ikSPline error with new depsgraph #45903

New Issue

boris cohen · 2015-08-25T14:38:26+02:00

boris cohen commented

2015-08-25 14:38:26 +02:00

System Information
Mint 17
CG:GTX 560Ti

Blender Version
Broken: 2.75a Official, hash: c27589e
Worked: Never, should work with new depsgraph :)

Short description of error

There is still fake dependency cycle with ikspline.
Let's take 2 sets of bones A and B, with no relation beetween each other (except they live in the same armature)

Set A (4 parented bones) are ikSpline constrained on a curve
Set B (2 bones with no parent/ no constraint) hooked 2 points of the curve (with hooked modifier on curve)

When mooving set B bones, Set A bones are jumping all over the place and a cycle is detected in consol even if there is no direct relation beetween them (except the armature object)

Exact steps for others to reproduce the error

Open blender 2.75a or later with --enable-new-depsgraph argument
open attached .blend file
move set B bones (called hook1 and hook2)

depsgraph_ikspline.blend

Thanks a lot !

**System Information** Mint 17 CG:GTX 560Ti **Blender Version** Broken: 2.75a Official, hash: c27589e Worked: Never, should work with new depsgraph :) **Short description of error** There is still fake dependency cycle with ikspline. Let's take 2 sets of bones A and B, with no relation beetween each other (except they live in the same armature) - Set A (4 parented bones) are ikSpline constrained on a curve - Set B (2 bones with no parent/ no constraint) hooked 2 points of the curve (with hooked modifier on curve) When mooving set B bones, Set A bones are jumping all over the place and a cycle is detected in consol even if there is no direct relation beetween them (except the armature object) **Exact steps for others to reproduce the error** - Open blender 2.75a or later with --enable-new-depsgraph argument - open attached .blend file - move set B bones (called hook1 and hook2) [depsgraph_ikspline.blend](https://archive.blender.org/developer/F227780/depsgraph_ikspline.blend) Thanks a lot !

boris cohen commented

2015-08-25 14:38:26 +02:00

Changed status to: 'Open'

boris cohen commented

2015-08-25 14:38:26 +02:00

Added subscriber: @bobizib

boris cohen commented

2015-08-25 14:50:21 +02:00

Forgot to assign to depsgraph project

Joshua Leung commented

2015-08-25 14:51:58 +02:00

Added subscriber: @JoshuaLeung

Joshua Leung commented

2015-08-25 14:51:58 +02:00

Console Output

Dependency cycle detected:

'Armature[Object].POSE_INIT()' depends on 'BezierCurve[Object].GEOMETRY_UBEREVAL()' through '[Curve.Path -> Spline IK] DepsRel'
'BezierCurve[Object].GEOMETRY_UBEREVAL()' depends on 'BezierCurve[Object].GEOMETRY_MODIFIER(Hook-Armature.001)' through 'Object Geometry UberEval'
'BezierCurve[Object].GEOMETRY_MODIFIER(Hook-Armature.001)' depends on 'Armature[Object].Bone.005.BONE_DONE()' through 'Hook Modifier'
'Armature[Object].Bone.005.BONE_DONE()' depends on 'Armature[Object].Bone.005.BONE_READY()' through 'Ready -> Done'
'Armature[Object].Bone.005.BONE_READY()' depends on 'Armature[Object].Bone.005.BONE_POSE_PARENT()' through 'Pose -> Ready'
'Armature[Object].Bone.005.BONE_POSE_PARENT()' depends on 'Armature[Object].Bone.005.BONE_LOCAL()' through 'Bone Local - PoseSpace Link'
'Armature[Object].Bone.005.BONE_LOCAL()' depends on 'Armature[Object].POSE_INIT()' through 'PoseEval Source-Bone Link'

## Console Output Dependency cycle detected: ``` 'Armature[Object].POSE_INIT()' depends on 'BezierCurve[Object].GEOMETRY_UBEREVAL()' through '[Curve.Path -> Spline IK] DepsRel' 'BezierCurve[Object].GEOMETRY_UBEREVAL()' depends on 'BezierCurve[Object].GEOMETRY_MODIFIER(Hook-Armature.001)' through 'Object Geometry UberEval' 'BezierCurve[Object].GEOMETRY_MODIFIER(Hook-Armature.001)' depends on 'Armature[Object].Bone.005.BONE_DONE()' through 'Hook Modifier' 'Armature[Object].Bone.005.BONE_DONE()' depends on 'Armature[Object].Bone.005.BONE_READY()' through 'Ready -> Done' 'Armature[Object].Bone.005.BONE_READY()' depends on 'Armature[Object].Bone.005.BONE_POSE_PARENT()' through 'Pose -> Ready' 'Armature[Object].Bone.005.BONE_POSE_PARENT()' depends on 'Armature[Object].Bone.005.BONE_LOCAL()' through 'Bone Local - PoseSpace Link' 'Armature[Object].Bone.005.BONE_LOCAL()' depends on 'Armature[Object].POSE_INIT()' through 'PoseEval Source-Bone Link'

Joshua Leung commented

2015-08-25 15:07:06 +02:00

After mapping out these relationships, it looks like there is indeed a cycle still present, because the geometry evaluation hasn't been fully split up yet. Specifically:

Red lines indicate some of the main culprits of this problem

After mapping out these relationships, it looks like there is indeed a cycle still present, because the geometry evaluation hasn't been fully split up yet. Specifically: ![t45903.png](https://archive.blender.org/developer/F227783/t45903.png) Red lines indicate some of the main culprits of this problem

Sergey Sharybin commented

2015-08-25 15:41:08 +02:00

Added subscriber: @Sergey

Sergey Sharybin commented

2015-08-25 15:41:08 +02:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2015-08-25 15:41:08 +02:00

Sergey Sharybin self-assigned this 2015-08-25 15:41:08 +02:00

Sergey Sharybin commented

2015-08-25 15:41:08 +02:00

Improving cycle solver in new dependency graph is still a todo. So thanks for the report, but closing it now.

P.S. Your setup wouldn't work reliably in old dependency graph either.

Improving cycle solver in new dependency graph is still a todo. So thanks for the report, but closing it now. P.S. Your setup wouldn't work reliably in old dependency graph either.

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ikSPline error with new depsgraph #45903

Console Output