Compositing nodes - drivers don't really work #63927

New Issue

Robert Juricek · 2019-04-27T07:32:08+02:00

Robert Juricek commented

2019-04-27 07:32:08 +02:00

System Information
Operating system: any
Graphics card: unrelated

Blender Version
Broken: (example: 2.80, any, master)

Short description of error
Using drivers for anything in Compositing nodes work only while rendering a single image. When you render an animation, the value of the driver keeps frozen to the value before rendering.

Exact steps for others to reproduce the error

Compositing -> Use Nodes
Add -> Converter -> Math, place the new node between Render Layers and Composite
right click on one of the values -> Add Driver -> write any expression, for example (bpy.context.scene.frame_current%5)/8
Ctrl+F12 for Render Animation
The result is not animated

comp_driver.blend

**System Information** Operating system: any Graphics card: unrelated **Blender Version** Broken: (example: 2.80, any, master) **Short description of error** Using drivers for anything in Compositing nodes work only while rendering a single image. When you render an animation, the value of the driver keeps frozen to the value before rendering. **Exact steps for others to reproduce the error** 1. Compositing -> Use Nodes 2. Add -> Converter -> Math, place the new node between Render Layers and Composite 3. right click on one of the values -> Add Driver -> write any expression, for example (bpy.context.scene.frame_current%5)/8 4. Ctrl+F12 for Render Animation 5. The result is not animated [comp_driver.blend](https://archive.blender.org/developer/F6992411/comp_driver.blend)

Robert Juricek commented

2019-04-27 07:32:08 +02:00

Added subscriber: @rooobertek

Sebastian Parborg commented

2019-04-29 19:32:32 +02:00

Added subscribers: @Sergey, @ZedDB

Sergey Sharybin was assigned by Sebastian Parborg

2019-04-29 19:32:32 +02:00

Sebastian Parborg commented

2019-04-29 19:32:32 +02:00

@Sergey I'm guessing that there are some missing frame driver refresh logic here? The value is stuck at the last evaluated one. So if you are on frame 16 when you start the render animation, it will keep that value.

blender-admin commented

2019-05-20 15:14:10 +02:00

This issue was referenced by b432209f63

This issue was referenced by b432209f63f873a025a7f4c3a79aa1d697dc9b98

Sergey Sharybin commented

2019-05-23 16:27:18 +02:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2019-05-23 16:27:18 +02:00

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Compositing nodes - drivers don't really work #63927