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Re: [Inkscape-devel] Multithreading (with TBB)
by Dennis J Lin 14 Aug '07

14 Aug '07

Salutations! (Sorry if the threading is wrong, I'm working with a webmail client right now.) >I think the current status is that we're not very thread safe :) I >guess my concern is that probably the first step for us isn't >implementing TBB. The first step is getting everything cleaned up so >that implementing TBB is a reasonable next step. I agree with you, but I wanted to have something to show, so I decided to tackle the rendering portion (which can take several seconds for a heavily filtered image like car.svgz.) So right now, I have a version that can render to different regions of the screen at the same time (there are locks protecting nr-arena-shape, so there is potential contention.) > >As far as TBB itself goes, is it in any distros? How does it work with >the whole Glib main loop? Perhaps implementing TBB in GTKmm is a good >first step? It might be interesting to incorporate TBB with libsigc++, so that signals can be processed in parallel. Actually, that was what I was thinking about doing when I happened upon Inkscape. >It seems to be one of the trickiest parts, in that we would like to have >the GTK+ GUI responsive while processing is occurring as it would >probably be the biggest perceived gain for users -- but is likely the >most complex part. I think this ties directly into the issues the guys >and Grinnel are seeing. Yeah, I think that eventually I'm going to run into similar issues. For right now, however, I'm just reading the tree (during the idle timer event), so I don't have to worry about updates. As for the future, I think I can have aborted redraws working today or tomorrow (so that the system isn't *less* responsive). Maybe I can get it to the point that we can scroll and redraw at the same time before Friday. Anything fancier, however, is going to require a bunch of careful refactoring... Dennis Lin

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Multithreading (with TBB)
by Dennis J Lin 14 Aug '07

14 Aug '07

Salutations! My name is Dennis Lin, and (until Friday) I'm an intern at Intel. As you may have heard, Intel has released a GPL version of Thread Building Blocks (http://osstbb.intel.com/). In an attempt to gain greater adoption, they have asked me to look into using it to thread existing open-source applications. I've played with the Inkscape source for the last couple of weeks, and I should have some patches soon. I'll try to put out a patch later today to avoid redrawing the entire screen when scrolling diagonally. (This should be independent of scrolling). Where do you prefer your patches? I also have some questions as to how I should proceed. I have found (the hard way) that nr-arena-shape is very *not* threadsafe. However, the Cairo version seems to be a lot better. Is the intent to move everything to Cario in the near future? (I probably don't have enough time remaining to do the conversion, but I might be able to get started, and I can continue on my "free time" after school starts again.) More generally, I have noticed that the sp-canvas and nr-arena-item seem to be scheduled for a rewrite. I have been trying to keep my changes relatively unintrusive, but I was wondering what direction I should be trying to nudge things. Finally, I would like to gauge the interest in this work. What are your sentiments on multithreading in general, and in using TBB to do in particular? Thank you for your time, Dennis Lin

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build failure - paramcolor
by jiho 14 Aug '07

14 Aug '07

I am getting this with latest SVN: depbase=`echo extension/paramcolor.o | sed 's|[^/]*$|.deps/&|;s|\.o $||'`;\ g++ -DHAVE_CONFIG_H -I. -I.. -I/opt/local/include/freetype2 -I/opt/ local/include -D_REENTRANT -DORBIT2=1 -I/opt/local/include/gnome- vfs-2.0 -I/opt/local/lib/gnome-vfs-2.0/include -I/opt/local/include/ gconf/2 -I/opt/local/include/orbit-2.0 -I/opt/local/include/glib-2.0 - I/opt/local/lib/glib-2.0/include -I/opt/local/include -DXTHREADS - I/opt/local/include -I/opt/local/include/freetype2 -I/usr/X11R6/ include -DPNG_NO_MMX_CODE -DXTHREADS -I/opt/local/include/gtk-unix- print-2.0 -I/opt/local/include/gtk-2.0 -I/opt/local/include/atk-1.0 - I/opt/local/include/cairo -I/opt/local/lib/gtk-2.0/include -I/opt/ local/include/pango-1.0 -I/opt/local/include/glib-2.0 -I/opt/local/ lib/glib-2.0/include -I/opt/local/include -I/opt/local/include/ freetype2 -I/opt/local/include/libpng12 -I/usr/X11R6/include - DPOTRACE=\"potrace\" -DPNG_NO_MMX_CODE -DXTHREADS -D_REENTRANT -I/opt/ local/include/gdkmm-2.4 -I/opt/local/lib/gdkmm-2.4/include -I/opt/ local/include/glibmm-2.4 -I/opt/local/lib/glibmm-2.4/include -I/opt/ local/include/pangomm-1.4 -I/opt/local/include/gtk-2.0 -I/opt/local/ lib/gtk-2.0/include -I/opt/local/include/cairomm-1.0 -I/opt/local/ include/sigc++-2.0 -I/opt/local/lib/sigc++-2.0/include -I/opt/local/ include/glib-2.0 -I/opt/local/lib/glib-2.0/include -I/opt/local/ include -I/opt/local/include/pango-1.0 -I/opt/local/include/cairo -I/ opt/local/include/freetype2 -I/opt/local/include/libpng12 -I/usr/ X11R6/include -I/opt/local/include/gtkmm-2.4 -I/opt/local/lib/ gtkmm-2.4/include -I/opt/local/include/atkmm-1.6 -I/opt/local/include/ atk-1.0 -I/opt/local/include/libxml2 -I../cxxtest -I/opt/local/ include -Wall -Wformat-security -W -Wpointer-arith -Wcast-align - Wsign-compare -Woverloaded-virtual -Wswitch -D_FORTIFY_SOURCE=2 -Wno- unused-parameter -O3 -Wall -MT extension/paramcolor.o -MD -MP -MF $depbase.Tpo -c -o extension/paramcolor.o extension/paramcolor.cpp &&\ mv -f $depbase.Tpo $depbase.Po extension/paramcolor.h:26: warning: unused parameter ‘doc’ extension/paramcolor.h:26: warning: unused parameter ‘node’ extension/paramcolor.cpp:43: warning: unused parameter ‘doc’ extension/paramcolor.cpp:43: warning: unused parameter ‘node’ >>>>>>>>>>>>>>> extension/paramcolor.cpp: In constructor ‘Inkscape::Extension::ParamColor::ParamColor(const gchar*, const gchar*, const gchar*, Inkscape::Extension::Parameter::_scope_t, Inkscape::Extension::Extension*, Inkscape::XML::Node*)’: extension/paramcolor.cpp:76: error: ‘strndup’ was not declared in this scope extension/paramcolor.cpp: At global scope: >>>>>>>>>>>>>>> extension/paramcolor.cpp:109: warning: unused parameter ‘doc’ extension/paramcolor.cpp:109: warning: unused parameter ‘node’ extension/paramcolor.cpp: In function ‘void Inkscape::Extension::sp_color_param_changed(SPColorSelector*, GObject*)’: extension/paramcolor.cpp:139: warning: unused variable ‘rgba’ make[2]: *** [extension/paramcolor.o] Error 1 make[1]: *** [all-recursive] Error 1 make: *** [all] Error 2 JiHO --- http://jo.irisson.free.fr/

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Tweak tool on straight lines: "feature" or "bug"
by jiho 14 Aug '07

14 Aug '07

Hello all (and bulia in particular), I just discovered that the Tweak tool as no effect on straight lines (on the middle of straight lines to be exact, because it can move the end nodes). Even when there are nodes in the middle, passing the tweak tool avec a straight line does not deform it. I would expect this: | | | | | | | to become more or less this: | | \ \ | / / | I after passing the Tweak tool over it. Is it a feature? a bug? Cheers, JiHO --- http://jo.irisson.free.fr/

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ImageMagick on win32
by Bob Jamison 14 Aug '07

14 Aug '07

Hi all, I uploaded another lib bundle. This one has the ImageMagick library. It is statically built to avoid the (IMHO) nasty DLL collection you would otherwise need to bundle with Inkscape. People can tweak build.xml to get it to build now, I guess. http://inkscape.modevia.com/win32libs/gtk210-070814.7z bob

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"Inkscape Drawing Program Brings Joy to Many"
by Bryce Harrington 14 Aug '07

14 Aug '07

Inkscape is a free vector drawing program that brings joy and robust drawing tools to millions of people who could never afford Adobe Illustrator. You can use Inkscape for fun or for thousands of different practical purposes including designing your own business card, CD cover, advertising layout, and countless other tasks. http://blogs.pcworld.com/communityvoices/archives/2007/08/inkscape_drawin.h…

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Fwd: Google Summer of Code Mentor Summit
by Bryce Harrington 13 Aug '07

13 Aug '07

Some GSoC info for mentors not on the GSoC list... ---------- Forwarded message ---------- From: LH (Leslie Hawthorn) <lhospo@...400...> Date: Jul 31, 2007 7:05 PM Subject: Google Summer of Code Mentor Summit To: Google Summer of Code Announce <google-summer-of-code-announce@...820...> ***If you are not a mentor or organization administrator, you can stop reading now.*** Hello everyone, Those organizations who were with us last year may remember that we hosted a mentor summit at Google Mountain View following the conclusion for the program. We got a tremendous amount of positive feedback about the summit, and we're pleased to let you know that we'll be doing it again! Further details will be sent to the mentors list, so please stay tuned there for further information. http://groups.google.com/group/google-summer-of-code-mentors-list Cheers, LH

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INKSCAPE being sold on eBay
by Bryce Harrington 13 Aug '07

13 Aug '07

I don't know if this is legal or what, but am passing the word along if anyone would wish to follow up on it (I have no plans to). Bryce ----- Forwarded message from Keith Almond <ss-kalm@...58...> ----- Date: Fri, 10 Aug 2007 05:41:35 -0700 From: Keith Almond <ss-kalm@...58...> To: bryce@...58... Subject: INKSCAPE Message body follows: There are people selling Inkscape and other SOURCEFORGE items on ebay. Is this legal. Not that I want to do it, more that I would like to see it stopped. Check out: http://search.ebay.ca/search/search.dll? from=R40&_trksid=m37&satitle=inkscape&category0=em I would be interested to know if he/she should be doing this. Keith Almond -- This message has been sent to you, a registered SourceForge.net user, by another site user, through the SourceForge.net site. This message has been delivered to your SourceForge.net mail alias. You may reply to this message using the "Reply" feature of your email client, or using the messaging facility of SourceForge.net at: https://sourceforge.net/sendmessage.php?touser=1674196 ----- End forwarded message -----

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NEW: blur export fixed
by bulia byak 12 Aug '07

12 Aug '07

I fixed several often-reported bugs of 0.45: * Exporting blurred objects to bitmap is now much faster. This was particularly slow in 0.45; some files could take hours to export. Now this is fixed, in part by the faster algorithm (contributed by Jasper soon after the 0.45 release) and in part by today's bugfix in the export code. Now even the quite complex files with large blurs export at high resolution in at most a few minutes. * The disappearing of blurred objects in exported bitmaps which happened for large objects in 0.45 is fixed. * The same fix got rid of the rendering artefacts that sometimes appeared on blurred objects during scrolling. While the fix is simple, it's in a sensitive area, so please test rendering and exporting your files with blur and report any problems to me at once! -- bulia byak Inkscape. Draw Freely. http://www.inkscape.org

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Window title not consistent
by Olaf Telshörner 11 Aug '07

11 Aug '07

When you open a document, the window title shows the filename exclusively, e.g. 'foo.svg' When you save a document, the window title shows the full path of the file, e.g. '/bar/foo.svg' I find this behaviour rather confusing and would suggest a more consistent window title. --------------------------------- Jetzt Mails schnell in einem Vorschaufenster überfliegen. Dies und viel mehr bietet das neue Yahoo! Mail.

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