Blender Foundation: Blender 2.x BF release: Detail: 25597 Issue with Grease Pencil and the Sketching Session.

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[#25597] Issue with Grease Pencil and the Sketching Session.

Date:
2011-01-12 08:02 Priority:
3

State:
Closed

Submitted by:
Richard Stevens (blahblah1981) Assigned to:
Joshua Leung (aligorith)

Category:
None Status:
Fixed / Closed

Relates to: Duplicates:

Patches:

Summary:
Issue with Grease Pencil and the Sketching Session.

Detailed description

Hello,

When using the new Sketching Session feature of the Grease Pencil, a reproducible crash will occur when "undoing" changes.

Steps to reproduce:

1. Start Blender.

2. Check the "Use Sketching Session" checkmark, and then click on "Draw".

3. Draw (a single stroke will suffice).

4. Undo (ctrl-z).

5. Click the "Draw" button -> Crash.

I've reproduced this on both FreeBSD (svn) and also on Windows (Graphicall).

FreeBSD AMD64
SVN v34269
cmake

Windows 7 32 bit
Graphicall v34262

More informaion, running "blender -d", gives the following output during the crash:

Error: Cannot paint on locked layer
Segmentation fault (core dumped)

Debug file attahced.

As an aside, when building blender with the latest svn release, the splash screen does not get updated with the revision that I built against. In this particular case, even though I built revision 34269, the splash screen only shows r34050. Not that it matters much, but it does not always update.

Regards and thanks for such a great program!

Followup

Message

Date: 2011-01-12 09:16
Sender: Joshua Leung
Was the undo done while still in the sketching mode?

If so, this may be tricky to resolve :(

Date: 2011-01-12 09:38
Sender: Richard Stevens
Yes, the undo was done while still in the sketching mode. Exiting the sketching mode then doing the undo works without issue. Blender only crashes when the undo is done while still in sketching mode.

Date: 2011-01-12 12:52
Sender: ronan ducluzeau
ubuntu 10.10 r34279

I have crash whatever I do after the undo (click anywhere or grab the cube).
I noticed that the undo uncheck sketching mode option.

Date: 2011-01-13 07:15
Sender: Joshua Leung
I've added a "fix" for this in SVN. Hopefully it should hold well enough.

Attached Files:

Name	Date	Download

blender_debug_output.txt	2011-01-12 08:02	Download

Changes:

Field	Old Value	Date	By

status_id	Open	2011-01-13 07:15	aligorith
close_date	None	2011-01-13 07:15	aligorith
Status	Investigate	2011-01-13 07:15	aligorith
assigned_to	none	2011-01-12 09:16	aligorith
Status	New	2011-01-12 09:16	aligorith
File Added	14492: blender_debug_output.txt	2011-01-12 08:02	blahblah1981