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Maniphest T47890

Masking vertices in weight paint doesn't work with subsurf
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Description

System Information
Windows 7, Nvidia Geforce GT 440
also tested official 2.77 on Linux 64 Bit

Blender Version
Broken: 2.77 22a2853
Worked: (optional) 2.76 48f7dd6

Short description of error
When Subsurf modifier is active, while weight painting, you can't select any vertex after pressing 'V'
Instead, the screen darkens( on 'Window Drawing Method' set to 'Triple Buffering') or glitches a bit until next possible window refresh(either 1 second of wait, or mouse move)

Exact steps for others to reproduce the error
Based on a (as simple as possible) attached .blend file with minimum amount of steps

  1. Open new file
  2. Add 'Subsurf' modifier to a model
  3. Enter 'Weight Paint' mode
  4. Press 'V' to enter 'Vertex Selection masking' mode
  5. Try to select one or more vertices (by right clicking, Circle selecting or Box Selecting)

Revisions and Commits

rB Blender
rB0f501a73ab61 Fix T47890: Vertex mask w/ subsurf select fails

Related Objects

Event Timeline

Szymon Pieczko (Sim_Piko) created this task.Mar 22 2016, 6:10 PM
Szymon Pieczko (Sim_Piko) raised the priority of this task from to 90.
Szymon Pieczko (Sim_Piko) updated the task description. (Show Details)
Szymon Pieczko (Sim_Piko) added a project: BF Blender.
Szymon Pieczko (Sim_Piko) edited a custom field.
Szymon Pieczko (Sim_Piko) added a subscriber: Szymon Pieczko (Sim_Piko).
Campbell Barton (campbellbarton) added a subscriber: Campbell Barton (campbellbarton).EditedMar 23 2016, 3:27 AM

Can't redo this error.
Please include a blend file in the non-working state.

Campbell Barton (campbellbarton) added a comment.Mar 23 2016, 3:27 AM
This comment was removed by Campbell Barton (campbellbarton).
Campbell Barton (campbellbarton) lowered the priority of this task from 90 to 30.Mar 23 2016, 3:27 AM
Olson Burry (olson) added a subscriber: Olson Burry (olson).EditedMar 23 2016, 4:51 AM

weightmaskfail.blend446 KBDownload

Trying to for example deselect the vertices with B + MMB causes the interface to go dark and weird.

Trying to select vertices with RMB after pressing A to deselect doesn't work.

Edit I record video of it happening

weightmask.mp4.zip2 MBDownload

perfection cat (sindra1961) added a subscriber: perfection cat (sindra1961).EditedMar 23 2016, 5:37 AM

circle/box select does not seem to work definitely in weight paint for the mesh object with subserf modifier.
(vertex masking mode)

windows 10 pro 64bits
Blender 2.77 (sub 0) hash: b0a7e77

perfection cat (sindra1961) added a comment.Mar 23 2016, 5:44 AM

2.76b release version: OK
2.77 release version: NG

perfection cat (sindra1961) added a comment.Mar 23 2016, 5:57 AM

2.76b daily build (Hash: 17429dc) : NG

Campbell Barton (campbellbarton) claimed this task.Mar 23 2016, 9:45 AM
Campbell Barton (campbellbarton) raised the priority of this task from 30 to 50.

Confirmed, caused by rB147f7a1e860587a928f465b0b4d0ecf816c997be

Campbell Barton (campbellbarton) added a project: BF Blender: Regressions.Mar 23 2016, 9:46 AM
Campbell Barton (campbellbarton) changed the task status from Unknown Status to Resolved by committing rB0f501a73ab61: Fix T47890: Vertex mask w/ subsurf select fails.Mar 23 2016, 11:01 AM
Campbell Barton (campbellbarton) added a commit: rB0f501a73ab61: Fix T47890: Vertex mask w/ subsurf select fails.