File Browser crash on large image previews #45451

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Jason van Gumster · 2015-07-15T21:39:23+02:00

Jason van Gumster commented

2015-07-15 21:39:23 +02:00

System Information
Arch Linux (64-bit); Nvidia Quadro K5000M

Blender Version
Broken: 2.75 e6364c6
Worked: 2.74 (and likely 2.75a; have not yet tested, though)

Short description of error
When looking at large images (in my case, 16-bit PNG with a resolution of 1200x4000) in the File Browser with thumbnail display, Blender will crash.

Exact steps for others to reproduce the error
I don't have a .blend file to share, but I have attached a gdb backtrace.image_preview_crash-backtrace.txt

**System Information** Arch Linux (64-bit); Nvidia Quadro K5000M **Blender Version** Broken: 2.75 e6364c6 Worked: 2.74 (and likely 2.75a; have not yet tested, though) **Short description of error** When looking at large images (in my case, 16-bit PNG with a resolution of 1200x4000) in the File Browser with thumbnail display, Blender will crash. **Exact steps for others to reproduce the error** I don't have a .blend file to share, but I have attached a gdb backtrace.[image_preview_crash-backtrace.txt](https://archive.blender.org/developer/F207330/image_preview_crash-backtrace.txt)

Jason van Gumster commented

2015-07-15 21:39:23 +02:00

Changed status to: 'Open'

Jason van Gumster commented

2015-07-15 21:39:23 +02:00

Added subscriber: @JasonvanGumster

Bastien Montagne commented

2015-07-15 22:36:36 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2015-07-15 22:36:36 +02:00

Can you please upload somewhere (google drive, dropbox, …) one of those big files? Backtrace does not help much as is, crashes in OpenGL driver it seems, probably generated thumbnail is invalid somehow but we need to be able to reproduce the crash to investigate.

perfection cat commented

2015-07-16 04:50:26 +02:00

Added subscriber: @sindra1961

perfection cat commented

2015-07-16 04:50:26 +02:00

I cannot reproduce this here(win32).

bit depth of example.png is 24.
bit depth of example2.png is 64.
Both image size is 1200x4000.

example.png

example2.png

version 2.75 (sub 2), branch b'master', commit date b'2015-07-14' b'21:49', hash b'dfd383c', b'Release'

I cannot reproduce this here(win32). ![screen.png](https://archive.blender.org/developer/F207367/screen.png) bit depth of example.png is 24. bit depth of example2.png is 64. Both image size is 1200x4000. example.png ![example.png](https://archive.blender.org/developer/F207373/example.png) example2.png ![example2.png](https://archive.blender.org/developer/F207375/example2.png) version 2.75 (sub 2), branch b'master', commit date b'2015-07-14' b'21:49', hash b'dfd383c', b'Release'

Jason van Gumster commented

2015-07-16 16:06:36 +02:00

Just did some additional checks and it's not about the image size. It's specifically about bit-depth I think. The attached image is a 16-bit PNG (generated by Blender, BTW) and it consistently crashes Blender for me in thumbnail view on the File Browser.

Just did some additional checks and it's not about the image size. It's specifically about bit-depth I think. The attached image is a 16-bit PNG (generated by Blender, BTW) and it consistently crashes Blender for me in thumbnail view on the File Browser. ![jellyfish-veins.png](https://archive.blender.org/developer/F207435/jellyfish-veins.png)

Bastien Montagne self-assigned this 2015-07-16 16:45:52 +02:00

Bastien Montagne commented

2015-07-16 16:45:52 +02:00

OK, do not get any crash here, but I can confirm something is bad here - I think the generated thumbnail PNG is not read correctly for some reason, because the first time, when preview is generated and hence thumbnail imbuf is not read from cached thumbnails png, everything is OK. It’s when reloading that issue arise (here it shows a part of the splash it seems).

Will investigate.

OK, do not get any crash here, but I can confirm something is bad here - I think the generated thumbnail PNG is not read correctly for some reason, because the first time, when preview is generated and hence thumbnail imbuf is *not* read from cached thumbnails png, everything is OK. It’s when reloading that issue arise (here it shows a part of the splash it seems). Will investigate.

blender-admin commented

2015-07-16 17:28:25 +02:00

This issue was referenced by f2087b4830

This issue was referenced by f2087b4830b2f59188e9c604450db5f37b6d472a

Bastien Montagne commented

2015-07-16 17:29:18 +02:00

Changed status from 'Open' to: 'Resolved'

Bastien Montagne closed this issue

2015-07-16 17:29:18 +02:00

Bastien Montagne commented

2015-07-16 17:33:22 +02:00

Added subscriber: @jason-10