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Regression: Sculpting a shapekey results in new shapekeys not being based on the basis shapekey #126074

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opened 2024-08-08 04:49:01 +02:00 by kursad k · 14 comments
kursad k commented 2024-08-08 04:49:01 +02:00
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System Information
Operating system: Win 11
Graphics card: RTX 2070

Blender Version
Broken: 4035f2fe9c
Broken: 4.3
Worked: 4.2

Short description of error
Sculpting a shapekey results in new shapekeys not being based on the basis shapekey

Exact steps for others to reproduce the error
suzanne
add a shape key, set to 1.0
sculpt mode, make some changes
object mode
add a shape key , set to 1.0
the result is multiplied

suzanne
add a shape key, set to 1.0
edit mode, make some changes
object mode
add a shape key , set to 1.0
the result is not multiplied

**System Information** Operating system: Win 11 Graphics card: RTX 2070 **Blender Version** Broken: 4035f2fe9c0c Broken: 4.3 Worked: 4.2 **Short description of error** Sculpting a shapekey results in new shapekeys not being based on the basis shapekey <video src="/attachments/bf1dca2a-89f6-4b7b-b1e6-2aa459615d2c" title="blender_shRpl9g1Ko.mp4" controls></video> **Exact steps for others to reproduce the error** suzanne add a shape key, set to 1.0 sculpt mode, make some changes object mode add a shape key , set to 1.0 the result is multiplied suzanne add a shape key, set to 1.0 edit mode, make some changes object mode add a shape key , set to 1.0 the result is not multiplied
blender_YUCF9ZI7Gs.mp4
498 KiB
bug_07082024_2148_40.zip
189 KiB
kursad k added the
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 labels 2024-08-08 04:49:02 +02:00
Philipp Oeser commented 2024-08-08 10:17:45 +02:00
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Can confirm in that file, but cant repro from scratch, needs a bit more investigation.
Do you have steps to repro from scratch?

Can confirm in that file, but cant repro from scratch, needs a bit more investigation. Do you have steps to repro from scratch?
Nika Kutsniashvili commented 2024-08-08 10:32:00 +02:00
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From the looks of it 'from_mix' is True when pressing the button, but should be False. Do you have any addons that might be replacing that panel by any chance?

From the looks of it 'from_mix' is True when pressing the button, but should be False. Do you have any addons that might be replacing that panel by any chance?
Philipp Oeser commented 2024-08-08 11:11:18 +02:00
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@nickberckley : dont think it is an addon, happens locally here, too with provided file and 'from_mix' id False

image

@nickberckley : dont think it is an addon, happens locally here, too with provided file and 'from_mix' id False ![image](/attachments/3fecb928-2d73-43e9-909f-38cda0459f6f)
image.png
27 KiB
Philipp Oeser changed title from Adding a new shapekey doubles the effect to Adding a new shapekey doubles the effect in particular file 2024-08-08 11:20:36 +02:00
Philipp Oeser commented 2024-08-08 11:21:44 +02:00
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Still needs more investigation, but for this file, I will confirm the issue

@kursadk : if you could repro from scratch, this would still be much appreciated

Still needs more investigation, but for this file, I will confirm the issue @kursadk : if you could repro from scratch, this would still be much appreciated
Philipp Oeser added
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 labels 2024-08-08 11:22:02 +02:00
Nika Kutsniashvili commented 2024-08-08 11:24:02 +02:00
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I can confirm on that object in that file, but creating Suzanne from scratch I can't. Seems to be something gone wrong with object

I can confirm on that object in that file, but creating Suzanne from scratch I can't. Seems to be something gone wrong with object
Philipp Oeser commented 2024-08-08 12:54:38 +02:00
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Seems to be related to #88759 / #67185

Same workaround as mentioned here works btw. #88759 (comment)

Seems to be related to #88759 / #67185 Same workaround as mentioned here works btw. https://projects.blender.org/blender/blender/issues/88759#issuecomment-214190
kursad k commented 2024-08-08 18:13:14 +02:00
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That file was from scratch. I went ahead and set the scene to factory defaults, did the same steps and I am still having the same problem.

Still needs more investigation, but for this file, I will confirm the issue

@kursadk : if you could repro from scratch, this would still be much appreciated

That file was from scratch. I went ahead and set the scene to factory defaults, did the same steps and I am still having the same problem. > Still needs more investigation, but for this file, I will confirm the issue > > @kursadk : if you could repro from scratch, this would still be much appreciated
bug_2_07082024_2148_40.zip
109 KiB
kursad k commented 2024-08-08 18:21:54 +02:00
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@lichtwerk @nickberckley

I traced it back to the sculpt mode at least it seems that way for now. The shapekey modification in the bug file was done in sculpt mode. This seems like a real bug to me rather than a usage issue.

suzanne
add a shape key, set to 1.0
sculpt mode, make some changes
object mode
add a shape key , set to 1.0
the result is multiplied

suzanne
add a shape key, set to 1.0
edit mode, make some changes
object mode
add a shape key , set to 1.0
the result is not multiplied

@lichtwerk @nickberckley I traced it back to the sculpt mode at least it seems that way for now. The shapekey modification in the bug file was done in sculpt mode. This seems like a real bug to me rather than a usage issue. suzanne add a shape key, set to 1.0 sculpt mode, make some changes object mode add a shape key , set to 1.0 the result is multiplied suzanne add a shape key, set to 1.0 edit mode, make some changes object mode add a shape key , set to 1.0 the result is not multiplied
kursad k commented 2024-08-08 18:24:40 +02:00
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Please see the video

Please see the video <video src="/attachments/bf1dca2a-89f6-4b7b-b1e6-2aa459615d2c" title="blender_shRpl9g1Ko.mp4" controls></video>
blender_shRpl9g1Ko.mp4
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Nika Kutsniashvili commented 2024-08-08 18:43:50 +02:00
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Oof, that's a high priority then imho

Oof, that's a high priority then imho
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Iliya Katushenock added the
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 label 2024-08-08 18:45:18 +02:00
Philipp Oeser commented 2024-08-08 19:05:06 +02:00
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Yeah, can confirm now. Will update the report description

Yeah, can confirm now. Will update the report description
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Philipp Oeser changed title from Adding a new shapekey doubles the effect in particular file to Sculpting a shapekey results in new shapekeys not being based on the basis shapekey 2024-08-08 19:08:30 +02:00
Philipp Oeser added this to the 4.3 milestone 2024-08-08 19:11:18 +02:00
Iliya Katushenock changed title from Sculpting a shapekey results in new shapekeys not being based on the basis shapekey to Regression: Sculpting a shapekey results in new shapekeys not being based on the basis shapekey 2024-08-08 19:11:49 +02:00
Sean Kim self-assigned this 2024-08-08 20:02:18 +02:00
Sean Kim commented 2024-08-08 20:02:31 +02:00
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I'll look into this

I'll look into this
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 labels 2024-08-09 22:34:54 +02:00
kursad k commented 2024-08-10 03:03:26 +02:00
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This also explains why adding shapekeys when the multires modifier is enabled was causing the classic MR mesh blowups and spikies given the modifcation was done on the actual mesh data not the shapekey which is something the MR modifier hates to deal with.

This also explains why adding shapekeys when the multires modifier is enabled was causing the classic MR mesh blowups and spikies given the modifcation was done on the actual mesh data not the shapekey which is something the MR modifier hates to deal with.
Hans Goudey commented 2024-08-10 17:41:25 +02:00
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I don't think this is related to multires sculpting actually. The mistake in the recently refactored code didn't apply to the multires code paths.

I don't think this is related to multires sculpting actually. The mistake in the recently refactored code didn't apply to the multires code paths.
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