Deform modifier cannot be applied to Multires levels if shape keys are on the object #115176

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Julien Kaspar · 2023-11-20T12:46:52+01:00

Julien Kaspar commented

2023-11-20 12:46:52 +01:00

System Information
Operating system: Linux-6.6.1-gentoo-x86_64-AMD_Ryzen_Threadripper_1950X_16-Core_Processor-with-glibc2.37 64 Bits, X11 UI
Graphics card: AMD Radeon RX 7900 XT (radeonsi, navi31, LLVM 16.0.6, DRM 3.54, 6.6.1-gentoo) AMD 4.6 (Core Profile) Mesa 23.3.0-rc4

Blender Version
Broken: version: 4.1.0 Alpha, branch: main, commit date: 2023-11-19 23:36, hash: 41f9f2753a70
Worked: (newest version of Blender that worked as expected)

Short description of error
Deformation modifier such as Shrinkwrap modifier can be optionally applied onto a Multiresolution modifier instead of the base mesh.

This is impossible when shape keys are also present on the object. In that case an error popup will appear:
"Modifier cannot be applied to a mesh with shape keys"

This is wrong though. The error should only appear if the modifier is being applied on the base mesh. Applying it on the multires levels should be possible.

Exact steps for others to reproduce the error

Add a Multires modifier.
Subdivide a couple of times.
Add a Simple Deform mdoififier and apply it (Works fine. Deformation is applied onto the multires levels instead of the base mesh).
Add a shape key.
Add another Simple Deform modifier and apply it (Error message instead).

**System Information** Operating system: Linux-6.6.1-gentoo-x86_64-AMD_Ryzen_Threadripper_1950X_16-Core_Processor-with-glibc2.37 64 Bits, X11 UI Graphics card: AMD Radeon RX 7900 XT (radeonsi, navi31, LLVM 16.0.6, DRM 3.54, 6.6.1-gentoo) AMD 4.6 (Core Profile) Mesa 23.3.0-rc4 **Blender Version** Broken: version: 4.1.0 Alpha, branch: main, commit date: 2023-11-19 23:36, hash: `41f9f2753a70` Worked: (newest version of Blender that worked as expected) **Short description of error** Deformation modifier such as Shrinkwrap modifier can be optionally applied onto a Multiresolution modifier instead of the base mesh. This is impossible when shape keys are also present on the object. In that case an error popup will appear: "Modifier cannot be applied to a mesh with shape keys" This is wrong though. The error should only appear if the modifier is being applied on the base mesh. Applying it on the multires levels should be possible. **Exact steps for others to reproduce the error** 1. Add a Multires modifier. 2. Subdivide a couple of times. 3. Add a Simple Deform mdoififier and apply it (Works fine. Deformation is applied onto the multires levels instead of the base mesh). 4. Add a shape key. 5. Add another Simple Deform modifier and apply it (Error message instead).

Julien Kaspar added the

labels 2023-11-20 12:46:53 +01:00

Iliya Katushenock added the