Processing of NLA stripes when moved incomplete #81533

New Issue

Meino Cramer · 2020-10-08T10:48:54+02:00

Meino Cramer commented

2020-10-08 10:48:54 +02:00

System Information
Operating system: GENTOO Linux, (driver: NVIDIA-Linux-x86_64-455.28 for graphics card)
Graphics card: NVIDIA Corporation TU106 [GeForce RTX 2060 SUPER] (rev a1)

Blender Version
Broken: at least blender-2.91.0-d8fcd8a3162f-linux64, blender-2.90.1-linux64
Worked: not known

Short description of error
frame range restricted FCurve modifier are not updated, when NLA strip is moved

Exact steps for others to reproduce the error
Animate default cube for the range of 100 frames
Go NLA editor
"accept" NLA stripe (sorry...I am no native speaker...I mean: Make it "real" (yellow instead of orange).
Go tweak mode
add modifier to one of the fcurves
restrict frame range to 100 frames (so it effcts the size of the NLA stripe)
leave tweak mode
move NLA stripe 100 frames in x direction, accept with RETURN
go Tweak mode:
The range of the restriction of the modifier is not moved according to the stripe movement, instead it is "left behind".
Sync and apply Scale does not fix this.
This creates a lot of extra work to fix each of the modifiers range settings by hand and is error prone when it comes
to more complex animations.

(I cannot "drop files"...I use an window manager only...I would like to ask for an "upload file" bottom, which opens
a filebrowser... :) )

**System Information** Operating system: GENTOO Linux, (driver: NVIDIA-Linux-x86_64-455.28 for graphics card) Graphics card: NVIDIA Corporation TU106 [GeForce RTX 2060 SUPER] (rev a1) **Blender Version** Broken: at least blender-2.91.0-d8fcd8a3162f-linux64, blender-2.90.1-linux64 Worked: not known **Short description of error** frame range restricted FCurve modifier are not updated, when NLA strip is moved **Exact steps for others to reproduce the error** Animate default cube for the range of 100 frames Go NLA editor "accept" NLA stripe (sorry...I am no native speaker...I mean: Make it "real" (yellow instead of orange). Go tweak mode add modifier to one of the fcurves restrict frame range to 100 frames (so it effcts the size of the NLA stripe) leave tweak mode move NLA stripe 100 frames in x direction, accept with RETURN go Tweak mode: The range of the restriction of the modifier is not moved according to the stripe movement, instead it is "left behind". Sync and apply Scale does not fix this. This creates a lot of extra work to fix each of the modifiers range settings by hand and is error prone when it comes to more complex animations. (I cannot "drop files"...I use an window manager only...I would like to ask for an "upload file" bottom, which opens a filebrowser... :) )

Meino Cramer commented

2020-10-08 10:48:54 +02:00

Added subscriber: @mcq

Philipp Oeser commented

2020-10-09 15:57:50 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-10-09 15:57:50 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Philipp Oeser commented

2020-10-09 15:57:50 +02:00

It would actually be good to have an example file (this just makes it easier if multiple people are having a look here, and ensures we are all on the same page)

You can use this button:

It would actually be good to have an example file (this just makes it easier if multiple people are having a look here, and ensures we are all on the same page) You can use this button: ![image.png](https://archive.blender.org/developer/F8971329/image.png)

Meino Cramer commented

2020-10-09 18:16:29 +02:00

Here it comes... :)
Load the file into blender
Select the NLA stripe
Go into tweak mode ()
In the graph editor window there is a fcurve displayed.
This fcurve has a nois emodifier which restricted frame range (0...250)
Leave tweak mode
Move the NLA-stripe 250 frames right ( g 205 )
Go tweak mode
Now the fcurve has moved 250 frames to the right, starting 250, ending 500
But the modifier still influences the range of 0...250, which is not exspected.
"Apply Scale" and "Sync Action length" do not change this.
anim.blend

Here it comes... :) Load the file into blender Select the NLA stripe Go into tweak mode (<TAB>) In the graph editor window there is a fcurve displayed. This fcurve has a nois emodifier which restricted frame range (0...250) Leave tweak mode Move the NLA-stripe 250 frames right ( g 205 <return> ) Go tweak mode Now the fcurve has moved 250 frames to the right, starting 250, ending 500 But the modifier still influences the range of 0...250, which is not exspected. "Apply Scale" and "Sync Action length" do not change this. [anim.blend](https://archive.blender.org/developer/F8971679/anim.blend)

Philipp Oeser self-assigned this 2020-10-11 10:43:51 +02:00

Philipp Oeser commented

2020-10-11 10:43:51 +02:00

Changed status from 'Needs User Info' to: 'Confirmed'

Philipp Oeser commented

2020-10-11 10:43:51 +02:00

More of a TODO (not a bug), but will have a look next week

Wayde Moss commented

2020-10-16 00:39:32 +02:00

Added subscriber: @wbmoss_dev

Meino Cramer commented

2020-10-16 06:49:58 +02:00

Some dependencies:
Currently it is possible to render negative frames with Eevee only ( https://developer.blender.org/T81534 ).
If an animation created this way and checked subsequently with Eevee for faster turnaround times should
be "ported" to cycles, one has to go through all NLA stripes and for any curve one has to fix the restricted
frame ranges by hand.

Some dependencies: Currently it is possible to render negative frames with Eevee only ( https://developer.blender.org/T81534 ). If an animation created this way and checked subsequently with Eevee for faster turnaround times should be "ported" to cycles, one has to go through all NLA stripes and for any curve one has to fix the restricted frame ranges by hand.

Wayde Moss commented

2020-10-28 22:20:48 +01:00

It seems that the NLA evaluates fmodifiers just fine. It appears to be an fcurve rendering bug where the noise modifier isn't drawn based on the NLA time remapping.

Philipp Oeser removed their assignment 2020-11-02 16:39:04 +01:00

Philipp Oeser commented

2020-11-02 16:39:04 +01:00

Will step down to not block others from looking at this