Blender Foundation: Blender 2.x BF release: Detail: 32358 Gui breaks down while using SSS ui menu

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[#32358] Gui breaks down while using SSS ui menu

Date:
2012-08-18 18:11 Priority:
3

State:
Closed

Submitted by:
Yigit Savtur (ygtsvtr) Assigned to:
Brecht Van Lommel (blendix)

Category:
Interface Status:
Fixed / Closed

Relates to: Duplicates:

Patches:

Summary:
Gui breaks down while using SSS ui menu

Detailed description

While playing with Sub surface scattering settings, the gui brakes, but blender keeps working, i copied the event log it seems there is a problem with cycles gui functions...at least thats what i thought i understood please check the pics and txt file... can supply .blend file but i dont think its related to the file this happend back a month ago or so with another SSS enabled file at another computer at my office... restart fixes it. It happend around mid day and i restarted blender without thinking then i thought i should report this so i followed my steps again to re create it and it did after 2 hours... it activates on materials menu while playing with SSS ui stack and then taking a render (F12).

This bug happend to me before but i didnt take the time to report it, i checked the bugs related to interface but didnt see any related bugs.. so im opening a new one..

Followup

Message

Date: 2012-08-21 12:05
Sender: Brecht Van Lommel
It looks like the python context gets broken here, cycles is the last script that gives the error but there's similar errors from other panels too. There was a fix related to this a few months ago, just after the 2.63 release. So it might be fixed already for 2.64 but this has not been released yet, builds are here though:
http://download.blender.org/release/

Could you give me the exact blender version and operating system you used, and verify it in both 2.63 and 2.64?

I tried working in the UI a bit with SSS materials and doing renders, but could not reproduce the issue. It's likely a threading issue, which means that the time when you click or press buttons affects when it happens. If the bug happens in both versions I'd need to have a .blend file and some exact steps to redo the issue, otherwise it's too difficult to investigate with no way to redo.

Date: 2012-08-21 15:40
Sender: Yigit Savtur
ok i will download the latest test release and see if i can recreate it...

i was using 2.63 official release, i dont usually use test builds or builds from GSOC (unless i really need it for something)...

so i will test it for the 2.64 and report back to you....

Date: 2012-08-21 15:43
Sender: Yigit Savtur
sorry forgot the OS and specs...

Windows 7 64 bit
AMD Phenom II x6 1100T
Nvidia 580 GTX
Gskill Ripjaw 16 gb RAM

Date: 2012-08-21 17:59
Sender: Yigit Savtur
i tried to recreate the bug on 2.64 (2.63.17) and did it 2 times.....
at 17:06 i tryed and tryed and nothing happened, then i thought what can trigger this so i started to zoom in and zoom out in render window with ctrl+middle mouse button
and then bug occured... i restarted 2.64 again and after 30 minutes it happened again while i was rolling up and down on the menu with mouse roll.

after that i restarted and tried until 18:45 but couldnt trigger it again... so i dont have any deffinate answer i an give you on how to recreate it..Sorry i uploaded a new picture
if you wanna check out i doubt it will help

Date: 2012-08-21 18:51
Sender: Yigit Savtur
sorry couldnt upload jpg here the dropbox lnk https://www.dropbox.com/s/rqhli29cbecabq9/GUI_BUG_REPORT_2.jpg

Date: 2012-09-24 19:16
Sender: Thomas Dinges
Marking this as ToDo, it's too difficult to reproduce and a simple re-start of Blender fixes it.

Date: 2012-11-16 21:31
Sender: Yigit Savtur
This bug has been fixed by Brecht on Revision 52283

"Python/Context: do not allow any UI context access from threads like render
or baking. This basically means you will only have access to bpy.data and
bpy.context.scene, not current window, active object, etc, as those are not
thread safe anyway and were likely to cause issues already.

This fixes #30858, where the UI would lose buttons due to context getting
corrupted when editing objects in pre/post render or using luxrender. The
context access they did (indirectly) was only using the current scene or
data so they still work."

copy of bug is #30858
Thanks:)

Attached Files:

Name	Date	Download

GUI_crash_log.txt	2012-08-18 18:11	Download
Gui bug.jpg	2012-08-18 18:11	Download

Changes:

Field	Old Value	Date	By

Status	Todo / Closed	2012-11-16 21:40	blendix
status_id	Open	2012-09-24 19:16	dingto
close_date	None	2012-09-24 19:16	dingto
Status	Investigate	2012-09-24 19:16	dingto
Status	New	2012-08-19 01:32	campbellbarton
assigned_to	none	2012-08-19 01:32	campbellbarton
File Added	21768: Gui bug.jpg	2012-08-18 18:11	ygtsvtr
File Added	21769: GUI_crash_log.txt	2012-08-18 18:11	ygtsvtr