driver on an NLA animated time strip isn't purple and cannot be removed #86109

New Issue

Emilien Colombier · 2021-02-28T23:44:22+01:00

Emilien Colombier commented

2021-02-28 23:44:22 +01:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1070 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 460.79

Blender Version
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-02-25 05:34, hash: 0e1c6a29cb

version: 2.92.0, branch: master, commit date: 2021-02-24 16:25, hash: 02948a2cab
Worked: never

Short description of error
When adding a driver on an NLA animated time strip value, the value does not turn purple, and cannot be remove.
Don't know if it's related or not, but you also cannot delete/clear keyframes on that particular value aswell. Should i do another bug report ?

Exact steps for others to reproduce the error
(see video attached)
animate the default cube (example : revolution on Z axis, from frame 1 to 250)
create an empty, add a custom property, animate that property
copy the custom property as a new driver
go to the NLA, push down the cube action, go to it's strip option and check "animated time strips"
paste the driver on the "animated time strips" value
bugreport_drivercolor.mp4

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce GTX 1070 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 460.79 **Blender Version** Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-02-25 05:34, hash: `0e1c6a29cb` + version: 2.92.0, branch: master, commit date: 2021-02-24 16:25, hash: `02948a2cab` Worked: never **Short description of error** When adding a driver on an NLA animated time strip value, the value does not turn purple, and cannot be remove. Don't know if it's related or not, but you also cannot delete/clear keyframes on that particular value aswell. Should i do another bug report ? **Exact steps for others to reproduce the error** (see video attached) animate the default cube (example : revolution on Z axis, from frame 1 to 250) create an empty, add a custom property, animate that property copy the custom property as a new driver go to the NLA, push down the cube action, go to it's strip option and check "animated time strips" paste the driver on the "animated time strips" value [bugreport_drivercolor.mp4](https://archive.blender.org/developer/F9853821/bugreport_drivercolor.mp4)

Emilien Colombier commented

2021-02-28 23:44:22 +01:00

Added subscriber: @Peine_Perdue

Philipp Oeser commented

2021-03-01 10:06:11 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2021-03-01 10:06:11 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Philipp Oeser commented

2021-03-01 10:06:11 +01:00

Can confirm, will check.

Philipp Oeser commented

2021-03-01 10:28:59 +01:00

NLA control curves seem to get special handling in BKE_fcurve_find_by_rna_context_ui

See the following two comments:

/* Special case for NLA Control Curves... */

    /* Set the special flag, since it cannot be a normal action/driver
     * if we've been told to start looking here...
     */

This then has to mentioned consequences (e.g. the button never receiving the UI_BUT_DRIVEN flag)

Havent dug further, but it seems at least inconsistent that you can add a driver, it is sort of evaluated properly, but that does not reflect in the UI.
If it is not supposed to be supported, I guess it would be good to prevent adding drivers in the first place.

related: b617dec065

NLA control curves seem to get special handling in `BKE_fcurve_find_by_rna_context_ui` See the following two comments: ``` /* Special case for NLA Control Curves... */ ``` ``` /* Set the special flag, since it cannot be a normal action/driver * if we've been told to start looking here... */ ``` This then has to mentioned consequences (e.g. the button never receiving the `UI_BUT_DRIVEN` flag) Havent dug further, but it seems at least inconsistent that you can add a driver, it is sort of evaluated properly, but that does not reflect in the UI. If it is not supposed to be supported, I guess it would be good to prevent adding drivers in the first place. related: b617dec065

Wayde Moss commented

2021-03-02 02:00:24 +01:00

Added subscriber: @wbmoss_dev

Philipp Oeser removed the

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driver on an NLA animated time strip isn't purple and cannot be removed #86109