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, 6 insertions, 3 deletions

diff --git a/source/blender/makesdna/DNA_ID.h b/source/blender/makesdna/DNA_ID.h
index c9d652ad03d..43969bf0768 100644
--- a/source/blender/makesdna/DNA_ID.h
+++ b/source/blender/makesdna/DNA_ID.h
@@ -621,9 +621,9 @@ typedef enum IDRecalcFlag {
    * When a collection gets tagged with this flag, all objects depending on the geometry and
    * transforms on any of the objects in the collection are updated. */
   ID_RECALC_GEOMETRY = (1 << 1),
-
-  /* ** Animation or time changed and animation is to be re-evaluated. ** */
-  ID_RECALC_ANIMATION = (1 << 2),
+  /* Same as #ID_RECALC_GEOMETRY, but instead of tagging the batch cache as `dirty_all`, just tags
+     what matches the deform cache. */
+  ID_RECALC_GEOMETRY_DEFORM = (1 << 2),
 
   /* ** Particle system changed. ** */
   /* Only do pathcache etc. */
@@ -683,6 +683,9 @@ typedef enum IDRecalcFlag {
    * have to be copied on every update. */
   ID_RECALC_PARAMETERS = (1 << 21),
 
+  /* ** Animation or time changed and animation is to be re-evaluated. ** */
+  ID_RECALC_ANIMATION = (1 << 22),
+
   /* Input has changed and datablock is to be reload from disk.
    * Applies to movie clips to inform that copy-on-written version is to be refreshed for the new
    * input file or for color space changes. */