Generated texture coords change after disable/enable a modifier [which is than reset on file save and reload]. #98126

New Issue

David Neufer · 2022-05-14T22:47:02+02:00

David Neufer commented

2022-05-14 22:47:02 +02:00

System Information
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.13

Blender Version
Broken: version: 3.2.0 Beta, branch: master, commit date: 2022-05-12 16:38, hash: 018acc5688
Worked: (newest version of Blender that worked as expected)

I tested 2.93.9 - and the same problem occurred.

Short description of error
[Please fill out a short description of the error here]

I am animating wavelike motion through radial tubes with color ramp and wave texture. For this I am using the array and curve modifiers. Upon opening the file, the wave happens in a linear fashion, unlike what I want. However, if I disable the object in viewport, then re-enable it, it works as I want. If I then revert to saved, the problem reappears. Note, I can also disable the curve modifier, then re-enable it, and it then works as expected.

Exact steps for others to reproduce the error
[Please describe the exact steps needed to reproduce the issue]

Open the file. Use "Viewport Shading - Rendered." Play animation. Observe the motion. Then, disable-in-viewport the object called "xmuta.horiz.mesh" (or its curve modifier.) Re-enable it. Observe the motion. This should show the intended outgoing and incoming waves.

ArrayCurveProblem.blend

[Based on the default startup or an attached .blend file (as simple as possible)]

**System Information** Operating system: Windows-10-10.0.22000-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 2070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.13 **Blender Version** Broken: version: 3.2.0 Beta, branch: master, commit date: 2022-05-12 16:38, hash: `018acc5688` Worked: (newest version of Blender that worked as expected) I tested 2.93.9 - and the same problem occurred. **Short description of error** [Please fill out a short description of the error here] I am animating wavelike motion through radial tubes with color ramp and wave texture. For this I am using the array and curve modifiers. Upon opening the file, the wave happens in a linear fashion, unlike what I want. However, if I disable the object in viewport, then re-enable it, it works as I want. If I then revert to saved, the problem reappears. Note, I can also disable the curve modifier, then re-enable it, and it then works as expected. **Exact steps for others to reproduce the error** [Please describe the exact steps needed to reproduce the issue] Open the file. Use "Viewport Shading - Rendered." Play animation. Observe the motion. Then, disable-in-viewport the object called "xmuta.horiz.mesh" (or its curve modifier.) Re-enable it. Observe the motion. This should show the intended outgoing and incoming waves. [ArrayCurveProblem.blend](https://archive.blender.org/developer/F13074785/ArrayCurveProblem.blend) [Based on the default startup or an attached .blend file (as simple as possible)]

David Neufer commented

2022-05-14 22:47:02 +02:00

Added subscriber: @emen7

Philipp Oeser commented

2022-05-16 16:28:42 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2022-05-16 16:28:42 +02:00

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

Philipp Oeser commented

2022-05-16 16:28:42 +02:00

Can confirm that Generated texture coords change after disable/enable a curve modifier [which is than reset on file save and reload].

Suggested workaround: use UV coords, these are stable across sessions.

Looks like a bug though.

Can confirm that `Generated` texture coords change after disable/enable a curve modifier [which is than reset on file save and reload]. Suggested workaround: use UV coords, these are stable across sessions. Looks like a bug though.

Philipp Oeser changed title from ~~Strange Curve Modifier Behavior~~ to `Generated` texture coords change after disable/enable a curve modifier [which is than reset on file save and reload].

2022-05-16 16:29:11 +02:00

Philipp Oeser commented

2022-05-16 16:33:34 +02:00

Happens for other modifers, too (e.g. Simple Deform).
Wondering if this is somewhat expected, needs another look with fresh eyes...

Happens for other modifers, too (e.g. Simple Deform). Wondering if this is somewhat expected, needs another look with fresh eyes...

Philipp Oeser changed title from ~~`Generated` texture coords change after disable/enable a curve modifier [which is than reset on file save and reload].~~ to `Generated` texture coords change after disable/enable a modifier [which is than reset on file save and reload].

2022-05-16 16:33:49 +02:00

Brecht Van Lommel commented

2022-05-23 16:38:11 +02:00

Closed as duplicate of #63595

Brecht Van Lommel closed this issue

2022-05-23 16:38:11 +02:00

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Generated texture coords change after disable/enable a modifier [which is than reset on file save and reload]. #98126

`Generated` texture coords change after disable/enable a modifier [which is than reset on file save and reload]. #98126