Motion tracking on Blender 2.76 rc3 on mac osx #46403

New Issue

Sillon · 2015-10-07T09:35:10+02:00

Sillon commented

2015-10-07 09:35:10 +02:00

System Information
Mac OsX 10.10.5

Blender Version
fb78f6d
2.76 rc3

Short description of error
Motion tracking don't work.
"Detect Features" works but when I click play in "Track" nothing happens.
It works perfectly on 2.75 (c27589e)

Best regards

**System Information** Mac OsX 10.10.5 **Blender Version** fb78f6d 2.76 rc3 **Short description of error** Motion tracking don't work. "Detect Features" works but when I click play in "Track" nothing happens. It works perfectly on 2.75 (c27589e) Best regards

Sillon commented

2015-10-07 09:35:10 +02:00

Changed status to: 'Open'

Sillon commented

2015-10-07 09:35:10 +02:00

Added subscriber: @robsil47

Sergey Sharybin was assigned by Campbell Barton

2015-10-07 11:00:05 +02:00

Campbell Barton commented

2015-10-07 11:00:05 +02:00

Added subscriber: @ideasman42

Bastien Montagne commented

2015-10-08 10:21:50 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2015-10-08 10:21:50 +02:00

As usual, please attach here needed files to help reproducing the issue (here would be .blend + video file I guess)…

Sillon commented

2015-10-08 12:07:26 +02:00

Hello, I hope it'll help.
MTrack_test.blend

video_test.mp4

Hello, I hope it'll help. [MTrack_test.blend](https://archive.blender.org/developer/F243383/MTrack_test.blend) [video_test.mp4](https://archive.blender.org/developer/F243384/video_test.mp4)

Bastien Montagne commented

2015-10-08 13:13:47 +02:00

thanks for the files. Cannot confirm that here on linux with latest master, tracks works as expected afaikt…

Brecht Van Lommel commented

2015-10-10 01:07:41 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2015-10-10 01:07:41 +02:00

I can confirm the issue on OS X with 2.76 RC3 and my own build using Xcode 7 and the 10.11 SDK. The build with the older SDK / compiler at #46341#339613 works though, so I think for the 2.76 release this should work, but there's definitely something broken here.

In my own builds it works fine in debug mode, but not release mode. It sometimes crashes even, but there's no consistent backtrace, looks like some random memory corruption.

I can confirm the issue on OS X with 2.76 RC3 and my own build using Xcode 7 and the 10.11 SDK. The build with the older SDK / compiler at #46341#339613 works though, so I think for the 2.76 release this should work, but there's definitely something broken here. In my own builds it works fine in debug mode, but not release mode. It sometimes crashes even, but there's no consistent backtrace, looks like some random memory corruption.

blender-admin commented

2015-10-10 04:09:37 +02:00

This issue was referenced by 64e4f9967f

This issue was referenced by 64e4f9967fbc5ee40c6aa8a46d7527faf2ca356e

Brecht Van Lommel commented

2015-10-10 04:21:46 +02:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2015-10-10 04:21:46 +02:00

Brecht Van Lommel commented

2015-10-10 04:24:19 +02:00

Fixed now, thanks for the report.

It seems the new clang version compiles this code in such a way that FloatImage temp_image is on exactly the same stack location on the second call to GetImageForMarker(), without getting overwritten by something else, so the uninitialized shape_ in the second call has the exact same value as the one from the first call.

Fixed now, thanks for the report. It seems the new clang version compiles this code in such a way that `FloatImage temp_image` is on exactly the same stack location on the second call to `GetImageForMarker()`, without getting overwritten by something else, so the uninitialized `shape_` in the second call has the exact same value as the one from the first call.

Sillon commented

2015-10-15 15:59:07 +02:00

Hello, I tried today 2.76 and the bug is fixed.
Congratulations.
Thank you

Hello, I tried today 2.76 and the bug is fixed. Congratulations. Thank you

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Motion tracking on Blender 2.76 rc3 on mac osx #46403