Mesh: don't compute CD_ORCO layer when there are no deforming modifiers

This saves memory and evaluation time for simple static meshes with e.g. a
subdivision surface modifier. If no CD_ORCO layer exists then we assume the
actual vertex coordinates are equal to the original undeformed coordinates.

1 files changed, 5 insertions, 5 deletions

diff --git a/source/blender/blenkernel/BKE_modifier.h b/source/blender/blenkernel/BKE_modifier.h
index 0909e73777a..30a366805b6 100644
--- a/source/blender/blenkernel/BKE_modifier.h
+++ b/source/blender/blenkernel/BKE_modifier.h
@@ -391,15 +391,15 @@ typedef struct CDMaskLink {
   struct CustomData_MeshMasks mask;
 } CDMaskLink;
 
-/* Calculates and returns a linked list of CustomData_MeshMasks indicating the
- * data required by each modifier in the stack pointed to by md for correct
- * evaluation, assuming the data indicated by dataMask is required at the
- * end of the stack.
+/* Calculates and returns a linked list of CustomData_MeshMasks and modified
+ * final datamask, indicating the data required by each modifier in the stack
+ * pointed to by md for correct evaluation, assuming the data indicated by
+ * final_datamask is required at the end of the stack.
  */
 struct CDMaskLink *modifiers_calcDataMasks(struct Scene *scene,
                                            struct Object *ob,
                                            struct ModifierData *md,
-                                           const struct CustomData_MeshMasks *dataMask,
+                                           struct CustomData_MeshMasks *final_datamask,
                                            int required_mode,
                                            ModifierData *previewmd,
                                            const struct CustomData_MeshMasks *previewmask);