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Maniphest T57677

Hardware acceleration in blender not working correctly while gizmos are present (noticeable lag)
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Description

System Information
Win 10, GTX 1070

Blender Version
Broken: (example: 2.69.7 4b206af, see splash screen)

blender-2.80.0 4e9911663a2 windows64

Short description of error

While Gizmos are on ( like transform ) there is noticeable lag when rotating the view in a blender.

This can be noticed only when another background apps are not using hardware acceleration.
All need to be disabled to replicate, that includes chrome running WebGL or NVIDIA Experience.

*How to Replicate*

  • Run only blender app without anything in the background
  • enable transform gizmo
  • rotate the view

Related Objects

Event Timeline

Adrian Rutkowski (rrtk) created this task.Nov 7 2018, 2:11 PM
Ludvik Koutny (rawalanche) added a subscriber: Ludvik Koutny (rawalanche).EditedNov 7 2018, 2:54 PM

Try this:

I had a similar problem but it was not related to gizmos. It's just that Blender has some issues which cause nVidia GPU's to constantly start idling.

Adrian Rutkowski (rrtk) added a comment.Nov 7 2018, 3:29 PM

Still noticeable slowdown,
I tried other options as well,

on the other hand
if I change the active tool to the cursor that is not using the gizmo
or with gizmo, if I open chrome and some site that uses WebGL, instant speed up, without closing blender

Adrian Rutkowski (rrtk) added a comment.EditedNov 7 2018, 4:06 PM

I also replicated that on Wacom companion 2, win10 intel card

Philipp Oeser (lichtwerk) lowered the priority of this task from 90 to Normal.Nov 8 2018, 11:25 AM
Philipp Oeser (lichtwerk) added a project: GPU / Viewport.
Philipp Oeser (lichtwerk) added subscribers: Clément Foucault (fclem), Brecht Van Lommel (brecht), Philipp Oeser (lichtwerk).

Cant seem to be able to reproduce on linux (nvidia 970m).

@Clément Foucault (fclem), @Brecht Van Lommel (brecht): does that ring a bell somehow?

Brecht Van Lommel (brecht) edited projects, added BF Blender; removed BF Blender: 2.8.Dec 11 2018, 3:09 PM
Adrian Rutkowski (rrtk) mentioned this in T61474: Laggy interaction with gizmos, does not happen when running other 3D apps at the same time.Feb 14 2019, 12:38 PM
Campbell Barton (campbellbarton) closed this task as a duplicate of T61474: Laggy interaction with gizmos, does not happen when running other 3D apps at the same time.Mar 26 2019, 11:54 PM
Clément Foucault (fclem) edited projects, added EEVEE & Viewport; removed GPU / Viewport.Jun 19 2020, 11:10 PM