Collada Export Booleaned faces missing (fixed in main, request to backport to 3.6 LTS) #122322

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opened 2024-05-27 18:00:57 +02:00 by Eveline · 6 comments

System Information
Operating system: Windows-10-10.0.19045-SP0
Graphics card: Nvidia GTX 970

Blender Version
Broken: 3.4.1 up until 3.6.12, branch: blender-v3.6-release
Worked: 3.3.0, 4.0.1, 4.1.0

Faces that were booleaned missing

  1. Delete the default cube
  2. Add a new cube
  3. Duplicate the cube
  4. Use the second cube to boolean difference the first one
  5. Export Collada
  6. Import Collada

This does however work fine with the default cube.

**System Information** Operating system: Windows-10-10.0.19045-SP0 Graphics card: Nvidia GTX 970 **Blender Version** Broken: 3.4.1 up until 3.6.12, branch: blender-v3.6-release Worked: 3.3.0, 4.0.1, 4.1.0 **Faces that were booleaned missing** 1. Delete the default cube 2. Add a new cube 3. Duplicate the cube 4. Use the second cube to boolean difference the first one 5. Export Collada 6. Import Collada This does however work fine with the default cube.
Eveline added the
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labels 2024-05-27 18:00:58 +02:00
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Can confirm up to 4.2 cc @GaiaClary . However, keep in mind that dae support in blender is likely gonna be deprecated.

Can confirm up to 4.2 cc @GaiaClary . However, keep in mind that dae support in blender is likely gonna be deprecated.
YimingWu added
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labels 2024-05-28 04:18:17 +02:00
Member

This is due to the Boolean modifier creating bogus material indices

image

Workaround is to apply the modifier and remove the material index attribute

Can confirm up to 4.2 cc @GaiaClary . However, keep in mind that dae support in blender is likely gonna be deprecated.

This buggy behavior seems to have been fixed in 4.2 though (cannot repro with the provided steps in 4.2)

@Eveline-Catteneo , @ChengduLittleA : can you confirm these steps are fine in 4.2?

If so, this sounds like a request to backport that fix (which corrected the boolean modifier) to 3.6 LTS, is that right?

This is due to the Boolean modifier creating bogus material indices ![image](/attachments/b0596590-9b46-446b-b3e2-315470a04c63) Workaround is to apply the modifier and remove the material index attribute > Can confirm up to 4.2 cc @GaiaClary . However, keep in mind that dae support in blender is likely gonna be deprecated. This buggy behavior seems to have been fixed in 4.2 though (cannot repro with the provided steps in 4.2) @Eveline-Catteneo , @ChengduLittleA : can you confirm these steps are fine in 4.2? If so, this sounds like a request to backport that fix (which corrected the boolean modifier) to 3.6 LTS, is that right?
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Philipp Oeser added
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labels 2024-05-28 10:10:27 +02:00
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labels 2024-05-28 18:13:46 +02:00
Eveline reopened this issue 2024-05-28 18:14:54 +02:00
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labels 2024-05-28 18:14:57 +02:00
Author

Sorry, closed this by mistake.

Sorry, closed this by mistake.
Author

It already works as intended in 4.0.1 and 4.1.0 so yes, it would just need to be backported to 3.6 LTS. I'm not sure it's problem with the boolean modifier or collada export though since it works fine in 3.6 LTS with the default cube, i just retested that to make sure i wasn't crazy haha. But yes, works fine in 4.0.1 and 4.1.0 (i don't have 4.2 but i suspect it works fine there too since it's already fixed in 4.0.1 and 4.1.0)

It already works as intended in 4.0.1 and 4.1.0 so yes, it would just need to be backported to 3.6 LTS. I'm not sure it's problem with the boolean modifier or collada export though since it works fine in 3.6 LTS with the default cube, i just retested that to make sure i wasn't crazy haha. But yes, works fine in 4.0.1 and 4.1.0 (i don't have 4.2 but i suspect it works fine there too since it's already fixed in 4.0.1 and 4.1.0)
Philipp Oeser changed title from Collada Export Booleaned faces missing to Collada Export Booleaned faces missing (fixed in main, request to backport to 3.6 LTS) 2024-05-29 08:47:15 +02:00
Philipp Oeser added this to the 3.6 LTS milestone 2024-05-29 08:47:19 +02:00
Philipp Oeser added
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labels 2024-05-29 08:47:28 +02:00
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Can confirm that it has to do with material indexes. If a material is applied to all faces in edit mode before duplicating the object and using boolean, it works fine. Also if a material is applied to all faces in edit mode after the boolean.

Can confirm that it has to do with material indexes. If a material is applied to all faces in edit mode before duplicating the object and using boolean, it works fine. Also if a material is applied to all faces in edit mode after the boolean.
Member

@lichtwerk Yepp, looks like 4.2 make this file from scratch gets me the correct dae. Then we can backport this.

@lichtwerk Yepp, looks like 4.2 make this file from scratch gets me the correct `dae`. Then we can backport this.
Philipp Oeser added the
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label 2024-06-21 09:00:12 +02:00
Bart van der Braak added
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labels 2024-08-14 13:00:14 +02:00
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Reference: blender/blender#122322
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