DepsGraph: Disabled objects referenced by other disabled object still get evaluated #89599

New Issue

Demeter Dzadik · 2021-07-02T13:11:25+02:00

Demeter Dzadik commented

2021-07-02 13:11:25 +02:00

System Information
Operating system: Linux-5.8.0-7642-generic-x86_64-with-glibc2.32 64 Bits
Graphics card: GeForce RTX 2080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 460.56

Blender Version
Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-07-01 07:25, hash: 96d487b3ae

Short description of error
In the below setup, although all mesh objects are disabled, the viewport is still extremely slow because the objects (which have expensive modifiers like Remesh and Boolean) are still evaluated.

They stop being evaluated only when their grandparent collection ("coll Root") is also hidden from the viewport(or deleted).

Note that there are no drivers involved.

Exact steps for others to reproduce the error
File: disabled_objects.blend

Try moving the cube, should see bad performance even though all meshes are disabled. If your PC is too powerful to notice, put a subsurf modifier on the object named "expensive mesh", that should make it a lot more expensive.
Disable or remove the "coll Root" collection, and performance goes back to normal.

depsgraph_bug-2021-07-02_13.10.41.mp4

**System Information** Operating system: Linux-5.8.0-7642-generic-x86_64-with-glibc2.32 64 Bits Graphics card: GeForce RTX 2080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 460.56 **Blender Version** Broken: version: 3.0.0 Alpha, branch: master, commit date: 2021-07-01 07:25, hash: `96d487b3ae` **Short description of error** In the below setup, although all mesh objects are disabled, the viewport is still extremely slow because the objects (which have expensive modifiers like Remesh and Boolean) are still evaluated. They stop being evaluated only when their grandparent collection ("coll Root") is also hidden from the viewport(or deleted). Note that there are no drivers involved. **Exact steps for others to reproduce the error** File: [disabled_objects.blend](https://archive.blender.org/developer/F10208790/disabled_objects.blend) - Try moving the cube, should see bad performance even though all meshes are disabled. If your PC is too powerful to notice, put a subsurf modifier on the object named "expensive mesh", that should make it a lot more expensive. - Disable or remove the "coll Root" collection, and performance goes back to normal. [depsgraph_bug-2021-07-02_13.10.41.mp4](https://archive.blender.org/developer/F10208793/depsgraph_bug-2021-07-02_13.10.41.mp4)

Demeter Dzadik commented

2021-07-02 13:11:25 +02:00

Added subscriber: @Mets

blender-admin commented

2021-07-02 13:11:25 +02:00

#101036 was marked as duplicate of this issue

Germano Cavalcante commented

2022-01-29 20:07:10 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2022-01-29 20:07:10 +01:00

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Germano Cavalcante commented

2022-01-29 20:07:10 +01:00

This seems to be the same problem as #87439 (Mesh to Volume modifier is recalculated even if the volume object is disabled/hidden).
Basically the problem is that some modifiers are still evaluated even if the object is invisible.
But since the modifier and steps to reproduce the issue are different, I'm not entirely sure if it's a duplicate.

This seems to be the same problem as #87439 (Mesh to Volume modifier is recalculated even if the volume object is disabled/hidden). Basically the problem is that some modifiers are still evaluated even if the object is invisible. But since the modifier and steps to reproduce the issue are different, I'm not entirely sure if it's a duplicate.

Raimund Klink commented

2022-02-01 11:50:38 +01:00

Added subscriber: @Raimund58

Omar Emara commented

2022-09-13 17:12:46 +02:00

Added subscribers: @Magnative, @OmarEmaraDev

Philipp Oeser removed the

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DepsGraph: Disabled objects referenced by other disabled object still get evaluated #89599