GEM-dev November 2007

gem-dev@lists.iem.at

14 participants
15 discussions

Lua again: now with luaglut/luagl
by Frank Barknecht 28 Nov '07

28 Nov '07

Hi, as I still haven't managed to build LuaGL, I now tested luaglut (0.5) with Gem, downloaded from here: http://lua-users.org/files/wiki_insecure/users/VarolKaptan/ This wins over LuaGL in the makeability contest with a README and a working Makefile, but lacks a bit in documentation. Anyway I still managed to "port" IOhannes' example posted some time ago from LuaGL to luaglut easily, and even extend it. It's attached and the Pd example also compares rendering many lines with luagl over rendering them with Gem and double gemheads. Lua wins by an amazing margin on my machine: Lua is twice as fast as Pd when rendering 1000 lines here. I guess I'll be using luaglut in Pd quite a bit from now on, that's too much of a speedup to ignore for the tiny effort required. ;) But one thing, which maybe only Claude can answer, makes me wonder, probably because I don't yet understand how the combination Lua/Gem/Pd works in general. In the Lua file (attached), I have a method "render()" to do the rendering. This method is called whenever the object receives a "gem_state" in its 1st inlet. This looks a bit like black magic to me: How gets the stuff that M:render() renders with GL-commands finally get attached to the gem-state and transferred into the Gem-window? function M:in_1(sel, atoms) if sel == "gem_state" then M:render(self) end end function M:render(myself) -- Why can't I use "self" directly here?????? -- "self" seems to be a different table inside M:render(). Why? -- myself is not equal to self here max = math.max(myself.max, 1) glBegin(GL_LINES) for i=1,max do glColor3d(math.random(), math.random(), 0) glVertex2d(0, 0) glVertex2d(math.random(-400,400)/100, math.random(-400,400)/100) end glEnd() end And the second black magic bullet that hit me: Normally all methods of a Pd class written in Lua get the same "self" passed. But M:render() seems to be different here: If I try to access the self.max value directly inside M:render(), it is "nil". Printing "self" in various places also gives different table-pointers, so the "self" in M:render() and the "self" in the other methods are different tables. I worked around this by passing the Pd class "self" as "myself", but for one this is awkward, and more importantly: I just don't get what makes M:render() special? Anyone with good explanations? Ciao -- Frank Barknecht _ ______footils.org__

4 5

[ pd-gem-Bugs-1839973 ] videos in [pix_movie] causes strange strobing colors in OSX
by SourceForge.net 28 Nov '07

28 Nov '07

Bugs item #1839973, was opened at 2007-11-27 21:25 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=1839973&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: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Hans-Christoph Steiner (eighthave) Assigned to: Nobody/Anonymous (nobody) Summary: videos in [pix_movie] causes strange strobing colors in OSX Initial Comment: Using the patch 05.movie.pd and the pix_movie-help.pd in Pd-0.39.3-extended and Pd-0.40.3-extended-2007-11-27, I get strange colors strobing over the videos that are playing. See attached screenshots to get an idea of what they look like. pix_film seems to work fine. This is on a MacBook Pro 17" 3rd gen running 10.4.11. This was happening before on 10.4.10 also. Here's the graphics info: Chipset Model: GeForce 8600M GT Type: Display Bus: PCIe PCIe Lane Width: x16 VRAM (Total): 256 MB Vendor: NVIDIA (0x10de) Device ID: 0x0407 Revision ID: 0x00a1 ROM Revision: 3175 Displays: Color LCD: Display Type: LCD Resolution: 1680 x 1050 Depth: 32-bit Color Built-In: Yes Core Image: Hardware Accelerated Main Display: Yes Mirror: Off Online: Yes Quartz Extreme: Supported Display Connector: Status: No display connected ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=1839973&group_…

1 0

segfault when destroing a gem object
by Pepa Henzl 24 Nov '07

24 Nov '07

Hello list, i'm trying to create an object processing the gemlist. everything works fine, but when i'm tryibg to delete object, it causes a segfault. here is the gdb output: Program received signal SIGSEGV, Segmentation fault. outlet_free (x=0x81ac558) at m_obj.c:401 401 if (y->ob_outlet == x) y->ob_outlet = x->o_next; i'm confused a bit. any idea where to start and look for an error? thanks, -- Jozef Henzl http://popcorp.org

2 1

lines with GEM
by Isidro Gonzalez 22 Nov '07

22 Nov '07

Hello: To my knowledge, there are two GEM objects capable to draw a polygon with lines: 1-polygon 2-curve But both are initialized with the number of points of the polygon or curve and you have to send them as many messages for each point(XYZ) as inlets they have. Is there a way to workaround this to avoid a "gigantic spider" of messages if I want to draw (and re-draw) a polygon, say of 50 points...? I mean an object that can draw a curve of any points and accepts a list with ALL the points in the curve... Should exist, but I am not able to find it. Any help will be appreciated. Isi ____________________________________________________________________________________ Be a better pen pal. Text or chat with friends inside Yahoo! Mail. See how. http://overview.mail.yahoo.com/

2 1

Drawing lines in GEM again
by Isidro Gonzalez 22 Nov '07

22 Nov '07

--- Isidro Gonzalez <isidro_gonsoy(a)yahoo.com> wrote: > Date: Wed, 21 Nov 2007 13:44:20 -0800 (PST) > From: Isidro Gonzalez <isidro_gonsoy(a)yahoo.com> > Subject: Drawing lines in GEM > To: pd-list(a)iem.at > Hello: To my knowledge, there are two GEM objects capable to draw a polygon with lines: 1-polygon 2-curve But both are initialized with the number of points of the polygon or curve and you have to send them as many messages for each point(XYZ) as inlets they have. Is there a way to workaround this to avoid a "gigantic spider" of messages if I want to draw (and re-draw) a polygon, say of 50 points...? I mean an object that can draw a curve of any points and accepts a list with ALL the points in the curve... Should exist, but I am not able to find it. Any help will be appreciated. Isi ____________________________________________________________________________________ Get easy, one-click access to your favorites. Make Yahoo! your homepage. http://www.yahoo.com/r/hs

2 1

undefined symbol: _ZN14ParticleAction2dtE
by Roman Haefeli 19 Nov '07

19 Nov '07

after having removed 'Particles/partlib_system.cpp' and recompiled, i get now: /usr/local/lib/pd/extra/Gem.pd_linux: /usr/local/lib/pd/extra/Gem.pd_linux: undefined symbol: _ZN14ParticleAction2dtE ___________________________________________________________ Der frühe Vogel fängt den Wurm. Hier gelangen Sie zum neuen Yahoo! Mail: http://mail.yahoo.de

3 8

build dies on ubuntu gutsy
by Hans-Christoph Steiner 15 Nov '07

15 Nov '07

It seems to work everywhere else, here's the gutsy transcript: g++ -c -g -O2 -fPIC -freg-struct-return -O3 -falign-loops=32 -falign- functions=32 -falign-jumps=32 -funroll-loops -ffast-math -mmmx -I/ usr/include/lqt -I/usr/include/lqt -I/usr/include/avifile-0.7 - I/usr/include/FTGL -I/usr/include/freetype2 -I.. -I/usr/include/ FTGL -I/usr/include/freetype2 -I/home/pd/auto-build/pd-extended/pd/ src partlib_system.cpp -o ../Objects/partlib_system.o make[3]: Leaving directory `/home/pd/auto-build/pd-extended/Gem/src/ Particles' make -C Pixes make[3]: Entering directory `/home/pd/auto-build/pd-extended/Gem/src/ Pixes' In file included from ../Pixes/filmAVIPLAY.h:32, from pix_filmNEW.cpp:27: /usr/include/avifile-0.7/StreamInfo.h:5:2: error: #error Wrong usage of StreamInfo.h - include only infotypes.h! In file included from ../Pixes/filmAVIPLAY.h:32, from filmAVIPLAY.cpp:16: /usr/include/avifile-0.7/StreamInfo.h:5:2: error: #error Wrong usage of StreamInfo.h - include only infotypes.h! make[3]: Leaving directory `/home/pd/auto-build/pd-extended/Gem/src/ Pixes' make[3]: Entering directory `/home/pd/auto-build/pd-extended/Gem/src/ Pixes' In file included from ../Pixes/filmAVIPLAY.h:32, from pix_filmNEW.cpp:27: /usr/include/avifile-0.7/StreamInfo.h:5:2: error: #error Wrong usage of StreamInfo.h - include only infotypes.h! In file included from ../Pixes/filmAVIPLAY.h:32, from filmAVIPLAY.cpp:16: /usr/include/avifile-0.7/StreamInfo.h:5:2: error: #error Wrong usage of StreamInfo.h - include only infotypes.h! g++ -c -g -O2 -fPIC -freg-struct-return -O3 -falign-loops=32 -falign- functions=32 -falign-jumps=32 -funroll-loops -ffast-math -mmmx -I/ usr/include/lqt -I/usr/include/lqt -I/usr/include/avifile-0.7 - I/usr/include/FTGL -I/usr/include/freetype2 -I.. -I/usr/include/ FTGL -I/usr/include/freetype2 -I/home/pd/auto-build/pd-extended/pd/ src DSgrabber.cpp -o ../Objects/DSgrabber.o g++ -c -g -O2 -fPIC -freg-struct-return -O3 -falign-loops=32 -falign- functions=32 -falign-jumps=32 -funroll-loops -ffast-math -mmmx -I/ usr/include/lqt -I/usr/include/lqt -I/usr/include/avifile-0.7 - I/usr/include/FTGL -I/usr/include/freetype2 -I.. -I/usr/include/ FTGL -I/usr/include/freetype2 -I/home/pd/auto-build/pd-extended/pd/ src film.cpp -o ../Objects/film.o g++ -c -g -O2 -fPIC -freg-struct-return -O3 -falign-loops=32 -falign- functions=32 -falign-jumps=32 -funroll-loops -ffast-math -mmmx -I/ usr/include/lqt -I/usr/include/lqt -I/usr/include/avifile-0.7 - I/usr/include/FTGL -I/usr/include/freetype2 -I.. -I/usr/include/ FTGL -I/usr/include/freetype2 -I/home/pd/auto-build/pd-extended/pd/ src filmAVI.cpp -o ../Objects/filmAVI.o g++ -c -g -O2 -fPIC -freg-struct-return -O3 -falign-loops=32 -falign- functions=32 -falign-jumps=32 -funroll-loops -ffast-math -mmmx -I/ usr/include/lqt -I/usr/include/lqt -I/usr/include/avifile-0.7 - I/usr/include/FTGL -I/usr/include/freetype2 -I.. -I/usr/include/ FTGL -I/usr/include/freetype2 -I/home/pd/auto-build/pd-extended/pd/ src filmAVIPLAY.cpp -o ../Objects/filmAVIPLAY.o In file included from ../Pixes/filmAVIPLAY.h:32, from filmAVIPLAY.cpp:16: /usr/include/avifile-0.7/StreamInfo.h:5:2: error: #error Wrong usage of StreamInfo.h - include only infotypes.h! ../Pixes/filmAVIPLAY.h:83: error: ISO C++ forbids declaration of ‘CImage’ with no type ../Pixes/filmAVIPLAY.h:83: error: expected ‘;’ before ‘*’ token filmAVIPLAY.cpp: In constructor ‘filmAVIPLAY::filmAVIPLAY(int)’: filmAVIPLAY.cpp:43: error: ‘m_aviimage’ was not declared in this scope filmAVIPLAY.cpp: In member function ‘virtual pixBlock* filmAVIPLAY::getFrame()’: filmAVIPLAY.cpp:120: error: ‘m_aviimage’ was not declared in this scope filmAVIPLAY.cpp:124: error: ‘m_aviimage’ was not declared in this scope make[3]: *** [filmAVIPLAY.o] Error 1 make[3]: Leaving directory `/home/pd/auto-build/pd-extended/Gem/src/ Pixes' make[2]: *** [Pixes] Error 2 make[2]: Leaving directory `/home/pd/auto-build/pd-extended/Gem/src' make[1]: *** [/home/pd/auto-build/pd-extended/Gem/src/Gem.pd_linux] Error 2 make[1]: Leaving directory `/home/pd/auto-build/pd-extended/packages' ------------------------------------------------------------------------ ---- I have the audacity to believe that peoples everywhere can have three meals a day for their bodies, education and culture for their minds, and dignity, equality and freedom for their spirits. - Martin Luther King, Jr.

3 4

pix_gain mmx code
by Jozef Henzl 12 Nov '07

12 Nov '07

Hello, yesterday I've finally discovered why is pix_gain not working with recent gem cvs build. The mmx code is behaving strangely: 1) I've got only black square as output if i run help patch 2) It seems the code is doing nasty things with the image's memory area - there is no output even if i connect pix_image directly to the pix_draw. 3) if i load an image and THEN connect it to the pix_gain, a nice, but unusable glitch appears. Any mangling with a gain value causes black square. I've got core2 duo processor, pd-0.40 from svn, gem cvs. gcc version 4.2.0 (Gentoo 4.2.0 p1.4) regards, -- Jozef Henzl http://popcorp.org

2 1

pix_video and ffmpeg
by Jozef Henzl 12 Nov '07

12 Nov '07

Oh, and I've got another problem with pix_film and gem 0.90.1-cvs The ffmpeg part is hardly deprecated, because it's using img_resize, which was disabled a few months ago in a libffmpeg. A new approach is to use libswscale. which is a part of the new ffmpeg versions. I was able to hack it myself, but it should be updated in Gem asap. Pd and GEM on recent linux distros will throw a undefined symbol error when loading Gem lib. (there are another issues with type casting, which casues incorrect auto-play function. i can send a patch, but it's a mess so far) regards, -- Jozef Henzl http://popcorp.org

2 1

undefined symbol: __ps
by Roman Haefeli 12 Nov '07

12 Nov '07

hi all i just recompiled gem from a fresh checkout and get an error, when loading gem: /usr/local/lib/pd/extra/Gem.pd_linux: /usr/local/lib/pd/extra/Gem.pd_linux: undefined symbol: __ps i found '__ps' in: Particles/partlib_system.cpp my specs: ubuntu dapper ati radeon mobility 9600 fglrx 7.0.0 i don't know exactly, what information could be relevant to this one. do you need anything more to know? i just got this error the first time now, i didn't get it when compiling gem the last time a few weeks ago. i thought, i'd ask here first before i report it as a bug. is it a bug in gem or a misconfiguration in my system? roman ___________________________________________________________ Telefonate ohne weitere Kosten vom PC zum PC: http://messenger.yahoo.de

1 0

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

GEM-dev November 2007