GEM-dev October 2012

gem-dev@lists.iem.at

8 participants
7 discussions

graphics card switching in OS X and Gem
by Max 20 Nov '12

20 Nov '12

hi list, out of curiosity why the battery live of a macbook pro is so different sometimes i investigated if the graphics card may be the culprit and i installed this nice tiny tool to tell me when which of the two graphics cards is actually used http://gfx.io/ it turned out that my suspicion was correct and it is quite interesting to see which programs cause to use the ati card (discreet) over the energy savy intel (integrated) one. For instance current Opera is forcing the descreete card, so just leaving Opera on in the background causes the battery to drain even though the processor is idle. So i tried this for Pd and found that it is not affecting the graphics card switch until the moment you are loading Gem. So if you are patching with Gem loaded even without the window open the discreete card is used. That's certainly not a really big issue, but i thought it might be interesting enough to share this observation here. It would be desirable to make Gem only switch the graphics card when rendering to the Gemwin is turned on instead of on loading the library. I don't know if that could be an issue on other platforms and hardware as well. max

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video vlc plugin osx
by Joson Android 30 Oct '12

30 Oct '12

Dear Gem devs! I would really like make use of the possibilities of opening video with vlc backend, but i don*t get the vlc plugin to work. i compiled Gem modifying the configure like this: PKG_LIBVLC_CFLAGS=-I/Applications/VLC.app/Contents/MacOS/include PKG_LIBVLC_LIBS="-L/Applications/VLC.app/Contents/MacOS/lib -lvlc" ./configure --with-pd=/Applications/Pd-0.43.1-extended.app/Contents/Resources/include/pd/ --enable-fat-binary=i386 --with-ftgl-includes=/sw/include/ --with-libvlc-includes=-I/Applications/VLC.app/Contents/MacOS/include --with-libvlc-libs="-L/Applications/VLC.app/Contents/MacOS/lib -lvlc" i get the "gem_videoVLC.so" file but when i start pd through terminal i can read: pattern : ./gem_video*.so dylib loading file './gem_videoDarwin.so'! dylib loading file './gem_videoVLC.so'! library loading returned: dlerror 'dlopen(./gem_videoVLC.so, 2): Symbol not found: _libvlc_media_add_option Referenced from: /Library/Pd/Gem/gem_videoVLC.so Expected in: flat namespace in /Library/Pd/Gem/gem_videoVLC.so' and in Pd there is only the darwin backend found when i create [pix_video] [pix_video]: backend #0='Darwin' : darwin dv iidc analog does anyone know how to solve this? i am not experienced with compiling, so i have no clue how to proceed. I found a list discussion where similar problem was discussed, but not solved. i use OSX 10.6.8 and pd-extended-0.43.1 i compiled Gem from git so it shows at pd startup: GEM: ver: 0.93.git 305f6a6 thanks in advance John ps: i love gem, and vlc would make it even lovelier

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Re: [GEM-dev] [ pd-gem-Bugs-3517368 ] gem 0.93 does not play .mpg files on Mac OS X
by IOhannes m zmoelnig 23 Oct '12

23 Oct '12

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2012-10-22 21:15, SourceForge.net wrote: > Bugs item #3517368, was opened at 2012-04-12 19:30 Message > generated for change (Settings changed) made by eighthave You can > respond by visiting: > https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3517368&group_… > > Please note that this message will contain a full copy of the > comment thread, including the initial issue submission, for this > request, not just the latest update. Category: Pixes (pix_ > objects) Group: None Status: Open Resolution: None Priority: 7 > Private: No Submitted By: Hans-Christoph Steiner (eighthave) > Assigned to: Nobody/Anonymous (nobody) >> Summary: gem 0.93 does not play .mpg files on Mac OS X as chris has pointed out, it's probably better to drop mpg support on OSX, rather than trying to fix it (esp. since i don't have too much time right now). it _is_ a regression, but with a low priority. fgmasdr IOhannes -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAlCGYGcACgkQkX2Xpv6ydvRpdwCfUuri4rGDL1LGsWQcb7NTktG1 ZhYAoJlwzq5p7mS6NYQl24SOfDQVbbU7 =cthx -----END PGP SIGNATURE-----

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[ pd-gem-Bugs-3517368 ] gem 0.93 does not play .mpg files on Mac OS X
by SourceForge.net 22 Oct '12

22 Oct '12

Bugs item #3517368, was opened at 2012-04-12 19:30 Message generated for change (Settings changed) made by eighthave You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3517368&group_… Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Pixes (pix_ objects) Group: None Status: Open Resolution: None Priority: 7 Private: No Submitted By: Hans-Christoph Steiner (eighthave) Assigned to: Nobody/Anonymous (nobody) >Summary: gem 0.93 does not play .mpg files on Mac OS X Initial Comment: Pd-extended 0.43.1, 2012-04-02 32-bit on a MacBook Pro 3,1 running Mac OS X 10.6.8/Intel. opening Gem -> examples -> 04.pix -> 05.film, then loading alea.mpg, it tells me the video is "1 frames (320x240) at 1.000000 fps" and procedes to make a fractal-like animation. Full Pd window log and screenshot attached ---------------------------------------------------------------------- Comment By: Hans-Christoph Steiner (eighthave) Date: 2012-09-23 11:00 Message: Just built master and it still doesn't work, did it work for you? But things have changed: now it outputs -1 for the frame count for alea.mpg. Sending [auto 1( doesn't do anything at first, but after a couple seconds, it plays a few frames, then stops again. ---------------------------------------------------------------------- Comment By: Hans-Christoph Steiner (eighthave) Date: 2012-09-23 10:12 Message: I just tested this again to be sure: - Pd-extended 0.42.5 i386 32-bit on Mac OS X 10.6.8/Intel: When I load alea.mpg, it outputs 0 from the total frames outlet but sending [auto 1( it plays fine. - Pd-extended 0.43.1-20120419 i386 32-bit on Mac OS X 10.6.8/Intel: When I load alea.mpg, it outputs 1 from the total frames outlet but sending [auto 1( does not play it. Trying to build Gem from master now, I'll report back on that. ---------------------------------------------------------------------- Comment By: Hans-Christoph Steiner (eighthave) Date: 2012-05-02 06:33 Message: Just did a little more testing. alea.mpg and 64849285.mp4 both play fine in Quicktime and in Pd-extended 0.42.5. It is only Pd-extended 0.43.1 with Gem 0.93 that has this issue ---------------------------------------------------------------------- Comment By: Hans-Christoph Steiner (eighthave) Date: 2012-04-23 11:31 Message: I just tested this using Pd-0.43.1-extended-20120423-ubuntu-oneiric-i386.deb on Ubuntu Oneiric/i386 on my MacBook Pro 3,1 with a nVidia Corporation G84 [GeForce 8600M GT] . It seems to work fine with alea.mpg, /64849285.mp4, and others all work fine. Seems like its an OSX issue. ---------------------------------------------------------------------- Comment By: Hans-Christoph Steiner (eighthave) Date: 2012-04-22 06:34 Message: yes, both play fine. alea.mpg is the same old video that has been included in Gem forever ---------------------------------------------------------------------- Comment By: IOhannes m zmölnig (zmoelnig) Date: 2012-04-22 02:46 Message: can you play these movies with QuickTime? ---------------------------------------------------------------------- Comment By: jack (jackovic) Date: 2012-04-17 15:18 Message: The video works fine on my config. Last Gem from git, Pd 0.43.2test1, ubuntu 11.10. Here i get : [pix_film]: loaded file: /home/jack/Vidéos/filmsPourTests/64849285.mp4 with 359 frames (640x480) at 30.000000 fps So the problem seems to be related to MasOSX only. ++ Jack ---------------------------------------------------------------------- Comment By: Hans-Christoph Steiner (eighthave) Date: 2012-04-17 10:43 Message: I am also seeing the same behavior using a mp4 from the internet: [pix_film]: loaded file: /Users/hans/64849285.mp4 with 1 frames (640x480) at 1.000000 fps This is the video, you can download the .mp4 from the download section of the page: http://vimeo.com/28911883 ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3517368&group_…

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temptation for making Gem build with MinGW
by Hans-Christoph Steiner 22 Oct '12

22 Oct '12

This guy has packaged a lot of libs that Gem needs for MinGW on Ubuntu: https://launchpad.net/~tobydox/+archive/mingw It seems quite conceivable that all of Gem's deps could be packaged this way, then the Gem windows builds could be built on GNU/Linux :-D .hc

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gem port to opengl-es - initial developments..
by dmotd 22 Oct '12

22 Oct '12

hi gem folks, i've had a bit of free time to begin porting gem to opengl-es. i'm building and testing with a nokia-n900/RX51 tablet - a debian based arm arch which supports both opengl-es 1.1 common and opengl-es 2.0. initial hacking is concentrated on opengl-es 1.1, which is generally compatible to the opengl 1.0 spec. opengl-es 2.0 uses shaders to replace fixed functions so there is a lot more work involved in replacing core gem functions. i'm using the egl spec for windowing/surface/buffer support, it is cross platform (although afaik apple uses its own modification 'aegl'). it provides basic functionality for reading and writing gl functions to buffer (along the lines of glx), and like glx still relies on operating system apis to supply other interfaces (keyboard / mouse etc). so far: -- cloned gem git, checkout 0.93 tag, created es branch. using glues for basic (incomplete) glu functionality using libglutes for basic (incomplete) glut functionality added additional autoconf tricks to find and test libraries merged the latest git ES branch of GLEW which has experimental support for GLES/EGL added egl drop in for GemWinCreate successful build against pd-0.43 using enable-Controls and others disabled. -- reports: -- libxxf86vm doesn't seem to work properly on the tablet, so for the time being the window modelines are hard coded. there are some other window manager hints that are specific to the device too. gemwin successfully creates the egl window buffer and rendering context. gem crashes when glClearDepthf and glFrustumf are called (both are floating-point variations to the base GL functions and part of the GL-ES spec). furthermore looking at the output of 'nm -C Gem.pd_linux' shows that these functions are not present in the compiled lib, what does this mean? commenting these functions out allows the gemwin to complete init and create successfully. a call to render causes a crash somewhere in the rendering chain (GemMan::render), but i have had little success debugging this issue. -- notes: -- i'm developing with an eye on the raspberry pi project which should bring affordable opengl-es architecture to a small form factor, perfect for installations of (audio)visual artwork - but there's no reason why any recent (jailbroken) mobile/tablet technologies wouldn't be applicable for creative repurposing. before anyone get's excited, the apple 'app store' is still afaik not compatible with gpl code, so it is unlikely there will be a 'rjdj' style app using gem, or likewise any gem based vj app, i don't think the same can be said for google's android platform, but i'm not a user or developer of said platform (or the fruit for that matter). i am coding on a linux-amd64 pc, cross-compiling in scratchbox and testing on the device, using git/scp as a go-between.. this is a bit cumbersome/inefficient - can anyone suggest a virtual machine image (linux based) that provides a graphical gl-es environment and a minimal editor/ide to build and test with? -- i'll keep everyone up to speed as i make developments, and if anyone can replicate my dev environment and wants to contribute i'll happily push to a public git sooner rather than later. cheers, dmotd

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new libraries on Mac OS X
by Hans-Christoph Steiner 17 Oct '12

17 Oct '12

I just checked out the gem 0.93.3 Debian package and noticed there are a bunch of new build depends. Should I install these on the Mac OS X build servers too? Here's the list: freeglut libdv4 glew sdl libdc1394 libjpeg8 or libjpeg8-turbo .hc

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GEM-dev October 2012