Regression: OBJ Importer fails to import objects #110948

New Issue

Closed

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

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

Andrew Woods added the

labels 2023-08-09 12:02:20 +02:00

Andrew Woods commented

2023-08-09 12:04:20 +02:00

Author

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

Member

@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.

YimingWu added

Needs Information from User

Pipeline, Assets & IO

and removed

labels 2023-08-09 12:25:25 +02:00

Andrew Woods commented

2023-08-09 12:30:30 +02:00

Author

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

Author

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

Member

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

and removed

Needs Information from User

labels 2023-08-09 15:47:44 +02:00

Aras Pranckevicius referenced this issue from a commit

2023-08-09 16:06:55 +02:00

OBJ: fix import of files with really large polygons (e.g. 7000 vertices in one poly)

Aras Pranckevicius referenced this issue

2023-08-09 16:11:35 +02:00

Blender LTS: Maintenance Task 3.6 #109399

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

Member

@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

Member

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

and removed

labels 2023-08-09 21:10:32 +02:00

Aras Pranckevicius closed this issue

2023-08-09 21:10:48 +02:00

Philipp Oeser referenced this issue from a commit

2023-09-05 12:27:20 +02:00

OBJ: fix import of files with really large polygons (e.g. 7000 vertices in one poly)

Sign in to join this conversation.

No Label

Animation & Rigging

Asset Browser Project Overview

Automated Testing

Blender Asset Bundle

Dependency Graph

Development Management

EEVEE & Viewport

Images & Movies

Motion Tracking

Nodes & Physics

Pipeline, Assets & IO

Platforms, Builds & Tests

Render & Cycles

Render Pipeline

Sculpt, Paint & Texture

Video Sequencer

Virtual Reality

Blender 2.8 Project

Milestone 1: Basic, Local Asset Browser

Good First Issue

Animation & Rigging

Development Management

EEVEE & Viewport

Nodes & Physics

Pipeline, Assets & IO

Platforms, Builds & Tests

Render & Cycles

Sculpt, Paint & Texture

Needs Info from Developers

Needs Information from User

No Milestone

No project

No Assignees

5 Participants

Notifications

Due Date

The due date is invalid or out of range. Please use the format 'yyyy-mm-dd'.

No due date set.

Dependencies

No dependencies set.

Reference: blender/blender#110948

No description provided.