GPencil: Merge layers add previous frames to each frame #81490

New Issue

info@vraven.us · 2020-10-06T18:12:52+02:00

info@vraven.us commented

2020-10-06 18:12:52 +02:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce RTX 2070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 452.06

Blender Version
Broken: version: 2.83.7, branch: master, commit date: 2020-09-30 06:12, hash: 192e591af9
Worked: (newest version of Blender that worked as expected)

Short description of error
merging an animation layer with the layer below it causes all previous frames to be merged on each successive frame. The result is that each frame of the merged layer contains all previous frames and memory usage skyrockets and eventually if the animation is long/complicated enough, a crash.

Exact steps for others to reproduce the error
This works with any animation I've tried. The attached file contains a simple animation of a penguin picking up a pebble. To illustrate the problem, create a blank layer and move it below the animation layer. Then choose the animation layer and select 'Merge Down'.
The memory usage goes from 76MB to 3.4GB. This also works with interpolated frames. The position of the playhead is significant in that frame is copied singly.
pebbleLoop001_001.blend
[Based on the default startup or an attached .blend file (as simple as possible)]

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce RTX 2070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 452.06 **Blender Version** Broken: version: 2.83.7, branch: master, commit date: 2020-09-30 06:12, hash: `192e591af9` Worked: (newest version of Blender that worked as expected) **Short description of error** merging an animation layer with the layer below it causes all previous frames to be merged on each successive frame. The result is that each frame of the merged layer contains all previous frames and memory usage skyrockets and eventually if the animation is long/complicated enough, a crash. **Exact steps for others to reproduce the error** This works with any animation I've tried. The attached file contains a simple animation of a penguin picking up a pebble. To illustrate the problem, create a blank layer and move it below the animation layer. Then choose the animation layer and select 'Merge Down'. The memory usage goes from 76MB to 3.4GB. This also works with interpolated frames. The position of the playhead is significant in that frame is copied singly. [pebbleLoop001_001.blend](https://archive.blender.org/developer/F8961536/pebbleLoop001_001.blend) [Based on the default startup or an attached .blend file (as simple as possible)]

info@vraven.us commented

2020-10-06 18:12:52 +02:00

Added subscriber: @rfrancian

Antonio Vazquez self-assigned this 2020-10-07 16:26:54 +02:00

Antonio Vazquez changed title from ~~grease pencil merge layer bug~~ to GPencil: merge layer bug

2020-10-07 16:27:10 +02:00

Antonio Vazquez commented

2020-10-07 16:29:09 +02:00

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

Antonio Vazquez changed title from ~~GPencil: merge layer bug~~ to GPencil: Merge layers add previous frames to each frame

2020-10-07 16:29:43 +02:00

blender-admin commented

2020-10-07 17:09:43 +02:00

This issue was referenced by 0ea4aab55e

This issue was referenced by 0ea4aab55e9352779e786157d4004ba445fedfb4

Antonio Vazquez commented

2020-10-07 17:10:17 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Antonio Vazquez closed this issue

2020-10-07 17:10:17 +02:00

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GPencil: Merge layers add previous frames to each frame #81490