uvmap causes crash when entering texture paint mode #45514

New Issue

Daniel Grauer · 2015-07-21T16:39:32+02:00

Daniel Grauer commented

2015-07-21 16:39:32 +02:00

System Information
Operating system and graphics card
OS: windows 8.1 64bit
GPU: NVIDIA GTX 860m

Blender Version
Broken:
version 2.75 (sub 2), branch b'master', commit date b'2015-07-17' b'13:15', hash b'955c13d'
Worked: (optional)

Short description of error
when switching to texture paint mode blender crashes. i could pin it down to the uv map, when i remove it i can enter texture paint mode without crashing.

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

blend file: uvmap_crash.blend

open the blend file
switch to texture paint mode with the object selected
blender crashes

crashlog:

# Blender 2.75 (sub 2), Commit date: 2015-07-21 11:49, Hash 9ae39a1
bpy.ops.view3d.layers(nr=5, extend=False)  # Operator
bpy.context.scene.layers[10] = True  # Property
bpy.context.scene.layers[0] = True  # Property
bpy.ops.object.delete(use_global=False)  # Operator
bpy.ops.object.delete(use_global=False)  # Operator
bpy.context.space_data.recent_folders_active = 0  # Property
bpy.ops.object.delete(use_global=False)  # Operator
bpy.ops.object.delete(use_global=False)  # Operator
bpy.context.space_data.context = 'MODIFIER'  # Property
bpy.ops.object.modifier_remove(modifier="Shrinkwrap")  # Operator
bpy.ops.object.modifier_remove(modifier="Lattice")  # Operator
bpy.ops.paint.texture_paint_toggle()  # Operator

# backtrace
35: BLI_system_backtrace - 0xF2304F0
34: blender_crash_handler_backtrace - 0xDFCBC60
33: blender_crash_handler - 0xDFCBCB0
32: windows_exception_handler - 0xDFCBF30
31: UnhandledExceptionFilter - 0x715F1AD0
30: memset - 0x742C5140
29: _C_specific_handler - 0x742B2800
28: _chkstk - 0x742C3E70
27: RtlRaiseException - 0x74283920
26: KiUserExceptionDispatcher - 0x742C3060
25: copy_v2_v2 - 0xED5FA10
24: cdDM_buffer_copy_uv_texpaint - 0xED6B0D0
23: cdDM_copy_gpu_data - 0xED6B9B0
22: gpu_buffer_setup - 0xEAB4710
21: gpu_buffer_setup_type - 0xEAB4BA0
20: gpu_buffer_setup_common - 0xEAB4C60
19: GPU_texpaint_uv_setup - 0xEAAF550
18: cdDM_drawFacesTex_common - 0xED67830
17: cdDM_drawFacesTex - 0xED67EF0
16: draw_mesh_textured_old - 0xE190170
15: draw_mesh_textured - 0xE18C2F0
14: draw_mesh_fancy - 0xE148E50
13: draw_mesh_object - 0xE149E10
12: draw_object - 0xE137610
11: view3d_draw_objects - 0xE124F00
10: view3d_main_area_draw_objects - 0xE126E50
9: view3d_main_area_draw - 0xE11C310
8: ED_region_do_draw - 0xE4AA9D0
7: wm_method_draw_triple - 0xE002590
6: wm_draw_update - 0xE000610
5: WM_main - 0xDFD0FB0
4: main - 0xDFCF4D0
3: __tmainCRTStartup - 0x125E80F0
2: mainCRTStartup - 0x125E8310
1: BaseThreadInitThunk - 0x722113B0
0: RtlUserThreadStart - 0x74245410

**System Information** Operating system and graphics card OS: windows 8.1 64bit GPU: NVIDIA GTX 860m **Blender Version** Broken: version 2.75 (sub 2), branch b'master', commit date b'2015-07-17' b'13:15', hash b'955c13d' Worked: (optional) **Short description of error** when switching to texture paint mode blender crashes. i could pin it down to the uv map, when i remove it i can enter texture paint mode without crashing. **Exact steps for others to reproduce the error** Based on a (as simple as possible) attached .blend file with minimum amount of steps blend file: [uvmap_crash.blend](https://archive.blender.org/developer/F211345/uvmap_crash.blend) 1. open the blend file 2. switch to texture paint mode with the object selected 3. blender crashes crashlog: ``` # Blender 2.75 (sub 2), Commit date: 2015-07-21 11:49, Hash 9ae39a1 bpy.ops.view3d.layers(nr=5, extend=False) # Operator bpy.context.scene.layers[10] = True # Property bpy.context.scene.layers[0] = True # Property bpy.ops.object.delete(use_global=False) # Operator bpy.ops.object.delete(use_global=False) # Operator bpy.context.space_data.recent_folders_active = 0 # Property bpy.ops.object.delete(use_global=False) # Operator bpy.ops.object.delete(use_global=False) # Operator bpy.context.space_data.context = 'MODIFIER' # Property bpy.ops.object.modifier_remove(modifier="Shrinkwrap") # Operator bpy.ops.object.modifier_remove(modifier="Lattice") # Operator bpy.ops.paint.texture_paint_toggle() # Operator # backtrace 35: BLI_system_backtrace - 0xF2304F0 34: blender_crash_handler_backtrace - 0xDFCBC60 33: blender_crash_handler - 0xDFCBCB0 32: windows_exception_handler - 0xDFCBF30 31: UnhandledExceptionFilter - 0x715F1AD0 30: memset - 0x742C5140 29: _C_specific_handler - 0x742B2800 28: _chkstk - 0x742C3E70 27: RtlRaiseException - 0x74283920 26: KiUserExceptionDispatcher - 0x742C3060 25: copy_v2_v2 - 0xED5FA10 24: cdDM_buffer_copy_uv_texpaint - 0xED6B0D0 23: cdDM_copy_gpu_data - 0xED6B9B0 22: gpu_buffer_setup - 0xEAB4710 21: gpu_buffer_setup_type - 0xEAB4BA0 20: gpu_buffer_setup_common - 0xEAB4C60 19: GPU_texpaint_uv_setup - 0xEAAF550 18: cdDM_drawFacesTex_common - 0xED67830 17: cdDM_drawFacesTex - 0xED67EF0 16: draw_mesh_textured_old - 0xE190170 15: draw_mesh_textured - 0xE18C2F0 14: draw_mesh_fancy - 0xE148E50 13: draw_mesh_object - 0xE149E10 12: draw_object - 0xE137610 11: view3d_draw_objects - 0xE124F00 10: view3d_main_area_draw_objects - 0xE126E50 9: view3d_main_area_draw - 0xE11C310 8: ED_region_do_draw - 0xE4AA9D0 7: wm_method_draw_triple - 0xE002590 6: wm_draw_update - 0xE000610 5: WM_main - 0xDFD0FB0 4: main - 0xDFCF4D0 3: __tmainCRTStartup - 0x125E80F0 2: mainCRTStartup - 0x125E8310 1: BaseThreadInitThunk - 0x722113B0 0: RtlUserThreadStart - 0x74245410 ```

Daniel Grauer commented

2015-07-21 16:39:32 +02:00

Changed status to: 'Open'

Daniel Grauer commented

2015-07-21 16:39:32 +02:00

Added subscriber: @DanielGrauer

Aaron Carlisle commented

2015-07-21 19:31:42 +02:00

Added subscriber: @Blendify

Aaron Carlisle commented

2015-07-21 19:31:42 +02:00

Can confirm

Antonis Ryakiotakis commented

2015-07-24 16:11:37 +02:00

Added subscriber: @Psy-Fi

Antonis Ryakiotakis self-assigned this 2015-07-24 16:11:37 +02:00

Antonis Ryakiotakis commented

2015-07-24 16:11:37 +02:00

Confirmed, thanks for the report.

Antonis Ryakiotakis commented

2015-07-24 16:54:00 +02:00

I would be very interested to know how this file was created.

Antonis Ryakiotakis commented

2015-07-24 16:57:12 +02:00

The file even crashes on 2.75 official. It's caused by the stencil layer not being there (usually it's the same as the UV layer). Also looks like the stencil layer index is set to 2, while the mesh only has one UV layer. This should be impossible normally. I can add checks in the code to ensure it is within bounds, but best would be to know what caused the file to have this behaviour in the first place.

perfection cat commented

2015-07-27 08:01:58 +02:00

Added subscriber: @sindra1961

perfection cat commented

2015-07-27 08:01:58 +02:00

Deletion of Shrinkwrap and Lattice modifier is recorded in crashlog attached in detail, but such modifier is not set in attached .blend file.
Is crashlog a thing recorded with attached .blend file?

Deletion of Shrinkwrap and Lattice modifier is recorded in crashlog attached in detail, but such modifier is not set in attached .blend file. Is crashlog a thing recorded with attached .blend file?

Daniel Grauer commented

2015-07-27 10:28:34 +02:00

Added subscriber: @antony-2

Daniel Grauer commented

2015-07-27 10:28:34 +02:00

@antony-2: i will see if i can figure out what happened there
@perfection cat: it is the same blend file, i just stripped it down because i can not upload the full scene. but since it also happens when the modifiers are removed i dont think they are relevant to the problem.

@antony-2: i will see if i can figure out what happened there @perfection cat: it is the same blend file, i just stripped it down because i can not upload the full scene. but since it also happens when the modifiers are removed i dont think they are relevant to the problem.

Daniel Grauer changed title from ~~uvmaap causes crash when entering texture paint mode~~ to uvmap causes crash when entering texture paint mode

2015-07-27 10:29:06 +02:00

Daniel Grauer commented

2015-07-28 09:31:09 +02:00

so i looked into the scene to see how this came to be, and it has a long history. Models in the scene have been made in the age of 2.49 and were at some point ported to 2.5+, there was a lot of stuff like multiple uvmaps, drivers, and deformation setups with lattices and such that have been removed over the years and also stencil layers.
my best guess is that we manually assigned a uvmap to a stencil layer which later got removed and somehow created this special case.

so i looked into the scene to see how this came to be, and it has a long history. Models in the scene have been made in the age of 2.49 and were at some point ported to 2.5+, there was a lot of stuff like multiple uvmaps, drivers, and deformation setups with lattices and such that have been removed over the years and also stencil layers. my best guess is that we manually assigned a uvmap to a stencil layer which later got removed and somehow created this special case.

Antonis Ryakiotakis commented

2015-07-28 10:25:12 +02:00

How was the stencil layer assigned manually? was it through a python script?

The fix I will attempt will do two things:

Block the code path that caused the issue from doing it (if it still exists, since this is such an old file, and only if you remember how it was done in the first place)
Add code to the mesh_validate function to fix stencil indices. Then you'll have to run the function in the text editor. This should fix any invalid indices of stencils and you should be able to work on the file normally. I will post details here when it's ready.

How was the stencil layer assigned manually? was it through a python script? The fix I will attempt will do two things: 1) Block the code path that caused the issue from doing it (if it still exists, since this is such an old file, and only if you remember how it was done in the first place) 2) Add code to the mesh_validate function to fix stencil indices. Then you'll have to run the function in the text editor. This should fix any invalid indices of stencils and you should be able to work on the file normally. I will post details here when it's ready.

Daniel Grauer commented

2015-07-28 10:56:03 +02:00

i think it was manually, i cant remember ever using a script for stencils.

Daniel Grauer commented

2015-07-31 15:15:42 +02:00

This comment was removed by @DanielGrauer

*This comment was removed by @DanielGrauer*

blender-admin commented

2015-08-20 09:35:14 +02:00

This issue was referenced by 67e32b3195

This issue was referenced by 67e32b31951b8b570148bd8b456afac27bb9645a

Antonis Ryakiotakis commented

2015-08-20 09:35:41 +02:00

Changed status from 'Open' to: 'Resolved'

Antonis Ryakiotakis closed this issue

2015-08-20 09:35:41 +02:00

Antonis Ryakiotakis commented

2015-08-20 09:38:28 +02:00

Since there is no recollection of how the file was produced and there's such a complicated history, we can do little to fix the real cause of the issue. There is a big chance this won't happen with regular use of recent versions though.

To fix the file, I have added functionality in mesh validation that fixes the invalid indices for you.
Just go to a text editor or a console and run this python script:

import bpy

for me in bpy.data.meshes:
    me.validate()

Since there is no recollection of how the file was produced and there's such a complicated history, we can do little to fix the real cause of the issue. There is a big chance this won't happen with regular use of recent versions though. To fix the file, I have added functionality in mesh validation that fixes the invalid indices for you. Just go to a text editor or a console and run this python script: ``` import bpy for me in bpy.data.meshes: me.validate() ```

Daniel Grauer commented

2015-08-20 09:43:02 +02:00

thanks a lot for adding the functionality! i also dont think this will happen with recent files and probably not possible to reproduce this without messing with very old blender versions.

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uvmap causes crash when entering texture paint mode #45514