GEM-dev July 2012

gem-dev@lists.iem.at

7 participants
16 discussions

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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Gem + gem_filmGMERLIN Plugin Crash 10.7.3
by m.e.grimm 31 Jul '12

31 Jul '12

here is the crash report: http://pastebin.com/KF0jDSPu I compiled gem_filmGMERLIN for 64-bit Gem-0.93.3 on 10.7.3 and am trying to use with pix_film. Creating pix_film gives me immediate crash. Not sure if I might be doing something wrong though. All deps for pd-extended builds are met via fink. gem_filmGMERLIN seems to compile fine on its own. Though when I try to compile all of Gem I get: Making all in imageMAGICK /bin/sh ../../libtool --tag=CXX --mode=compile g++ -DHAVE_CONFIG_H -I. -I../../src -I../../src -DPD -I/sw/include/ImageMagick -g -O2 -freg-struct-return -Os -falign-loops -falign-functions -falign-jumps -funroll-loops -ffast-math -mmmx -fpascal-strings -MT gem_imageMAGICK_la-imageMAGICK.lo -MD -MP -MF .deps/gem_imageMAGICK_la-imageMAGICK.Tpo -c -o gem_imageMAGICK_la-imageMAGICK.lo `test -f 'imageMAGICK.cpp' || echo './'`imageMAGICK.cpp libtool: compile: g++ -DHAVE_CONFIG_H -I. -I../../src -I../../src -DPD -I/sw/include/ImageMagick -g -O2 -freg-struct-return -Os -falign-loops -falign-functions -falign-jumps -funroll-loops -ffast-math -mmmx -fpascal-strings -MT gem_imageMAGICK_la-imageMAGICK.lo -MD -MP -MF .deps/gem_imageMAGICK_la-imageMAGICK.Tpo -c imageMAGICK.cpp -fno-common -DPIC -o .libs/gem_imageMAGICK_la-imageMAGICK.o imageMAGICK.cpp: In constructor 'gem::plugins::imageMAGICK::imageMAGICK()': imageMAGICK.cpp:80: error: reference to 'ExceptionInfo' is ambiguous /System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/MachineExceptions.h:196: error: candidates are: typedef union ExceptionInfo ExceptionInfo /sw/include/ImageMagick/magick/magick-type.h:179: error: typedef struct MagickCore::_ExceptionInfo MagickCore::ExceptionInfo imageMAGICK.cpp:80: error: reference to 'ExceptionInfo' is ambiguous /System/Library/Frameworks/CoreServices.framework/Frameworks/CarbonCore.framework/Headers/MachineExceptions.h:196: error: candidates are: typedef union ExceptionInfo ExceptionInfo /sw/include/ImageMagick/magick/magick-type.h:179: error: typedef struct MagickCore::_ExceptionInfo MagickCore::ExceptionInfo imageMAGICK.cpp:80: error: expected `;' before 'exception' imageMAGICK.cpp:81: error: 'exception' was not declared in this scope make[2]: *** [gem_imageMAGICK_la-imageMAGICK.lo] Error 1 make[1]: *** [all-recursive] Error 1 make: *** [all-recursive] Error 1 Not sure if this has something to do with the gmerlin plugin prob though.... thanks! m -- ____________________ m.e.grimm | m.f.a | ed.m. megrimm(a)gmail.com _________________________________

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[ pd-gem-Patches-3511474 ] filmGMERLIN.cpp Apple ColorSpace FIX
by SourceForge.net 31 Jul '12

31 Jul '12

Patches item #3511474, was opened at 2012-03-26 08:52 Message generated for change (Settings changed) made by zmoelnig You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507081&aid=3511474&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: C/C++ code Group: None >Status: Closed >Resolution: Fixed Priority: 5 Private: No Submitted By: megrimm (megrimm) Assigned to: Nobody/Anonymous (nobody) Summary: filmGMERLIN.cpp Apple ColorSpace FIX Initial Comment: Changed colorspace on line 256 to GAVL_UYVY. ---------------------------------------------------------------------- >Comment By: IOhannes m zmölnig (zmoelnig) Date: 2012-07-31 00:54 Message: unfortunately the patches you provide only add debugging output and have nothing todo with GAVL_UYVY... fortunately i had a go on gmerlin-avdecoder on OSX myself, and had to change the colorspace to GAVL_UYVY as well. pushed as commit:5d0d8e2f ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507081&aid=3511474&group_…

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[ pd-gem-Bugs-3541589 ] pix_record codeclist
by SourceForge.net 24 Jul '12

24 Jul '12

Bugs item #3541589, was opened at 2012-07-09 05:59 Message generated for change (Comment added) made by zmoelnig You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3541589&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: linux >Status: Pending >Resolution: Works For Me Priority: 1 Private: No Submitted By: kubriel (kubriel) Assigned to: Nobody/Anonymous (nobody) Summary: pix_record codeclist Initial Comment: there is no output to console in linux when inserting [codeclist( co pix_record in gem from git 3.7.2012. i cant set any other codec as mjpa seen in example, because i dont know its name. ---------------------------------------------------------------------- >Comment By: IOhannes m zmölnig (zmoelnig) Date: 2012-07-23 09:56 Message: actually printout does work, but you have to manually raise the verbosity of Pd to level 2, by adding the following flags when starting Pd: "-verbose -verbose" ---------------------------------------------------------------------- Comment By: IOhannes m zmölnig (zmoelnig) Date: 2012-07-12 07:02 Message: the codeclist is sent to the last outlet of [pix_record], just attach a [print] to it. this allows the codecname not only to be displayed, but also to be used programmatically. in theory, the codeclist should also be posted at a higher verbose level (so you won't get annoyed by all those codecs by default), but it seems that this is currently not working as expected. i'll try to fix that later. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3541589&group_…

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[ pd-gem-Bugs-3510087 ] "Someone sent a bogus pointer to copy2Image" in 4 help patch
by SourceForge.net 23 Jul '12

23 Jul '12

Bugs item #3510087, was opened at 2012-03-22 06:54 Message generated for change (Settings changed) made by zmoelnig You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3510087&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: None Group: any operating system >Status: Closed Resolution: Out of Date Priority: 5 Private: No Submitted By: Hans-Christoph Steiner (eighthave) Assigned to: Nobody/Anonymous (nobody) Summary: "Someone sent a bogus pointer to copy2Image" in 4 help patch Initial Comment: From the load_every_help.py script run on Mac OS X 10.6.8 using Pd-extended 0.43.1 2012-03-10: Gem/pix_multiimage-help.pd Gem/pix_set-help.pd pix_sig2pix~-help.pd pix_snap-help.pd error: GEM: Someone sent a bogus pointer to copy2Image Here's the entire log. http://autobuild.puredata.info/auto-build/2012-03-21/logs/load_every_help_p… ---------------------------------------------------------------------- Comment By: IOhannes m zmölnig (zmoelnig) Date: 2012-03-25 12:56 Message: it seems like all of these have been fixed in the git version of Gem a while ago. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3510087&group_…

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Problem with glitching on OS X at high frame rates
by Theo Burt 19 Jul '12

19 Jul '12

Hi, me and a friend of mine do a lot of live audio-video performance, professionally, all using pd/gem as an environment. We both use Macbook Pros (different models), and for the last couple of years we've been having a serious problem which we now suspect is something to do with GEM/PD, rather than, for example, the graphics cards or drivers. The problem occurs when running at higher frame rates - it is highly preferable for us to run at 60 frames per second, because (1) it syncs with the refresh rates of most projectors and seems to produce much smoother/more regular movement, and (2) often we are using very precise, high frequency flashing, for optical effects, that we need to be able to sync exactly with screen refreshes. We are generally running the gem window in a second screen (such as a monitor or projector), but it happens when running on one screen too. As soon as we run at 60 frames per second (or near it), glitching starts to occur frequently in the audio, and the audio goes out of sync with GEM. While the glitching is occurring, processes in PD and GEM jerk along, pausing frequently. To resolve it (temporarily), the audio has to be reset in PD (by reselecting the audio device). The glitching then goes away and everything runs smoothly, but it returns spontaneously after a short time. The glitching is also exacerbated by moving windows around on the screen. It might be worth noting that the same patch running on the very same machine in Windows XP (using bootcamp) does not have this problem. We have different GPUs, mine is a Nvidia 9600m GT, and his was an ATI of some sort. We are using very simple, geometric graphics, and are not approaching the processing limits of the GPUs at all (if I do push the graphics card very hard, I notice that frames are skipped rather than glitching occurring). I also note that it happens equally when there is low CPU activity, so it's not related to that. My friend has just purchased a new Macbook Pro, yesterday with a 60% more powerful Nvidia GPU, and unfortunately the glitching is still occurring. It occurs in OS X Lion, and also was happening in Snow Leopard. We've tried disabling power management on the GPU, and this doesn't help either. I've looked through the gem code in an attempt to try and understand what is happening, but I am afraid it is beyond me! Does anyone have any idea at all what the problem could be? It would make such a huge difference to us if we could resolve it. Thanks very much for any help in advance (and for developing GEM in the first place) All the best, Theo

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Re: [GEM-dev] [ pd-gem-Bugs-3541059 ] pix_film crash when opening 2 file on the same time
by IOhannes m zmoelnig 13 Jul '12

13 Jul '12

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2012-07-11 12:35, SourceForge.net wrote: > > Message: i confirm the fix thanks > > ---------------------------------------------------------------------- > > Comment By: IOhannes m zmölnig (zmoelnig) Date: 2012-07-11 00:15 > > Message: shall be fixed with 613c7d6 > > ---------------------------------------------------------------------- > > Comment By: jack (jackovic) Date: 2012-07-07 06:23 > > after committing the fix, i rewrote it differently. could anybody confirm that it still works? fgamsdr IOhannes -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk/+1LsACgkQkX2Xpv6ydvQO6wCaA9wbcxhtRzdqA4Kb4m4hn1Nj 5c0AmQHWbWcNmqFYBd0+ak2oXV7P5a8O =cDWy -----END PGP SIGNATURE-----

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[ pd-gem-Bugs-3541589 ] pix_record codeclist
by SourceForge.net 12 Jul '12

12 Jul '12

Bugs item #3541589, was opened at 2012-07-09 05:59 Message generated for change (Comment added) made by zmoelnig You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3541589&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: linux Status: Open Resolution: None >Priority: 1 Private: No Submitted By: kubriel (kubriel) Assigned to: Nobody/Anonymous (nobody) Summary: pix_record codeclist Initial Comment: there is no output to console in linux when inserting [codeclist( co pix_record in gem from git 3.7.2012. i cant set any other codec as mjpa seen in example, because i dont know its name. ---------------------------------------------------------------------- >Comment By: IOhannes m zmölnig (zmoelnig) Date: 2012-07-12 07:02 Message: the codeclist is sent to the last outlet of [pix_record], just attach a [print] to it. this allows the codecname not only to be displayed, but also to be used programmatically. in theory, the codeclist should also be posted at a higher verbose level (so you won't get annoyed by all those codecs by default), but it seems that this is currently not working as expected. i'll try to fix that later. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3541589&group_…

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[ pd-gem-Bugs-3541059 ] pix_film crash when opening 2 file on the same time
by SourceForge.net 11 Jul '12

11 Jul '12

Bugs item #3541059, was opened at 2012-07-07 05:24 Message generated for change (Settings changed) made by nusmuk You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3541059&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: Closed Resolution: Fixed Priority: 5 Private: No Submitted By: Cyrille Henry (nusmuk) Assigned to: Nobody/Anonymous (nobody) Summary: pix_film crash when opening 2 file on the same time Initial Comment: sending 2 open message to pix_film on the same logical time crash pd. see patch. this was confirmed on 3 different computer. (ubuntu 10.04 and ubuntu 12.04), using recent Gem from git gdb backtrace : .#0 0x00007ffff74613c4 in pthread_mutex_lock () from /lib/libpthread.so.0 #1 0x00007fffef21e702 in pix_film::grabThread (you=<value optimized out>) at pix_film.cpp:160 #2 0x00007ffff745e9ca in start_thread () from /lib/libpthread.so.0 #3 0x00007ffff6fb3cdd in clone () from /lib/libc.so.6 #4 0x0000000000000000 in ?? () ---------------------------------------------------------------------- Comment By: Nobody/Anonymous (nobody) Date: 2012-07-11 03:33 Message: i confirm the fix thanks ---------------------------------------------------------------------- Comment By: IOhannes m zmölnig (zmoelnig) Date: 2012-07-11 00:15 Message: shall be fixed with 613c7d6 ---------------------------------------------------------------------- Comment By: jack (jackovic) Date: 2012-07-07 06:23 Message: I can confirm that on Ubuntu 12.04 with Gem ver: 0.93.git 841057e on Pd 0.43.2test1. ++ Jack ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3541059&group_…

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[ pd-gem-Bugs-3541059 ] pix_film crash when opening 2 file on the same time
by SourceForge.net 11 Jul '12

11 Jul '12

Bugs item #3541059, was opened at 2012-07-07 05:24 Message generated for change (Comment added) made by nobody You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3541059&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: Pending Resolution: Fixed Priority: 5 Private: No Submitted By: Cyrille Henry (nusmuk) Assigned to: Nobody/Anonymous (nobody) Summary: pix_film crash when opening 2 file on the same time Initial Comment: sending 2 open message to pix_film on the same logical time crash pd. see patch. this was confirmed on 3 different computer. (ubuntu 10.04 and ubuntu 12.04), using recent Gem from git gdb backtrace : .#0 0x00007ffff74613c4 in pthread_mutex_lock () from /lib/libpthread.so.0 #1 0x00007fffef21e702 in pix_film::grabThread (you=<value optimized out>) at pix_film.cpp:160 #2 0x00007ffff745e9ca in start_thread () from /lib/libpthread.so.0 #3 0x00007ffff6fb3cdd in clone () from /lib/libc.so.6 #4 0x0000000000000000 in ?? () ---------------------------------------------------------------------- Comment By: Nobody/Anonymous (nobody) Date: 2012-07-11 03:33 Message: i confirm the fix thanks ---------------------------------------------------------------------- Comment By: IOhannes m zmölnig (zmoelnig) Date: 2012-07-11 00:15 Message: shall be fixed with 613c7d6 ---------------------------------------------------------------------- Comment By: jack (jackovic) Date: 2012-07-07 06:23 Message: I can confirm that on Ubuntu 12.04 with Gem ver: 0.93.git 841057e on Pd 0.43.2test1. ++ Jack ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3541059&group_…

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GEM-dev July 2012