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Regression: OBJ Importer fails to import objects #110948

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opened 2023-08-09 12:02:20 +02:00 by Andrew Woods · 7 comments
Andrew Woods commented 2023-08-09 12:02:20 +02:00
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System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA RTX A4000/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 528.24

Blender Version
Broken: version: 4.0.0 Alpha, branch: main, commit date: 2023-08-08 20:16, hash: 5cdec2f12ab0
Worked: 3.6 (Only Legacy Importer)

The New OBJ importer (introduced some releases ago) fails importing some objects (it is consistent in different tries, it skips always the same objects). This issues are present only with the new importer, the Legacy importer (no longer present in 4.0) works fine, albeit slowly.
I have this issue with many files similar to the one attached.
I opened the same files with different softwares, they all read all objects.

import the obj with new importer, then import it with legacy importer; see that the new one skip some objects

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

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: NVIDIA RTX A4000/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 528.24 **Blender Version** Broken: version: 4.0.0 Alpha, branch: main, commit date: 2023-08-08 20:16, hash: `5cdec2f12ab0` Worked: 3.6 (Only Legacy Importer) The New OBJ importer (introduced some releases ago) fails importing some objects (it is consistent in different tries, it skips always the same objects). This issues are present only with the new importer, the Legacy importer (no longer present in 4.0) works fine, albeit slowly. I have this issue with many files similar to the one attached. I opened the same files with different softwares, they all read all objects. import the obj with new importer, then import it with legacy importer; see that the new one skip some objects [Based on the default startup or an attached .blend file (as simple as possible)]
SG_i-o_obj_2.JPG
254 KiB
SG_i-o_obj_1.JPG
197 KiB
SG_i-o_obj_2.JPG SG_i-o_obj_1.JPG
Andrew Woods added the
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 labels 2023-08-09 12:02:20 +02:00
Andrew Woods commented 2023-08-09 12:04:20 +02:00
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I attached the obj, but it doesn't appear in the task, maybe because of the size

I attached the obj, but it doesn't appear in the task, maybe because of the size
YimingWu commented 2023-08-09 12:25:12 +02:00
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@Andrew-Woods you could maybe share the file with wetransfer or some other services? Looks like it shouldn't be a huge file.

@Andrew-Woods you could maybe share the file with wetransfer or some other services? Looks like it shouldn't be a huge file.
Andrew Woods commented 2023-08-09 12:30:30 +02:00
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Sure! here it is

https://we.tl/t-tAQ6zY7BGm

it got heavy because it's been exported from Rhino and there is much unnecessary geometry

Sure! here it is https://we.tl/t-tAQ6zY7BGm it got heavy because it's been exported from Rhino and there is much unnecessary geometry
Andrew Woods commented 2023-08-09 12:32:32 +02:00
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I have other files but I prefer share them privately because of sensitive data, if you need them

I have other files but I prefer share them privately because of sensitive data, if you need them
Aras Pranckevicius self-assigned this 2023-08-09 15:46:09 +02:00
Aras Pranckevicius commented 2023-08-09 15:47:13 +02:00
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Will look into this, thanks! I think at least one issue might be what is pointed out in the console when importing that repro: "OBJ file contains a line 1820372 that is too long (max. length 65536)" (there's one polygon with over 6000 vertices in the file). Maybe some other issues too, will investigate.

Will look into this, thanks! I think at least one issue might be what is pointed out in the console when importing that repro: "OBJ file contains a line 1820372 that is too long (max. length 65536)" (there's one polygon with over 6000 vertices in the file). Maybe some other issues too, will investigate.
Aras Pranckevicius added
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Needs Information from User
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 labels 2023-08-09 15:47:44 +02:00
Iliya Katushenock changed title from New OBJ Importer fails to import objects to Regression: OBJ Importer fails to import objects 2023-08-09 16:14:46 +02:00
Iliya Katushenock commented 2023-08-09 16:16:10 +02:00
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@aras_p If this has worked before, is it high priority regression?

@aras_p If this has worked before, is it high priority regression?
Jesse Yurkovich commented 2023-08-09 21:02:12 +02:00
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A workaround/fix was checked in as 3bf2757b47. Is this being kept Open to work further on another solution?

A workaround/fix was checked in as 3bf2757b478c8d6295ef5bd3d3c1cf2661493f50. Is this being kept Open to work further on another solution?
Aras Pranckevicius added
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 labels 2023-08-09 21:10:32 +02:00
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Reference: blender/blender#110948
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