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Sculpt lagging after restarting blender with VBO set
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System Information
Windows 7 64-bit, 6 MB RAM
Nvidia Geforce 405 (newest driver as of today, same issue on previous driver)

Blender Version
Broken: 2.72.2 c8995ec (latest buildbot version)
Worked: (optional)

Short description of error

Sculpt is lagging severely with VBO´s enabled, but only after settings saved and restart. This took some time to figure out since I normally have a lot of customized settings.This has worked fine on same system before.

Exact steps for others to reproduce the error

  1. Start Blender with factory settings
  2. Activate VBO´s in user setting and save
  3. Add UV-sphere
  4. Add multires modifier, subdivide to about 1 mil polygons
  5. Sculpt (smooth and fine)
  6. Exit Blender
  7. Restart Blender
  8. Redo steps 3-5 (laggy performance)
  9. Reset factory settings and redo steps 2-5 (smooth and fine again)

No other settings but VBOs were changed, except that I enabled fast navigate in sculpt panel.



Event Timeline

Ted Nielsen (brilliant_ape) raised the priority of this task from to Needs Triage by Developer.
Ted Nielsen (brilliant_ape) updated the task description. (Show Details)

Can't confirm on Linux (GTX 570). Will check later again on Windows

Indeed, running dualboot and tried in Ubuntu. No issue there.

Bastien Montagne (mont29) closed this task as Archived.Dec 8 2014, 5:32 PM
Bastien Montagne (mont29) claimed this task.

Those are OpenGL drivers issue, it is a known fact in some cases VBOs will be slower than no VBOs (not logical, but...). We cannot do much here, actually. Thanks for the report, anyway.