Using GN generated attribute in shader editor drastically reduces Workbench viewport performance after switching from Eevee #95766

New Issue

Ludvik Koutny · 2022-02-14T13:07:58+01:00

Ludvik Koutny commented

2022-02-14 13:07:58 +01:00

System Information
Operating system:
Graphics card:

Blender Version
Broken: (example: 2.80, edbf15d3c0, master, 2018-11-28, as found on the splash screen)
Worked: (newest version of Blender that worked as expected)

Short description of error
When using attribute which is being generated by Geometry Nodes in Shader Editor, the Workbench viewport performance drops (especially navigation) drops drastically when switching to it from Eevee.

NOTE: I am attaching stripped down version of a production scene because I have not succeeded in recreating the issue from scratch. Here is a proof that I tried to recreate the issue from scratch:
GNSlowNavigationBug.blend
This attached file should contain all the same conditions which could possibly lead to the same bug, yet it does not happen in it.

Exact steps for others to reproduce the error

Open the attached .blend file: Tree_SlowNavigationBug.blend
Switch viewport mode from Workbench to Eevee
Switch viewport mode from Eevee back to workbench
Result: The viewport performance is poor
Expected: The viewport performance remains unaffected
In the shader editor, in M_Bark material, disconnect the Attribute node
Save the file
Re-open the file
Switch viewport mode from Workbench to Eevee and then back to Workbench
Result: Disconnecting the attribute node solved the Workbench viewport performance issue
Expected: Using the GN generated attribute in shader editor does not have such extreme impact on Workbench viewport navigation performance.

NOTE: While the source of the issue may be the same as https://developer.blender.org/T94609 I am still reporting it as a new bug, since the effect and repro steps are different.

**System Information** Operating system: Graphics card: **Blender Version** Broken: (example: 2.80, edbf15d3c044, master, 2018-11-28, as found on the splash screen) Worked: (newest version of Blender that worked as expected) **Short description of error** When using attribute which is being generated by Geometry Nodes in Shader Editor, the Workbench viewport performance drops (especially navigation) drops drastically when switching to it from Eevee. **NOTE: I am attaching stripped down version of a production scene because I have not succeeded in recreating the issue from scratch. Here is a proof that I tried to recreate the issue from scratch:** [GNSlowNavigationBug.blend](https://archive.blender.org/developer/F12866590/GNSlowNavigationBug.blend) **This attached file should contain all the same conditions which could possibly lead to the same bug, yet it does not happen in it.** **Exact steps for others to reproduce the error** 1. Open the attached .blend file: [Tree_SlowNavigationBug.blend](https://archive.blender.org/developer/F12866591/Tree_SlowNavigationBug.blend) 2. Switch viewport mode from Workbench to Eevee 3. Switch viewport mode from Eevee back to workbench Result: The viewport performance is poor Expected: The viewport performance remains unaffected 4. In the shader editor, in M_Bark material, disconnect the Attribute node 5. Save the file 6. Re-open the file 7. Switch viewport mode from Workbench to Eevee and then back to Workbench Result: Disconnecting the attribute node solved the Workbench viewport performance issue Expected: Using the GN generated attribute in shader editor does not have such extreme impact on Workbench viewport navigation performance. NOTE: While the source of the issue may be the same as https://developer.blender.org/T94609 I am still reporting it as a new bug, since the effect and repro steps are different.

Ludvik Koutny commented

2022-02-14 13:07:58 +01:00

Added subscriber: @Rawalanche

lictex_ commented

2022-02-14 13:21:51 +01:00

Added subscriber: @lictex_1

lictex_ commented

2022-02-14 13:21:51 +01:00

possibly same as #93440?

Pratik Borhade commented

2022-02-15 06:24:34 +01:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-02-15 06:24:34 +01:00

possibly same as #93440?

Seems same issue so I will mark this report as duplicate

@Rawalanche hi, feel free to comment or reopen if there is any misunderstanding from my side.

> possibly same as #93440? Seems same issue so I will mark this report as duplicate @Rawalanche hi, feel free to comment or reopen if there is any misunderstanding from my side.

Pratik Borhade commented

2022-02-15 06:25:02 +01:00

Closed as duplicate of #93440

Pratik Borhade closed this issue

2022-02-15 06:25:02 +01:00

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Using GN generated attribute in shader editor drastically reduces Workbench viewport performance after switching from Eevee #95766