GEM-dev October 2005

gem-dev@lists.iem.at

10 participants
20 discussions

text2d issue
by Tim Blechmann 07 Oct '05

07 Oct '05

hi all, i wrote a gem patch on linux, that behaves differently on windoze: it's basically this setup: |gemhead| | |color| | |text2d| it seems, that i can't change the settings of the |color| object. especially setting the alpha value doesn't work on windows. since it's working fine on my linux machine (gem/cvs, nvidia binary driver) i think it's an issue of either the windows driver on the other machine (iirc an ati dualhead card) or an issue of the gem-0.90.1 binary (haven't been able to test the current cvs ... no development environment on that machine). any ideas? thanks ... tim -- mailto:TimBlechmann@gmx.de ICQ: 96771783 http://www.mokabar.tk latest mp3: kMW.mp3 http://mattin.org/mp3.html latest cd: Goh Lee Kwang & Tim Blechmann: Drone http://www.geocities.com/gohleekwangtimblechmannduo/ After one look at this planet any visitor from outer space would say "I want to see the manager." William S. Burroughs

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Gem rendering
by Christian Veit 06 Oct '05

06 Oct '05

Hello list, I have a problem with rendering in Gem. If i start rendering a simple patch with [pix_film] or [pix_video] pd is using nearly 100% of cpu time and the texture on a [square] is too big and the frames are stumbling. When stopping rendering and starting it again cpu usage is at 70% and performance is ok. If i load a new film there is the same behaivior like starting the first time. In Gem 0.90 there is also very slow response to the mouse and keyboard events. I've checked out a version from CVS there are no problems with the mouse and keyboard events but video playback the first time while rendering is the same stumbling thing. I'm on Linux with an ati radeon mobility x700 graphic card... lg Christian -- 10 GB Mailbox, 100 FreeSMS/Monat http://www.gmx.net/de/go/topmail +++ GMX - die erste Adresse für Mail, Message, More +++

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Re: [GEM-cvs] Gem/src configure.ac,1.21,1.22
by IOhannes m zmoelnig 06 Oct '05

06 Oct '05

IOhannes m zmÃ¶lnig wrote: > Update of /cvsroot/pd-gem/Gem/src > In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv16495 > > Modified Files: > configure.ac > Log Message: > use AC_CHECK_FUNC rather than AC_CHECK_LIB to check for glBindProgram{NV,ARB} since on osX we don't have a library libGL but rather use the OpenGL-framework > > NOTE: the test for glBindProgramNV fails to detect the nvidia-extensions on osX > why ? because you have to explicitely request them by defining GL_NV_vertex_program before including the glext.h file on osX > on linux (mesaGL,...) it is different: the extensions are only included, if GL_NV_vertex_program is NOT already defined does anybody know, why apple's openGL headerfiles behave like that ? why don't they follow SGI's reference implementation ? can this be thought of as a "bug" ? mfg.asdr. IOhannes

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URGENT: clock_delay Hangup??
by B. Bogart 06 Oct '05

06 Oct '05

Hey all, What the heck is going on here, I've been getting a bunch of crashes in Gem on this machine wen it seemed to work fine on my home macihine. Anyhow its a AMD semperon sarge 2.6.8 w/ nvidia drivers. This is the latest crash, Program received signal SIGHUP, Hangup. [Switching to Thread 1076181440 (LWP 3239)] 0x080a3236 in clock_delay () (gdb) bt #0 0x080a3236 in clock_delay () #1 0x080e10aa in x_misc_setup () #2 0x084bc240 in ?? () #3 0x00000000 in ?? () #4 0x40408000 in _classGEMglIndexi () from /usr/lib/pd/extra/Gem.pd_linux Previous frame inner to this frame (corrupt stack?) Any ideas? I'm going to try and drop to Gem0.90 and see if that is any better. It took a huge amount of effort to make Gem texture properly and do video4linux, so I'm worried Gem090 is not working to work, anyhow I'm trying it now. If anyone has an Idea about this let me know. Could it be the nvidia driver somehow? I also got crashes from libGL and pix_flip before. Thanks b.

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Re: [GEM-dev] text2d issue
by IOhannes m zmoelnig 05 Oct '05

05 Oct '05

chris clepper wrote: > 0.90 was released in late May of 2004 and you probably used 2.1.0 or > earlier FTGL - I think 2.0.9 was used for the Mac builds. yes, but 0.90.1 was a special built for w32 with some bug-fixes (avoiding crash when using camera input), so it was compiled later. > > I have to ask why people are using text2d - it's not a particularly > efficient or flexible way to deal with text. yes, i too want to know why people stick to [text2d] ??? mfg.ads.r IOhannes

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URGENT! Gem CVS messing up textures on ATI machine
by B. Bogart 03 Oct '05

03 Oct '05

Hey all, I'm in the thick of installing my art project and am trying to get my patch to work on the linux machine provided from artengine. It is a sarge semperon machine with an accelerated ATI 9600. Problem is I can't get pix_image, pix_multiimage or even pix_video to texture properly. The image seems to be both cropped and stretched to the point of abstraction. the Gem help patches do not work... Attached is a visual illustration, loaded the TEMP2.jpg file here. So I really need this to work, what is going on what do I need to do? I will have to resort to buying a nvidia card, since I suspect it is the graphics card causing this problem. Please reply ASAP as I'm running fast out of time to get this to work. b.

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GLTT anyone ?
by IOhannes m zmoelnig 03 Oct '05

03 Oct '05

i jsut got an email from an "upset customer" who tried to compile Gem on fedora and failed due to code in the GLTT-section of TextBase. now this makes me wonder, whether we really still need the GLTT parts lying aroung, or whether we could completely throw them out of the code-base. nowadays, FTGL is used on linux, osX and w32; i have no idea about irix (and other possible platforms) however, if there are still major distributions around that don't have FTGL-support it might be better to not throw it out. any comments, thoughts, ideas ?? mfg.asd.r IOhannes

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Re: advice pd-gem
by IOhannes m zmoelnig 03 Oct '05

03 Oct '05

hi Teresa Ascencao wrote: > Hi Mark and Iohannes, > > as this is my first time to interactive video and your software, i'm > hoping you could tell me if the two computers i'm considering for > purchase will be powerful enough for my interactive video art > installation. it will consist of a series of twenty 2-minute clips > which will be projected onto a wall, and the video clips will change > with a remote control. i'm looking at a used and a new ibook as mark has retired from active Gem development several years ago... (but it is nice to be reminded of one's roots now and then ;-)) > > USED ibook: > processor - 500 MHz > RAM - 640 K "640K are enough" is this famous b.gates quote. however, i don't believe you here. > bus speed - 66 MHz > hard drive - 30 GB > full specs: http://www.lowendmac.com/pb2/ibook3.html > > NEW ibook: > processor - 1.33 GHz > RAM - 512 K and here i believe you neither. > bus speed - 133 MHz > hard drive - 40 GB > full specs: http://www.apple.com/ibook/specs.html > Gem is based on openGL, which means that you need a graphics card which has openGL-hardware acceleration to get good performance. thus you might experience problems with the USED iBook, but the NEW one should be ok. since i am not using apple-computers i am forwarding this mail to the gem-dev mailing list, where some people using osX are subscribed who might give you better advice than me. and remember that you have to run osX in order to work with pd/gem mfg.ads.r IOhannes

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pix_image crash
by Tim Blechmann 03 Oct '05

03 Oct '05

hi all, pix_image crashes on my machine, while loading a jpeg: (gdb) bt #0 0xb71f2ecb in jpeg_idct_islow () from /usr/lib/libjpeg-mmx.so.62 not really a helpful backtrace, i know, but better than nothing ... cheers .. tim -- mailto:TimBlechmann@gmx.de ICQ: 96771783 http://www.mokabar.tk latest mp3: kMW.mp3 http://mattin.org/mp3.html latest cd: Goh Lee Kwang & Tim Blechmann: Drone http://www.geocities.com/gohleekwangtimblechmannduo/ After one look at this planet any visitor from outer space would say "I want to see the manager." William S. Burroughs

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pix_buffer_read
by Georg Holzmann 02 Oct '05

02 Oct '05

Hallo IOhannes, gem-devs! I'm not shure, but shouldn't be in pix_buffer_read ca. line 140 a img->copy2Image(&m_pixBlock.image); instead of img->copy2ImageStruct(&m_pixBlock.image); ?? (but I'm not so familiar with those methods ...) Thanks, LG Georg

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GEM-dev October 2005