From bb7b1cc884819d2a681f1c93b6bb9c015248aff0 Mon Sep 17 00:00:00 2001
From: Sergey Sharybin <sergey.vfx@gmail.com>
Date: Tue, 31 Jul 2018 13:23:01 +0200
Subject: Fix T56170: Fake dependency cycle in new depsgraph + interleaved
 armature update + proxy

Make proxy copy result more atomic operation.
---
 source/blender/blenkernel/intern/armature_update.c | 65 +++++++++++++++++-----
 1 file changed, 52 insertions(+), 13 deletions(-)

(limited to 'source/blender/blenkernel/intern/armature_update.c')

diff --git a/source/blender/blenkernel/intern/armature_update.c b/source/blender/blenkernel/intern/armature_update.c
index 03d370f6e7c..d53c61255fe 100644
--- a/source/blender/blenkernel/intern/armature_update.c
+++ b/source/blender/blenkernel/intern/armature_update.c
@@ -558,6 +558,17 @@ void BKE_splineik_execute_tree(
 
 /* *************** Depsgraph evaluation callbacks ************ */
 
+static void pose_pchan_index_create(bPose *pose)
+{
+	const int num_channels = BLI_listbase_count(&pose->chanbase);
+	pose->chan_array = MEM_malloc_arrayN(
+	        num_channels, sizeof(bPoseChannel *), "pose->chan_array");
+	int pchan_index = 0;
+	for (bPoseChannel *pchan = pose->chanbase.first; pchan != NULL; pchan = pchan->next) {
+		pose->chan_array[pchan_index++] = pchan;
+	}
+}
+
 BLI_INLINE bPoseChannel *pose_pchan_get_indexed(Object *ob, int pchan_index)
 {
 	bPose *pose = ob->pose;
@@ -585,16 +596,12 @@ void BKE_pose_eval_init(struct Depsgraph *depsgraph,
 	/* imat is needed for solvers. */
 	invert_m4_m4(ob->imat, ob->obmat);
 
-	const int num_channels = BLI_listbase_count(&pose->chanbase);
-	pose->chan_array = MEM_malloc_arrayN(
-	        num_channels, sizeof(bPoseChannel *), "pose->chan_array");
-
 	/* clear flags */
-	int pchan_index = 0;
 	for (bPoseChannel *pchan = pose->chanbase.first; pchan != NULL; pchan = pchan->next) {
 		pchan->flag &= ~(POSE_DONE | POSE_CHAIN | POSE_IKTREE | POSE_IKSPLINE);
-		pose->chan_array[pchan_index++] = pchan;
 	}
+
+	pose_pchan_index_create(pose);
 }
 
 void BKE_pose_eval_init_ik(struct Depsgraph *depsgraph,
@@ -752,12 +759,44 @@ void BKE_pose_eval_flush(struct Depsgraph *depsgraph,
 	pose->chan_array = NULL;
 }
 
-void BKE_pose_eval_proxy_copy(struct Depsgraph *depsgraph, Object *ob)
+void BKE_pose_eval_proxy_pose_init(struct Depsgraph *depsgraph, Object *object)
 {
-	BLI_assert(ID_IS_LINKED(ob) && ob->proxy_from != NULL);
-	DEG_debug_print_eval(depsgraph, __func__, ob->id.name, ob);
-	if (BKE_pose_copy_result(ob->pose, ob->proxy_from->pose) == false) {
-		printf("Proxy copy error, lib Object: %s proxy Object: %s\n",
-		       ob->id.name + 2, ob->proxy_from->id.name + 2);
-	}
+	BLI_assert(ID_IS_LINKED(object) && object->proxy_from != NULL);
+	DEG_debug_print_eval(depsgraph, __func__, object->id.name, object);
+
+	pose_pchan_index_create(object->pose);
+}
+
+void BKE_pose_eval_proxy_pose_done(struct Depsgraph *depsgraph, Object *object)
+{
+	BLI_assert(ID_IS_LINKED(object) && object->proxy_from != NULL);
+	DEG_debug_print_eval(depsgraph, __func__, object->id.name, object);
+
+	bPose *pose = object->pose;
+	BLI_assert(pose->chan_array != NULL);
+	MEM_freeN(pose->chan_array);
+	pose->chan_array = NULL;
+}
+
+void BKE_pose_eval_proxy_copy_bone(
+        struct Depsgraph *depsgraph,
+        Object *object,
+        int pchan_index)
+{
+	BLI_assert(ID_IS_LINKED(object) && object->proxy_from != NULL);
+	DEG_debug_print_eval(depsgraph, __func__, object->id.name, object);
+	bPoseChannel *pchan = pose_pchan_get_indexed(object, pchan_index);
+	/* TODO(sergey): Use indexec lookup, once it's guaranteed to be kept
+	 * around for the time while proxies are evaluating.
+	 */
+#if 0
+	bPoseChannel *pchan_from = pose_pchan_get_indexed(
+	        object->proxy_from, pchan_index);
+#else
+	bPoseChannel *pchan_from = BKE_pose_channel_find_name(
+	        object->proxy_from->pose, pchan->name);
+#endif
+	BLI_assert(pchan != NULL);
+	BLI_assert(pchan_from != NULL);
+	BKE_pose_copyesult_pchan_result(pchan, pchan_from);
 }
-- 
cgit v1.2.3