Regression: Drop in performance when manipulating instances in geometry nodes Blender 3.2 #98796

New Issue

Monaime · 2022-06-11T17:12:11+02:00

Monaime commented

2022-06-11 17:12:11 +02:00

System Information
Operating system: Windows 10
Graphics card: GTX 1080

Blender Version
Broken: 3.2.0 Caused by {a9b94e5f81ced89381033fd8d13ef6e3489e2665}
Worked: 3.1.2

Short description of error
There is big difference in performance between Blender 3.1 and 3.2 when manipulating instances using Translate, Rotate and Scale Instances, especially when the instances are coming from a Collection Info node.
There is also a drop in performance when the instances are generated procedurally, like distributing instances on points, but it's not as apparent.

Exact steps for others to reproduce the error

Open the attached Blend file in Blender 3.2 and 3.1
Play the animation and notice the difference in the framrate and execution time of the nodes.

GN_istances.blend

**System Information** Operating system: Windows 10 Graphics card: GTX 1080 **Blender Version** Broken: 3.2.0 Caused by {a9b94e5f81ced89381033fd8d13ef6e3489e2665} Worked: 3.1.2 **Short description of error** There is big difference in performance between Blender 3.1 and 3.2 when manipulating instances using Translate, Rotate and Scale Instances, especially when the instances are coming from a Collection Info node. There is also a drop in performance when the instances are generated procedurally, like distributing instances on points, but it's not as apparent. **Exact steps for others to reproduce the error** - Open the attached Blend file in Blender 3.2 and 3.1 - Play the animation and notice the difference in the framrate and execution time of the nodes. [GN_istances.blend](https://archive.blender.org/developer/F13145997/GN_istances.blend)

Monaime commented

2022-06-11 17:12:11 +02:00

Added subscriber: @Monaime

Germano Cavalcante commented

2022-06-13 21:38:50 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2022-06-13 21:38:50 +02:00

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

Germano Cavalcante commented

2022-06-13 21:38:50 +02:00

There are some issues for instances that when resolved will significantly improve performance (See #92963 (Instancing Performance Improvements))
But in the meantime I would not expect such a regression.
So I'm confirming the bug.

I'm looking for the commit that introduced the problem.

There are some issues for instances that when resolved will significantly improve performance (See #92963 (Instancing Performance Improvements)) But in the meantime I would not expect such a regression. So I'm confirming the bug. I'm looking for the commit that introduced the problem.

Germano Cavalcante changed title from ~~Drop in performance when manipulating instances in geometry nodes Blender 3.2~~ to Regression: Drop in performance when manipulating instances in geometry nodes Blender 3.2

2022-06-14 00:15:47 +02:00

Germano Cavalcante commented

2022-06-14 00:15:47 +02:00

Added subscriber: @kevindietrich