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Maniphest T44553

The option "Front Faces Only" doesn't work in Clay and ClayStrips brushes.
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Description

System Information
Windows 8.1
2047MB NVIDIA GeForce GT 740M (Acer Incorporated [ALI])

Blender Version
Broken: 2.74-f8540d7-win64
Worked: 2.73

Short description of error
Option "Front Faces Only" doesn't work in Clay and ClayStrips brushes.

Exact steps for others to reproduce the error
Turn-on option "Front Faces Only" in Clay or ClayStrips and sculpt on thin mesh, on the other side of the mesh appears artifacts.
Here's some video that show the problem:
https://www.youtube.com/watch?v=1jPUURe1blc

Revisions and Commits

rB Blender
rBdc3533030abe Fix T44553.
rB5dfe88adbaee Fix T44553: Dyntopo ignores front-face option

Related Objects

Event Timeline

Michael Kret (atekron) created this task.Apr 29 2015, 8:25 PM
Michael Kret (atekron) raised the priority of this task from to 90.
Michael Kret (atekron) updated the task description. (Show Details)
Michael Kret (atekron) added projects: BF Blender, Sculpt, Paint & Texture.
Michael Kret (atekron) edited a custom field.
Michael Kret (atekron) added a subscriber: Michael Kret (atekron).
Campbell Barton (campbellbarton) claimed this task.EditedApr 30 2015, 11:08 AM
Campbell Barton (campbellbarton) lowered the priority of this task from 90 to 30.

Note, the video is set to private. Please upload a blend file.

Aaron Carlisle (Blendify) added a subscriber: Aaron Carlisle (Blendify).May 6 2015, 10:14 PM

the video is no longer private is a .blend still needed?

perfection cat (sindra1961) added a subscriber: perfection cat (sindra1961).May 7 2015, 3:48 AM

This may be caused by Dyntopo.
I attach a file.

sculpt.blend448 KBDownload

You open the file, and change Dyntopo effectively.
You may recognize that face which you cannot see if you operate it with the brush that you were pointed out around ten times is reconstituted.
If you enter the Edit mode, you know it clearly.
The version that I tried it.
version 2.74 (sub 5), branch b'master', commit date b'2015-05-05' b'20:34', hash b'c246e0c', b'Release'

perfection cat (sindra1961) added a comment.May 7 2015, 3:50 AM

Probably I think that it occurs other than the reported brush.

Michael Kret (atekron) added a comment.May 7 2015, 6:42 AM

This bug occurs only with clay and clay strip brushes, other brushes not affected.

perfection cat (sindra1961) added a comment.May 7 2015, 7:22 AM

Blob brush

opposite side
The face of the non-visible side is reconstituted.

perfection cat (sindra1961) added a comment.May 7 2015, 8:25 AM

There is the place that is displayed so that edge sometimes separates when I drag a brush.


An invisible part is displayed obviously.

There does not separate when I display it with edit mode.

face is reconstituted when I confirm the other side there.

Bastien Montagne (mont29) reassigned this task from Campbell Barton (campbellbarton) to Antonis Ryakiotakis (psy-fi).May 15 2015, 5:48 PM
Bastien Montagne (mont29) added subscribers: Campbell Barton (campbellbarton), Bastien Montagne (mont29).

Antony, maybe you can make sense out of this?

Bastien Montagne (mont29) raised the priority of this task from 30 to Normal.May 15 2015, 5:48 PM
Campbell Barton (campbellbarton) claimed this task.May 18 2015, 9:11 AM

Looking into a fix.

Campbell Barton (campbellbarton) changed the task status from Unknown Status to Resolved by committing rB5dfe88adbaee: Fix T44553: Dyntopo ignores front-face option.May 18 2015, 10:26 AM
Campbell Barton (campbellbarton) added a commit: rB5dfe88adbaee: Fix T44553: Dyntopo ignores front-face option.
perfection cat (sindra1961) added a comment.May 19 2015, 7:36 AM

I think that it still occurs.

Cray.blend248 KBDownload

version 2.74 (sub 5), branch b'master', commit date b'2015-05-18' b'20:10', hash b'65328fa', b'Release'

Antonis Ryakiotakis (psy-fi) added a comment.May 19 2015, 10:25 AM

This is caused by passing NULL to brush_tex sampling, that's where front face is calculated. I seem to remember it was removed to get rid of artifacts but I don't think it's the correct thing to do (and I doubt it was the cause of artifacts without front-face either)

Antonis Ryakiotakis (psy-fi) added a commit: rBdc3533030abe: Fix T44553..May 19 2015, 11:50 AM
perfection cat (sindra1961) added a comment.May 20 2015, 4:36 AM

@Antonis Ryakiotakis (psy-fi):
Thank you.
I think that a problem was improved.

version 2.74 (sub 5), branch b'master', commit date b'2015-05-19' b'21:13', hash b'a1e8547', b'Release'