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Maniphest T75862

Texture Paint is Laggy
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Description

System Information
Operating system: Windows 10 & Linux Ubuntu 18.10
Graphics card: Nvidia RTX1070

Blender Version
version: 2.82 (sub 7), branch: master, commit date: 2020-03-12 05:06, hash: 375c7dc4caf4, type: Release
build date: 2020-03-12, 15:41:08

Short description of error
When I paint a texture in the 3D view there are a lot of lags. The wider the brush, the more lags.
the blurred brush is unusable, it freezes my computer for several tens of seconds.
I tested on Windows and Linux Ubuntu and I have the same issue.

Exact steps for others to reproduce the error

T75862.zip6 MBDownload

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Event Timeline

EMMANUEL Boyer (petitwilly) created this task.Apr 18 2020, 11:51 AM
Ankit Meel (ankitm) changed the task status from Needs Triage to Confirmed.EditedApr 20 2020, 12:12 PM
Ankit Meel (ankitm) added a project: Sculpt, Paint & Texture.
Ankit Meel (ankitm) added a subscriber: Ankit Meel (ankitm).

Since the report is correct (and I can see the lag) , confirming. Could be a limitation of current implementation, but that's upto module devs.

rB0e7871f9c30142866427ae87e81c0cf516ff3320

Ankit Meel (ankitm) updated the task description. (Show Details)Apr 20 2020, 12:42 PM
Jeroen Bakker (jbakker) closed this task as Archived.May 19 2020, 11:47 AM
Jeroen Bakker (jbakker) claimed this task.
Jeroen Bakker (jbakker) added a subscriber: Jeroen Bakker (jbakker).

It is a limitation of the algorithm. We could change the algorithm, but that should not be part of a bug report, the current algorithm works as intended.

While we do continue to work on improving performance in general, potential performance improvements are not handled as bug reports.