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Maniphest T41257

New paint system always crashes when used on a multi-material mesh.
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Description

System Information
System Information
Win7 64 bit, Ivy Bridge i7 CPU, ATI 7xxx GPU, 16 gigs of RAM

Blender Version
Broken: Hash 939503a
Worked: Hash de379c0

Short description of error
The big commit that brought us the vastly enhanced paint system broke the ability to paint on multi-material meshes, doing so will now cause a crash 100 percent of the time.

Exact steps for others to reproduce the error
Open the attached .blend file (should already be in paint mode and everything) and click. Instead of seeing a nice circle of color, Blender will crash.

Blend

paintCrash.blend545 KBDownload

Revisions and Commits

rB Blender
rBe7dbf553e867 Fix T41257.

Event Timeline

Adam Friesen (ace_dragon) created this task.Jul 30 2014, 9:45 PM
Adam Friesen (ace_dragon) raised the priority of this task from to 90.
Adam Friesen (ace_dragon) updated the task description. (Show Details)
Adam Friesen (ace_dragon) added projects: BF Blender, Sculpt, Paint & Texture.
Adam Friesen (ace_dragon) edited a custom field.
Adam Friesen (ace_dragon) added a subscriber: Adam Friesen (ace_dragon).
Wolfgang Faehnle (mib2berlin) added a subscriber: Wolfgang Faehnle (mib2berlin).Jul 31 2014, 8:20 AM

Can verify on:

Opensuse 13.1/64
Intel i5 3770K
GTX 760 4 GB (Display)
GTX 560Ti 1.28 GB 448 Cores
Driver 340.24

with Blender 2.71.3 Hash 5c3c3ab

read blend: /daten/paintCrash.blend
trigger device changed
25x25 (40x40 tiles)
[New Thread 0x7fffd1895700 (LWP 11921)]
[New Thread 0x7fffd1094700 (LWP 11922)]
[New Thread 0x7fffd0893700 (LWP 11923)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffd1895700 (LWP 11921)]
0x0000000000b91a69 in project_paint_face_paint_image.part.3 ()
(gdb) bt
#0  0x0000000000b91a69 in project_paint_face_paint_image.part.3 ()
#1  0x0000000000b97162 in project_paint_face_init.isra.12 ()
#2  0x0000000000b9a850 in do_projectpaint_thread ()
#3  0x00007ffff63ae0db in start_thread () from /lib64/libpthread.so.0
#4  0x00007ffff246290d in clone () from /lib64/libc.so.6

Cheers, mib

Sergey Sharybin (sergey) assigned this task to Antonis Ryakiotakis (psy-fi).Jul 31 2014, 10:01 AM
Sergey Sharybin (sergey) lowered the priority of this task from 90 to Normal.
Sergey Sharybin (sergey) added a subscriber: Sergey Sharybin (sergey).
Antonis Ryakiotakis (psy-fi) changed the task status from Unknown Status to Resolved.Jul 31 2014, 11:46 AM
Antonis Ryakiotakis (psy-fi) added a commit: rBe7dbf553e867: Fix T41257..

Closed by commit rBe7dbf553e867.