Regression: The start frame of NLA tracks can not be negative. #100918
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Reference: blender/blender#100918
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System Information
Operating system: Windows 10
Graphics card: NVIDIA GeForce RTX 2070
Blender Version
Broken: 3.3.0, branch: master, commit date: 2022-09-06 15:39
Worked: version: 3.2.0, branch: master, commit date: 2022-06-08 10:22
Caused by
bd00324c26
Short description of error
Tracks start frame can not be negative. I the track is moved left, as soon as its left bound reach frame 0, it stays stuck here and the right bound is shrunk down.
Exact steps for others to reproduce the error
Working version (3.2)
![nla_track_ok_blender_3.2.gif](https://archive.blender.org/developer/F13469365/nla_track_ok_blender_3.2.gif)
Bug (3.3)
![nla_track_bug_blender_3.3.gif](https://archive.blender.org/developer/F13469367/nla_track_bug_blender_3.3.gif)
Test File
nla_track.blend
This seems linked to this upgrade : https://developer.blender.org/rBbd00324c264c
Added subscriber: @Alesk
#101368 was marked as duplicate of this issue
Added subscriber: @AdamJanz
Added subscribers: @thibaulltt, @BClark, @dr.sybren, @mano-wii
Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'
I'm not very familiar with the area.
If it really is a bug, I wonder how such trivial behavior went unnoticed in the review of D14658.
Cc @dr.sybren, @BClark, @thibaulltt
Oh I can see how we missed it because there were so many issues around this feature to get it working that we were testing the core clip behavior and not moving clips into negative ranges.
Does it change if "allow negative frames is on for the timeline?" I am downloading 3.3 now and will check but just wondering if that makes a difference.
Hi Brad, no that setting doesn't make any difference, I actually checked that a bit earlier today. In fact, "Allow Negative Frames" only permits the user to make the current frame negative. It does not permit a user to set the Start frame of the timeline to negative. EDIT: At least that is the behavior in 3.3 beta
b3fc8206be
released on August 9 (I have not tried the official 3.3 release yet).Changed status from 'Needs Developer To Reproduce' to: 'Confirmed'
Added subscriber: @artutava
Happening here on 3.3 offical release. It's a very important bug... Wondering if opening files that were created in previous versions will affect the nla. @AdamJanz @BClark
The start frame of NLA tracks can not be negative.to Regression: The start frame of NLA tracks can not be negative.Added subscriber: @lichtwerk
Hi there everyone, I've been on a bit of a crunch lately due to work. The fix is quite simple, I simply made a typo in the code for
BKE_nlastrip_compute_frame_from_previous_strip()
.In the NLA code, we have two sets of macros :
MINFRAME- [x]
for the integer and floating-point macros for the smallest frame value which can be represented by the program (a.k.a the closest to 0),MINAFRAME- [x]
for the integer and floating-point macros for the lowest frame value which can be represented by the program.In the function outlined above, I simply made a typo and forgot the
A
in the middle of the name :)I'll make a patch, and see how fast I can make it available in a general release (could this maybe be a hotfix for the next patch version @lichtwerk ? maybe 3.3.1 ?)
To everyone here, see : D15940
Once committed, could be added here, yes #100749 (Blender LTS: Maintenance Task 3.3)
This issue was referenced by
7c33d7b4b5
Changed status from 'Confirmed' to: 'Resolved'
Wonderful! Thanks so much for the fix! Have a great week ahead guys. :-)
That was quick ! Thank you very much !
Very quick!! Is that a build for that already?
@artutava I don't think so. I would suggest checking back tomorrow at noon UTC for a daily master build over on https://builder.blender.org/download/daily/ to get the latest master build. However, be warned : those are technically beta builds and prone to crashing (not everything that ends up on master is stable, after all).
EDIT : while the link says daily builds of Blender are stable for the 3.3 version, I do not know which branch they originate from. If it's
master
, consider it beta. If it'sblender-v3.3-release
, it's way more stable since this is the LTS branch with a lot of fixes.Added subscriber: @CHARLES-MURRAY
Added subscribers: @item412, @deadpin