Depsgraph: Implement 'ID_RECALC_GEOMETRY_DEFORM'

During a mesh transformation in edit mode (Move, Rotate...), only part of
the batch cache needs to be updated.

This commit allows only update only the drawn batches seen in
`BKE_object_data_eval_batch_cache_deform_tag` if the new
`ID_RECALC_GEOMETRY_DEFORM` flag is used.

This new flag is used in the transforms operation for edit-mesh and
results in 1.6x overall speedup in heavy subdiv cube.

Differential Revision: https://developer.blender.org/D11599

1 files changed, 20 insertions, 1 deletions

diff --git a/source/blender/blenkernel/intern/object_update.c b/source/blender/blenkernel/intern/object_update.c
index 7e15ac5de5d..7cdea14e9bd 100644
--- a/source/blender/blenkernel/intern/object_update.c
+++ b/source/blender/blenkernel/intern/object_update.c
@@ -388,12 +388,31 @@ void BKE_object_batch_cache_dirty_tag(Object *ob)
   BKE_object_data_batch_cache_dirty_tag(ob->data);
 }
 
+void BKE_object_data_eval_batch_cache_dirty_tag(Depsgraph *depsgraph, ID *object_data)
+{
+  DEG_debug_print_eval(depsgraph, __func__, object_data->name, object_data);
+  BKE_object_data_batch_cache_dirty_tag(object_data);
+}
+
+void BKE_object_data_eval_batch_cache_deform_tag(Depsgraph *depsgraph, ID *object_data)
+{
+  DEG_debug_print_eval(depsgraph, __func__, object_data->name, object_data);
+  switch (GS(object_data->name)) {
+    case ID_ME:
+      BKE_mesh_batch_cache_dirty_tag((Mesh *)object_data, BKE_MESH_BATCH_DIRTY_DEFORM);
+      break;
+    default:
+      /* Only mesh is currently supported. Fallback to dirty all for other datablocks types. */
+      BKE_object_data_batch_cache_dirty_tag(object_data);
+      break;
+  }
+}
+
 void BKE_object_eval_uber_data(Depsgraph *depsgraph, Scene *scene, Object *ob)
 {
   DEG_debug_print_eval(depsgraph, __func__, ob->id.name, ob);
   BLI_assert(ob->type != OB_ARMATURE);
   BKE_object_handle_data_update(depsgraph, scene, ob);
-  BKE_object_batch_cache_dirty_tag(ob);
 }
 
 void BKE_object_eval_ptcache_reset(Depsgraph *depsgraph, Scene *scene, Object *object)