diff options
author | Bastien Montagne <bastien@blender.org> | 2020-10-27 13:34:37 +0300 |
---|---|---|
committer | Bastien Montagne <bastien@blender.org> | 2020-10-27 17:27:07 +0300 |
commit | 90e12e823ff0b1940e8ca8131191914a3a2be007 (patch) | |
tree | 1b994cfd059b89a8d42e65a214bc860c269a3859 /source/blender | |
parent | f6990c235ab9cfc8750d412e931f6f03cd28177d (diff) |
Fix T81854: crash when undoing switch between sculpt and edit mode.
The logic of `BKE_sculpt_update_object_for_edit` was not correct. such
low-level functions should typically never preform depsgraph evaluation
themselves, they should be able to rely on getting a fully evaluated
depsgraph and just get needed data from there.
Supporting that required fixing other broken code higher in the
callstack, namely:
* `ED_object_sculptmode_enter_ex` was freeing evaluated data, for no
valid reason it would seem.
* `sculpt_undosys_step_decode` was ensuring an evaluated depsgraph
**before** calling `ED_object_mode_generic_exit`, which would
invalidate a lot of evaluated data.
Note that it is fairly difficult to track down all code paths leading to
`BKE_sculpt_update_object_for_edit`, so there may be still cases where
this gets called with improperly evaluated depsgraph.
Reviewed By: sergey
Maniphest Tasks: T81854
Differential Revision: https://developer.blender.org/D9270
Diffstat (limited to 'source/blender')
-rw-r--r-- | source/blender/blenkernel/intern/paint.c | 11 | ||||
-rw-r--r-- | source/blender/editors/sculpt_paint/sculpt.c | 6 | ||||
-rw-r--r-- | source/blender/editors/sculpt_paint/sculpt_undo.c | 8 |
3 files changed, 13 insertions, 12 deletions
diff --git a/source/blender/blenkernel/intern/paint.c b/source/blender/blenkernel/intern/paint.c index 42749a93988..e46c91e4bf4 100644 --- a/source/blender/blenkernel/intern/paint.c +++ b/source/blender/blenkernel/intern/paint.c @@ -1734,17 +1734,16 @@ void BKE_sculpt_color_layer_create_if_needed(struct Object *object) DEG_id_tag_update(&orig_me->id, ID_RECALC_GEOMETRY); } +/** \warning Expects a fully evaluated depsgraph. */ void BKE_sculpt_update_object_for_edit( Depsgraph *depsgraph, Object *ob_orig, bool need_pmap, bool need_mask, bool need_colors) { - /* Update from sculpt operators and undo, to update sculpt session - * and PBVH after edits. */ - Scene *scene_eval = DEG_get_evaluated_scene(depsgraph); - Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob_orig); - Mesh *me_eval = mesh_get_eval_final(depsgraph, scene_eval, ob_eval, &CD_MASK_BAREMESH); - BLI_assert(ob_orig == DEG_get_original_object(ob_orig)); + Object *ob_eval = DEG_get_evaluated_object(depsgraph, ob_orig); + Mesh *me_eval = BKE_object_get_evaluated_mesh(ob_eval); + BLI_assert(me_eval != NULL); + sculpt_update_object(depsgraph, ob_orig, me_eval, need_pmap, need_mask, need_colors); } diff --git a/source/blender/editors/sculpt_paint/sculpt.c b/source/blender/editors/sculpt_paint/sculpt.c index bd381a7b60c..fafa87e910c 100644 --- a/source/blender/editors/sculpt_paint/sculpt.c +++ b/source/blender/editors/sculpt_paint/sculpt.c @@ -8133,6 +8133,7 @@ static void SCULPT_OT_symmetrize(wmOperatorType *ot) /**** Toggle operator for turning sculpt mode on or off ****/ +/** \warning Expects a fully evaluated depsgraph. */ static void sculpt_init_session(Depsgraph *depsgraph, Scene *scene, Object *ob) { /* Create persistent sculpt mode data. */ @@ -8197,6 +8198,7 @@ void ED_object_sculptmode_enter_ex(Main *bmain, if (flush_recalc) { DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY); + BKE_scene_graph_evaluated_ensure(depsgraph, bmain); } /* Create sculpt mode session data. */ @@ -8204,10 +8206,6 @@ void ED_object_sculptmode_enter_ex(Main *bmain, BKE_sculptsession_free(ob); } - /* Make sure derived final from original object does not reference possibly - * freed memory. */ - BKE_object_free_derived_caches(ob); - /* Copy the current mesh visibility to the Face Sets. */ BKE_sculpt_face_sets_ensure_from_base_mesh_visibility(me); diff --git a/source/blender/editors/sculpt_paint/sculpt_undo.c b/source/blender/editors/sculpt_paint/sculpt_undo.c index f1410ffad1b..f4f30c903aa 100644 --- a/source/blender/editors/sculpt_paint/sculpt_undo.c +++ b/source/blender/editors/sculpt_paint/sculpt_undo.c @@ -1477,8 +1477,6 @@ static void sculpt_undosys_step_decode( { Scene *scene = CTX_data_scene(C); ViewLayer *view_layer = CTX_data_view_layer(C); - /* Sculpt needs evaluated state. */ - BKE_scene_view_layer_graph_evaluated_ensure(bmain, scene, view_layer); Object *ob = OBACT(view_layer); if (ob && (ob->type == OB_MESH)) { if (ob->mode & OB_MODE_SCULPT) { @@ -1486,6 +1484,12 @@ static void sculpt_undosys_step_decode( } else { ED_object_mode_generic_exit(bmain, depsgraph, scene, ob); + + /* Sculpt needs evaluated state. + * Note: needs to be done here, as #ED_object_mode_generic_exit will usually invalidate + * (some) evaluated data. */ + BKE_scene_graph_evaluated_ensure(depsgraph, bmain); + Mesh *me = ob->data; /* Don't add sculpt topology undo steps when reading back undo state. * The undo steps must enter/exit for us. */ |