Fix T52835: When driven IK influence change, ik animation have 1 frame delay

2 files changed, 16 insertions, 2 deletions

diff --git a/source/blender/blenkernel/BKE_armature.h b/source/blender/blenkernel/BKE_armature.h
index 6bfc8c918d6..3bf3fd2512f 100644
--- a/source/blender/blenkernel/BKE_armature.h
+++ b/source/blender/blenkernel/BKE_armature.h
@@ -171,6 +171,11 @@ void BKE_pose_eval_init(struct EvaluationContext *eval_ctx,
                         struct Object *ob,
                         struct bPose *pose);
 
+void BKE_pose_eval_init_ik(struct EvaluationContext *eval_ctx,
+                           struct Scene *scene,
+                           struct Object *ob,
+                           struct bPose *pose);
+
 void BKE_pose_eval_bone(struct EvaluationContext *eval_ctx,
                         struct Scene *scene,
                         struct Object *ob,
diff --git a/source/blender/blenkernel/intern/armature_update.c b/source/blender/blenkernel/intern/armature_update.c
index a4714041edf..45d1d36aeca 100644
--- a/source/blender/blenkernel/intern/armature_update.c
+++ b/source/blender/blenkernel/intern/armature_update.c
@@ -559,11 +559,10 @@ void BKE_splineik_execute_tree(Scene *scene, Object *ob, bPoseChannel *pchan_roo
 /* *************** Depsgraph evaluation callbacks ************ */
 
 void BKE_pose_eval_init(EvaluationContext *UNUSED(eval_ctx),
-                        Scene *scene,
+                        Scene *UNUSED(scene),
                         Object *ob,
                         bPose *pose)
 {
-	float ctime = BKE_scene_frame_get(scene); /* not accurate... */
 	bPoseChannel *pchan;
 
 	DEBUG_PRINT("%s on %s\n", __func__, ob->id.name);
@@ -581,6 +580,16 @@ void BKE_pose_eval_init(EvaluationContext *UNUSED(eval_ctx),
 	for (pchan = pose->chanbase.first; pchan != NULL; pchan = pchan->next) {
 		pchan->flag &= ~(POSE_DONE | POSE_CHAIN | POSE_IKTREE | POSE_IKSPLINE);
 	}
+}
+
+void BKE_pose_eval_init_ik(EvaluationContext *UNUSED(eval_ctx),
+                           Scene *scene,
+                           Object *ob,
+                           bPose *UNUSED(pose))
+{
+	float ctime = BKE_scene_frame_get(scene); /* not accurate... */
+
+	DEBUG_PRINT("%s on %s\n", __func__, ob->id.name);
 
 	/* 2a. construct the IK tree (standard IK) */
 	BIK_initialize_tree(scene, ob, ctime);