Rigged and latticed grease pencil, linked and 'static overrided'. Odd lattice behaviour #75786

New Issue

Leonard Siebeneicher · 2020-04-16T14:36:06+02:00

2020-04-16 14:36:06 +02:00

System Information
Operating system: Linux-4.15.0-96-lowlatency-x86_64-with-debian-buster-sid 64 Bits
Graphics card: Mesa DRI Intel(R) HD Graphics 510 (Skylake GT1) Intel Open Source Technology Center 4.5 (Core Profile) Mesa 19.2.8

Blender Version
Broken: version: 2.83 (sub 13), branch: master, commit date: 2020-04-15 21:34, hash: f0221ff667

Short description of error
Rigged and latticed grease pencil drawing works flawlessly in original file.
If linked in another file, and library override is used to get accessible armature, grease pencil jumps from unwarped to warped position randomly.

Exact steps for others to reproduce the error
Load and unzip this file.
grease_liboverride.zip
Zip archive contains a directory "Grease_liboverr" with two files …
Grease_liboverr/Attach_Grease_Suzanne.blend
Grease_liboverr/link_grease.blend

Load link_grease.blend. Select armature and enter Pose mode. If you move one of the bones, you can see how lattice jumps randomly between initial position and shrinkwrapped position.

Try same steps with original file "Attach_Grease_Suzanne.blend". After you selected armature and entered pose mode, moving bones give flawless results.

**System Information** Operating system: Linux-4.15.0-96-lowlatency-x86_64-with-debian-buster-sid 64 Bits Graphics card: Mesa DRI Intel(R) HD Graphics 510 (Skylake GT1) Intel Open Source Technology Center 4.5 (Core Profile) Mesa 19.2.8 **Blender Version** Broken: version: 2.83 (sub 13), branch: master, commit date: 2020-04-15 21:34, hash: `f0221ff667` **Short description of error** Rigged and latticed grease pencil drawing works flawlessly in original file. If linked in another file, and library override is used to get accessible armature, grease pencil jumps from unwarped to warped position randomly. **Exact steps for others to reproduce the error** Load and unzip this file. [grease_liboverride.zip](https://archive.blender.org/developer/F8476874/grease_liboverride.zip) Zip archive contains a directory "Grease_liboverr" with two files … Grease_liboverr/Attach_Grease_Suzanne.blend Grease_liboverr/link_grease.blend Load link_grease.blend. Select armature and enter Pose mode. If you move one of the bones, you can see how lattice jumps randomly between initial position and shrinkwrapped position. Try same steps with original file "Attach_Grease_Suzanne.blend". After you selected armature and entered pose mode, moving bones give flawless results.

Leonard Siebeneicher commented

2020-04-16 14:36:06 +02:00

Added subscriber: @siebeneicher

Leonard Siebeneicher commented

2020-04-16 14:48:41 +02:00

Instead of Grease Pencil object I tried with a mesh torus. It does show similar problems. Might not relate to Grease Pencil?

Richard Antalik commented

2020-04-16 17:53:59 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Bastien Montagne commented

2020-04-17 17:08:18 +02:00

Added subscriber: @mont29

Bastien Montagne self-assigned this 2020-04-17 17:08:18 +02:00

Bastien Montagne commented

2020-04-17 17:08:18 +02:00

That's more of a TODO actually, support for overrides was never added to GP modifiers... Trying to see now how hard it is to add it (should not be, but getting weird results currently).

blender-admin commented

2020-04-17 17:48:27 +02:00

This issue was referenced by f915549ee7

This issue was referenced by f915549ee7d6747f633ae7fa242ffd69e7a03312

Bastien Montagne commented

2020-04-17 17:51:32 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Bastien Montagne closed this issue

2020-04-17 17:51:32 +02:00

Leonard Siebeneicher commented

2020-04-18 13:36:40 +02:00

Hi,

I tried newest Blender (hash 76b3aac802). From Blender History I can see, that it contains commit f915549ee7.

If I tweak linked file, it still showed this behaviour.
But after I removed linked data and re-linked collection 'warped_suzanne' from Attach_Grease_Suzanne.blend setup (with library override done after), it does work flawlessly!

Thank you for your efforts.

Hi, I tried newest Blender (hash 76b3aac802f9). From Blender History I can see, that it contains commit f915549ee7d6. If I tweak linked file, it still showed this behaviour. But after I removed linked data and re-linked collection 'warped_suzanne' from Attach_Grease_Suzanne.blend setup (with library override done after), it does work flawlessly! Thank you for your efforts.

Bastien Montagne commented

2020-04-18 14:27:01 +02:00

Note that you can 'fix' existing files by remapping the ID pointers of their gpencil modifiers to the proper overriding local data-blocks.

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Rigged and latticed grease pencil, linked and 'static overrided'. Odd lattice behaviour #75786