 +318,8 @@ RNANodeIdentifier RNANodeQuery::construct_node_identifier(const PointerRNA *ptr,
         return node_identifier;
       }
       else if (STREQ(prop_identifier, "dimensions")) {
-        node_identifier.type = NodeType::GEOMETRY;
+        node_identifier.type = NodeType::PARAMETERS;
+        node_identifier.operation_code = OperationCode::DIMENSIONS;
         return node_identifier;
       }
     }