Driver in particle system doesn't visualy update #50593

New Issue

Serge Lyatin · 2017-02-04T21:33:09+01:00

Serge Lyatin commented

2017-02-04 21:33:09 +01:00

System Information
Win7 32bit

Blender Version
Broken: 2.78a

Short description of error
Driver in particle system updates only with enabled viewport render button. A little bit visual unfriendly. However working in final render.

Exact steps for others to reproduce the error
Press right arrow on keyboard and watch the driver. After frame 20 vieport render will be disabled, and driver will stop updating.

Driver_PS.blend

**System Information** Win7 32bit **Blender Version** Broken: 2.78a **Short description of error** Driver in particle system updates only with enabled viewport render button. A little bit visual unfriendly. However working in final render. **Exact steps for others to reproduce the error** Press right arrow on keyboard and watch the driver. After frame 20 vieport render will be disabled, and driver will stop updating. [Driver_PS.blend](https://archive.blender.org/developer/F446071/Driver_PS.blend)

Serge Lyatin commented

2017-02-04 21:33:09 +01:00

Changed status to: 'Open'

Serge Lyatin commented

2017-02-04 21:33:09 +01:00

Added subscriber: @SergeL

Luca Rood commented

2017-02-07 00:03:17 +01:00

Added subscriber: @LucaRood-3

Luca Rood commented

2017-02-07 00:03:17 +01:00

Changed status from 'Open' to: 'Resolved'

Luca Rood closed this issue

2017-02-07 00:03:17 +01:00

Luca Rood self-assigned this 2017-02-07 00:03:17 +01:00

Luca Rood commented

2017-02-07 00:03:17 +01:00

This behavior can only be observed with the old dependency graph, and works fine with the new one. The old dependency graph will be completely replaced in Blender 2.8, but in the meantime, you can already use the new depsgraph by running Blender from the command line like this: blender --enable-new-depsgraph

On a separate note, I actually find it weird that particle system settings such as "Render Emitter" continue having effect after the particle system is made invisible. As I see it, the driver should indeed not be updated when the particle system is invisible. I wonder if that is unintended behavior... Oh well...

Anyway, closing this as the OP's issue has been solved in the new depsgraph.

This behavior can only be observed with the old dependency graph, and works fine with the new one. The old dependency graph will be completely replaced in Blender 2.8, but in the meantime, you can already use the new depsgraph by running Blender from the command line like this: `blender --enable-new-depsgraph` On a separate note, I actually find it weird that particle system settings such as "Render Emitter" continue having effect after the particle system is made invisible. As I see it, the driver should indeed not be updated when the particle system is invisible. I wonder if that is unintended behavior... Oh well... Anyway, closing this as the OP's issue has been solved in the new depsgraph.

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Driver in particle system doesn't visualy update #50593