Commit: c205de020365eddbbc0f0cde0ad02dda91126807
Author: Bastien Montagne
Date:   Thu Jul 19 16:48:21 2018 +0200
Branches: blender2.8
https://developer.blender.org/rBc205de020365eddbbc0f0cde0ad02dda91126807

Fix T55973: [2.8] Crash when 'apply pose as rest pose' when bone scale is 0,0,0.

`BKE_pose_rebuild()` should (ideally) always trigger a rebuild of the
depsgraph, since it can add or remove posechannels.

This function now takes a Main parameter to ensure that related
depsgraphes are tagged as dirty (kept it optional, for some corner cases).

We should also probably double-check calls to that function, think in
theory it should only be called from depsgraph itself? But for now...

===================================================================

M       source/blender/blenkernel/BKE_armature.h
M       source/blender/blenkernel/BKE_object.h
M       source/blender/blenkernel/intern/armature.c
M       source/blender/blenkernel/intern/library.c
M       source/blender/blenkernel/intern/object.c
M       source/blender/blenkernel/intern/scene.c
M       source/blender/depsgraph/intern/builder/deg_builder_nodes_rig.cc
M       source/blender/draw/intern/draw_armature.c
M       source/blender/editors/armature/armature_utils.c
M       source/blender/editors/object/object_add.c
M       source/blender/editors/object/object_relations.c
M       source/blender/makesrna/intern/rna_object.c

===================================================================

diff --git a/source/blender/blenkernel/BKE_armature.h 
b/source/blender/blenkernel/BKE_armature.h
index e1bfb05fb59..21d880cf2a7 100644
--- a/source/blender/blenkernel/BKE_armature.h
+++ b/source/blender/blenkernel/BKE_armature.h
@@ -100,7 +100,7 @@ void BKE_armature_where_is(struct bArmature *arm);
 void BKE_armature_where_is_bone(struct Bone *bone, struct Bone *prevbone, 
const bool use_recursion);
 void BKE_pose_clear_pointers(struct bPose *pose);
 void BKE_pose_remap_bone_pointers(struct bArmature *armature, struct bPose 
*pose);
-void BKE_pose_rebuild(struct Object *ob, struct bArmature *arm);
+void BKE_pose_rebuild(struct Main *bmain, struct Object *ob, struct bArmature 
*arm);
 void BKE_pose_where_is(struct Depsgraph *depsgraph, struct Scene *scene, 
struct Object *ob);
 void BKE_pose_where_is_bone(struct Depsgraph *depsgraph, struct Scene *scene, 
struct Object *ob, struct bPoseChannel *pchan, float ctime, bool do_extra);
 void BKE_pose_where_is_bone_tail(struct bPoseChannel *pchan);
diff --git a/source/blender/blenkernel/BKE_object.h 
b/source/blender/blenkernel/BKE_object.h
index 0122185fd2a..79e4f1d448a 100644
--- a/source/blender/blenkernel/BKE_object.h
+++ b/source/blender/blenkernel/BKE_object.h
@@ -75,7 +75,7 @@ bool BKE_object_support_modifier_type_check(const struct 
Object *ob, int modifie
 void BKE_object_link_modifiers(struct Scene *scene, struct Object *ob_dst, 
const struct Object *ob_src);
 void BKE_object_free_modifiers(struct Object *ob, const int flag);
 
-void BKE_object_make_proxy(struct Object *ob, struct Object *target, struct 
Object *gob);
+void BKE_object_make_proxy(struct Main *bmain, struct Object *ob, struct 
Object *target, struct Object *gob);
 void BKE_object_copy_proxy_drivers(struct Object *ob, struct Object *target);
 
 bool BKE_object_exists_check(struct Main *bmain, const struct Object *obtest);
diff --git a/source/blender/blenkernel/intern/armature.c 
b/source/blender/blenkernel/intern/armature.c
index bd9ee7c9e5f..6be4574a62e 100644
--- a/source/blender/blenkernel/intern/armature.c
+++ b/source/blender/blenkernel/intern/armature.c
@@ -71,6 +71,8 @@
 #include "BKE_object.h"
 #include "BKE_scene.h"
 
+#include "DEG_depsgraph_build.h"
+
 #include "BIK_api.h"
 
 /* **************** Generic Functions, data level *************** */
@@ -1951,9 +1953,14 @@ void BKE_pose_remap_bone_pointers(bArmature *armature, 
bPose *pose)
        BLI_ghash_free(bone_hash, NULL, NULL);
 }
 
-/* only after leave editmode, duplicating, validating older files, library 
syncing */
-/* NOTE: pose->flag is set for it */
-void BKE_pose_rebuild(Object *ob, bArmature *arm)
+/**
+ * Only after leave editmode, duplicating, validating older files, library 
syncing.
+ *
+ * \note pose->flag is set for it.
+ *
+ * \param bmain May be NULL, only used to tag depsgraph as being dirty...
+ */
+void BKE_pose_rebuild(Main *bmain, Object *ob, bArmature *arm)
 {
        Bone *bone;
        bPose *pose;
@@ -1998,12 +2005,17 @@ void BKE_pose_rebuild(Object *ob, bArmature *arm)
                pose_proxy_synchronize(ob, ob->proxy, arm->layer_protected);
        }
 
-       BKE_pose_update_constraint_flags(ob->pose); /* for IK detection for 
example */
+       BKE_pose_update_constraint_flags(pose); /* for IK detection for example 
*/
+
+       pose->flag &= ~POSE_RECALC;
+       pose->flag |= POSE_WAS_REBUILT;
 
-       ob->pose->flag &= ~POSE_RECALC;
-       ob->pose->flag |= POSE_WAS_REBUILT;
+       BKE_pose_channels_hash_make(pose);
 
-       BKE_pose_channels_hash_make(ob->pose);
+       /* Rebuilding poses forces us to also rebuild the dependency graph, 
since there is one node per pose/bone... */
+       if (bmain != NULL) {
+               DEG_relations_tag_update(bmain);
+       }
 }
 
 /* ********************** THE POSE SOLVER ******************* */
@@ -2277,8 +2289,10 @@ void BKE_pose_where_is(struct Depsgraph *depsgraph, 
Scene *scene, Object *ob)
 
        if (ELEM(NULL, arm, scene))
                return;
-       if ((ob->pose == NULL) || (ob->pose->flag & POSE_RECALC))
-               BKE_pose_rebuild(ob, arm);
+       if ((ob->pose == NULL) || (ob->pose->flag & POSE_RECALC)) {
+               /* WARNING! passing NULL bmain here means we won't tag 
depsgraph's as dirty - hopefully this is OK. */
+               BKE_pose_rebuild(NULL, ob, arm);
+       }
 
        ctime = BKE_scene_frame_get(scene); /* not accurate... */
 
diff --git a/source/blender/blenkernel/intern/library.c 
b/source/blender/blenkernel/intern/library.c
index c2cdc8df1e6..351214ed72b 100644
--- a/source/blender/blenkernel/intern/library.c
+++ b/source/blender/blenkernel/intern/library.c
@@ -2464,7 +2464,7 @@ void BKE_library_make_local(
         * Try "make all local" in 04_01_H.lighting.blend from Agent327 without 
this, e.g. */
        for (Object *ob = bmain->object.first; ob; ob = ob->id.next) {
                if (ob->data != NULL && ob->type == OB_ARMATURE && ob->pose != 
NULL && ob->pose->flag & POSE_RECALC) {
-                       BKE_pose_rebuild(ob, ob->data);
+                       BKE_pose_rebuild(bmain, ob, ob->data);
                }
        }
 
diff --git a/source/blender/blenkernel/intern/object.c 
b/source/blender/blenkernel/intern/object.c
index 14794bd7061..33ea13c9a38 100644
--- a/source/blender/blenkernel/intern/object.c
+++ b/source/blender/blenkernel/intern/object.c
@@ -1150,7 +1150,7 @@ void BKE_object_transform_copy(Object *ob_tar, const 
Object *ob_src)
  *
  * \param flag  Copying options (see BKE_library.h's LIB_ID_COPY_... flags for 
more).
  */
-void BKE_object_copy_data(Main *UNUSED(bmain), Object *ob_dst, const Object 
*ob_src, const int flag)
+void BKE_object_copy_data(Main *bmain, Object *ob_dst, const Object *ob_src, 
const int flag)
 {
        ModifierData *md;
 
@@ -1180,7 +1180,7 @@ void BKE_object_copy_data(Main *UNUSED(bmain), Object 
*ob_dst, const Object *ob_
                copy_object_pose(ob_dst, ob_src, flag_subdata);
                /* backwards compat... non-armatures can get poses in older 
files? */
                if (ob_src->type == OB_ARMATURE)
-                       BKE_pose_rebuild(ob_dst, ob_dst->data);
+                       BKE_pose_rebuild(bmain, ob_dst, ob_dst->data);
        }
        defgroup_copy_list(&ob_dst->defbase, &ob_src->defbase);
        BKE_object_facemap_copy_list(&ob_dst->fmaps, &ob_src->fmaps);
@@ -1359,7 +1359,7 @@ void BKE_object_copy_proxy_drivers(Object *ob, Object 
*target)
 /*             local_object->proxy == pointer to library object, saved in 
files and read */
 /*             local_object->proxy_group == pointer to collection 
dupli-object, saved in files and read */
 
-void BKE_object_make_proxy(Object *ob, Object *target, Object *cob)
+void BKE_object_make_proxy(Main *bmain, Object *ob, Object *target, Object 
*cob)
 {
        /* paranoia checks */
        if (ID_IS_LINKED(ob) || !ID_IS_LINKED(target)) {
@@ -1434,7 +1434,7 @@ void BKE_object_make_proxy(Object *ob, Object *target, 
Object *cob)
        if (target->type == OB_ARMATURE) {
                copy_object_pose(ob, target, 0);   /* data copy, object 
pointers in constraints */
                BKE_pose_rest(ob->pose);            /* clear all transforms in 
channels */
-               BKE_pose_rebuild(ob, ob->data); /* set all internal links */
+               BKE_pose_rebuild(bmain, ob, ob->data); /* set all internal 
links */
 
                armature_set_id_extern(ob);
        }
@@ -2698,8 +2698,10 @@ void BKE_object_handle_update_ex(Depsgraph *depsgraph,
                         * with poses we do it ahead of 
BKE_object_where_is_calc to ensure animation
                         * is evaluated on the rebuilt pose, otherwise we get 
incorrect poses
                         * on file load */
-                       if (ob->pose == NULL || (ob->pose->flag & POSE_RECALC))
-                               BKE_pose_rebuild(ob, ob->data);
+                       if (ob->pose == NULL || (ob->pose->flag & POSE_RECALC)) 
{
+                               /* No need to pass bmain here, we assume we do 
not need to rebuild DEG from here... */
+                               BKE_pose_rebuild(NULL, ob, ob->data);
+                       }
                }
        }
        /* XXX new animsys warning: depsgraph tag OB_RECALC_DATA should not 
skip drivers,
diff --git a/source/blender/blenkernel/intern/scene.c 
b/source/blender/blenkernel/intern/scene.c
index f99a30b75d0..3650fa21c1c 100644
--- a/source/blender/blenkernel/intern/scene.c
+++ b/source/blender/blenkernel/intern/scene.c
@@ -1288,7 +1288,7 @@ static void scene_armature_depsgraph_workaround(Main 
*bmain, Depsgraph *depsgrap
        for (ob = bmain->object.first; ob; ob = ob->id.next) {
                if (ob->type == OB_ARMATURE && ob->adt && ob->adt->recalc & 
ADT_RECALC_ANIM) {
                        if (ob->pose == NULL || (ob->pose->flag & POSE_RECALC)) 
{
-                               BKE_pose_rebuild(ob, ob->data);
+                               BKE_pose_rebuild(bmain, ob, ob->data);
                        }
                }
        }
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_nodes_rig.cc 
b/source/blender/depsgraph/intern/builder/deg_builder_nodes_rig.cc
index 00d7a5da455..043148a0f70 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_nodes_rig.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_nodes_rig.cc
@@ -161,7 +161,8 @@ void DepsgraphNodeBuilder::build_rig(Object *object)
        build_armature(armature);
        /* Rebuild pose if not up to date. */
        if (object->pose == NULL || (object->pose->flag & POSE_RECALC)) {
-               BKE_pose_rebuild(object, armature);
+               /* By definition, no need to tag depsgraph as dirty from here, 
so we can pass NULL bmain. */
+               BKE_pose_rebuild(NULL, object, armature);
                /* XXX: Without this animation gets lost in certain 
circumstances
                 * after loading file. Need to investigate further since it does
                 * not happen with simple scenes..
diff --git a/source/blender/draw/intern/draw_armature.c 
b/source/blender/draw/intern/draw_armature.c
index b49ca4d0d00..8b90d328541 100644
--- a/source/blender/draw/intern/draw_armature.c
+++ b/source/blender/draw/intern/draw_armature.c
@@ -1623,7 +1623,7 @@ static void draw_armature_pose(Object *ob, const float 
const_color[4])
 
        /* We can't safely draw non-updated pose, might contain NULL bone 
pointers... */
        if (ob->pose->flag & POSE_RECALC) {
-               BKE_pose_rebuild(ob, arm);
+               BKE_pose_rebuild(NULL, ob, arm);
        }
 
        // if (!(base->flag & OB_FROMDUPLI)) // TODO
diff --git a/source/blender/editors/armature/armature_utils.c 
b/source/blender/editors/armature/armature_utils.c
index 02d45a4e041..c93bfb5d8c3 100644
--- a/source/blender/editors/armature/armature_utils.c
+++ b/source/blender/editors/armature/armature_utils.c
@@ -681,7 +681,7 @@ void ED_armature_from_edit(Main *bmain, bArmature *arm)
        /* so all users of this armature should get rebuilt */
        for (obt = bmain->object.first; obt; obt = obt->id.next) {
                if (obt->data == arm) {
-                       BKE_pose_rebuild(obt, arm);
+                       BKE_pose_rebuild(bmain, obt, arm);
                }
        

@@ Diff output truncated at 10240 characters. @@

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