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GPv3: Assert in keyframe drawing code with GPv2 demo file #124585

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opened 2024-07-12 11:42:16 +02:00 by Lukas Tönne · 5 comments
Lukas Tönne commented 2024-07-12 11:42:16 +02:00
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System Information
Operating system:
Graphics card:

Blender Version
Broken: 4.3 main
Worked:

Short description of error
Assert fails in keyframe drawing code when loading the (Cutout-Rig) Boy Head Test demo file.

Exact steps for others to reproduce the error

  1. Download and open the (Cutout-Rig) Boy Head Test file.

Callstack: callstack.txt

**System Information** Operating system: Graphics card: **Blender Version** Broken: 4.3 main Worked: **Short description of error** Assert fails in keyframe drawing code when loading the [(Cutout-Rig) Boy Head Test](https://cloud.blender.org/p/gallery/5d9c6fbd2ed9a72b3fae65b0) demo file. **Exact steps for others to reproduce the error** 1. Download and open the [(Cutout-Rig) Boy Head Test](https://cloud.blender.org/p/gallery/5d9c6fbd2ed9a72b3fae65b0) file. Callstack: [callstack.txt](/attachments/f22216e0-3817-4545-9e17-dee886b86a97)
callstack.txt
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Lukas Tönne added the
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Lukas Tönne added this to the Grease Pencil project 2024-07-12 11:42:17 +02:00
Lukas Tönne commented 2024-07-12 11:44:01 +02:00
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Also has some errors from depsgraph cycles, not sure if related:

ERROR (bke.fcurve): source/blender/blenkernel/intern/fcurve_driver.cc:188 dtar_get_prop_val: driver has an invalid target to use (path = location[0])
WARN (bke.anim_sys): source/blender/blenkernel/intern/anim_sys.cc:360 BKE_animsys_rna_path_resolve: Animato: Invalid path. ID = 'Simplify Controller',  'modifiers["Subdivision"].levels[0]'
WARN (bke.anim_sys): source/blender/blenkernel/intern/anim_sys.cc:4229 BKE_animsys_eval_driver: invalid driver - modifiers["Subdivision"].levels[0]
Also has some errors from depsgraph cycles, not sure if related: ``` ERROR (bke.fcurve): source/blender/blenkernel/intern/fcurve_driver.cc:188 dtar_get_prop_val: driver has an invalid target to use (path = location[0]) WARN (bke.anim_sys): source/blender/blenkernel/intern/anim_sys.cc:360 BKE_animsys_rna_path_resolve: Animato: Invalid path. ID = 'Simplify Controller', 'modifiers["Subdivision"].levels[0]' WARN (bke.anim_sys): source/blender/blenkernel/intern/anim_sys.cc:4229 BKE_animsys_eval_driver: invalid driver - modifiers["Subdivision"].levels[0] ```
Pratik Borhade commented 2024-07-12 12:26:57 +02:00
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Yes, can confirm the assert

Yes, can confirm the assert
Falk David commented 2024-07-25 15:52:21 +02:00
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Caused by f3b393a74a.
@ChrisLend could you take a look?

Caused by https://projects.blender.org/blender/blender/commit/f3b393a74ac26898f491acd9953dcd331928eda4. @ChrisLend could you take a look?
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Falk David commented 2024-07-25 15:59:18 +02:00
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I looked into this for a bit and here is what I can make out:

  • We're in channel_list_build_keylists and it's called with a range of (-5.125, 46.125).
  • Going into summary_to_keylist then fcurve_to_keylist.
  • Before f3b393a74a update_keyblocks was called with the BezTriple at the start index with the number of indices in the range.
  • After f3b393a74a it's called on the whole fcurve.
  • In add_bezt_to_keyblocks_list the assert is hit because we ran out of columns in keylist->key_columns and all of them are < 52 (where the bezt[1].vec[1][0] is).
I looked into this for a bit and here is what I can make out: * We're in `channel_list_build_keylists` and it's called with a `range` of `(-5.125, 46.125)`. * Going into `summary_to_keylist` then `fcurve_to_keylist`. * Before https://projects.blender.org/blender/blender/commit/f3b393a74ac26898f491acd9953dcd331928eda4 `update_keyblocks` was called with the `BezTriple` at the start index with the number of indices in the range. * After https://projects.blender.org/blender/blender/commit/f3b393a74ac26898f491acd9953dcd331928eda4 it's called on the whole fcurve. * In `add_bezt_to_keyblocks_list` the assert is hit because we ran out of columns in `keylist->key_columns` and all of them are `< 52` (where the `bezt[1].vec[1][0]` is).
Christoph Lendenfeld commented 2024-07-25 17:56:08 +02:00
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I think the only real solution is to make sure that transforming keys in the dopesheet sorts them during transform just like it does in the Graph Editor.
Will work on a patch for that

I think the only real solution is to make sure that transforming keys in the dopesheet sorts them during transform just like it does in the Graph Editor. Will work on a patch for that
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Reference: blender/blender#124585
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