GEM-dev September 2003

gem-dev@lists.iem.at

7 participants
10 discussions

compilling Gem with visual C++
by Cyrille Henry 26 Sep '03

26 Sep '03

Hello, I really love Gem, but I think I miss some object. my last patch use 3000 prim_tri for drowing a moving shape, but it kill my computer CPU. programing complex goes objects can be a good way to improve efficientcy of my patch. So I would like to make some object for gem, but I have somes problems for compilation. I would like to know if there is some kind of m_pd.h that I can use to make gem compatible object? or should I add my object to gem source and compille the whole lib? I didn't succed to compille Gem with visual C++ on win 2K. does a documentation exist how to compile Gem? thank's sorry for my poor english, Cyrille

5 17

releasing GEM: tag "r0-888-pre"
by IOhannes m zmoelnig 24 Sep '03

24 Sep '03

in order to get into releasing (finally), i have branched the Gemsources in the Cvs with the tag "r0-888-pre" if anybody has any bugfixes ready, put them into this branch. i think features are quite ok for a release. windows: could pix_videoDS could be made the standard (alias to [pix_video]; the only important thing would be to add support for all messages that are understood by [pix_video] right now. mfg.as.r IOhannes ps: added some very minor changes to the cvs (like uncommenting the debug.messages in pix_texture)

4 7

wrapping pix_videoDarwin onto sphere or Cone
by ben＠ekran.org 12 Sep '03

12 Sep '03

Hi again, Well I think this is probably another OSX bug specific to my Nvidia Geforce2MX card. I when I try and texture a sphere using pix_videoDarwin the texture seems to consist of a single pixel (the 0,0 pixel actually) And that value is applied to the whole object. I've tried it with pix_texture and pix_texture2 without any changes. It also happens with the cone geo. Note that this does not happen with pix_film. I tried tinkering with pix_coordinates without any luck. [gemhead] | [pix_videoDarwin] | [pix_texture2] | [sphere] Ben

2 2

single buffering
by ben＠ekran.org 12 Sep '03

12 Sep '03

heya all, I was just tinkering with an old patch and I can't get single-buffering to work. It worked before... I'm using Chris's bianry release for OSX from two weeks ago. The window does not complain, seems to enter single-buffering mode. but when I try and draw something (by banging on a gemhead) I get nothing but black. Changing the gemwin color does not render either, all black... Anyhow I hope it gets fixed as its something I often use. Oh and since the gemchains are now PD messages when I break a chain (via spigot for example) do I need to hit stop rendering and start it again for Gem to register the change? (In 0.87 it looks like one had to rerender, on CVS it seems to work) Also is there a way to have a chain keep its texture data after bring broken? Even in CVS it seems breaking a chain will cause it to loose its texture. Thanks ben

4 4

makefile for linux without kalidescope
by ben＠ekran.org 10 Sep '03

10 Sep '03

hey, could someone send me a makefile for gemCVS with the kalidescope stuff removed? I thought I removed it by removing the source files, but PD won't load the lib because it can't find the kalidescope symbols. Thanks Ben

1 0

Model loader under OSX
by ben＠ekran.org 08 Sep '03

08 Sep '03

Hey all, I'm trying to load an obj model into Gem OSX and it just seems to crash. The packaged venus.obj file works fine. Here is the PD output: _glmFindMaterial(): can't find material "vn". _glmFindMaterial(): can't find material "vn". _glmFindMaterial(): can't find material "vn". _glmFindMaterial(): can't find material "vn". _glmFindMaterial(): can't find material "vn". _glmFindMaterial(): can't find material "vn". _glmFindMaterial(): can't find material "vn". _glmFindMaterial(): can't find material "vn". _glmFindMaterial(): can't find material "vn". _glmFindMaterial(): can't find material "vn". _glmFindMaterial(): can't find material "vn". _glmFindMaterial(): can't find material "vn". _glmFindMaterial(): can't find material "vn". *** malloc[500]: error for object 0x20c6690: Incorrect checksum for freed object - object was probably modified after being freed; break at szone_error gdb tells me: Program received signal EXC_BAD_ACCESS, Could not access memory. 0x011f42cc in glmFacetNormals (model=0x20a9600) at /Users/cgc/CVS_Temp/Gem/src/Geos/model_loader.cpp:964 964 in /Users/cgc/CVS_Temp/Gem/src/Geos/model_loader.cpp (gdb) where #0 0x011f42cc in glmFacetNormals (model=0x20a9600) at /Users/cgc/CVS_Temp/Gem/src/Geos/model_loader.cpp:964 watchdog: signaling pd... #1 0x01147b00 in model::openMess(_symbol*) (this=0x20f5530, filename=0x20e6580) at /Users/cgc/CVS_Temp/Gem/src/Geos/model.cpp:158 #2 0x0003394c in pd_typedmess () #3 0x00034970 in outlet_anything () #4 0x00033a68 in pd_typedmess () #5 0x0003698c in binbuf_eval () #6 0x0000977c in message_symbol () #7 0x00034870 in outlet_symbol () #8 0x000336d4 in pd_typedmess () #9 0x0003698c in binbuf_eval () #10 0x0003b0c0 in socketreceiver_read () #11 0x0003abe4 in sys_domicrosleep () #12 0x000396f0 in m_scheduler () #13 0x000027e8 in _start (argc=8, argv=0xbffffd78, envp=0xbffffd9c) at /SourceCache/Csu/Csu-45/crt.c:267 #14 0x00002668 in start () I've attached the offending obj file (I tried three that all don't work) Sorry about the anoying "watchdog" messages interdispersed... but thats another email to pd-dev. Thanks Ben

2 1

Re: [PD] philips 680 webcam and pdp
by IOhannes m zmoelnig 08 Sep '03

08 Sep '03

cgc(a)humboldtblvd.com wrote: > > Ahh I was wondering what that was for... Does this also work or help when using > PAL DV on Linux? i didn't need it (i think). if i use YUV with DV, i get back YVYU (so i use fromYVYU instead of fromYV20) mfg.a.srd IOhannes

1 0

openGL context spanning multiple screens.
by ben＠ekran.org 06 Sep '03

06 Sep '03

Hey all, I've done this in Linux, and assumed It would be no problem in OSX... I want to create a large stereo window, one that spans two screens (dual heads off an ATI card) so that each view has its own screen. The machine will have a ATI PCI card for control display, and the ATI AGP dual-head card. Do I use "secondscreen 1" ? Can I leave the gemwin offset to 0,0 (if the screen is arranged futherest to the left) and just give it dimentions larger than the physical screen so it spills over to fill the second screen? Since Gem does video mode switching on OSX I'm not sure if this will actually work... In linux all the "screens" are just viewports onto one big desktop. So this is what I want: 1024 1024 1024 +--------+--------+--------+ |Screen 1|Screen 2|Screen 3| |OpenGL 1|OpenGL 2| 2D PCI | 768 | | | | +--------+--------+--------+ my patch is on the (primary display) "screen 3" the gemwin has an offset of 0,0 and dimen of 2048x768. I've not been able to test anything because I don't have the dual-head card yet, but I wanted to check with the OSX Devs because it would be a real shame not to be able to do this... Thanks all Ben

2 1

view for gemwin
by ben＠ekran.org 05 Sep '03

05 Sep '03

Hey all, I'm working on a GOP abstraction for the gemwin and am running into a little anoyance. First off the help for "view" in gemwin incorrectly states all the default views for the gemwin. They are correct except the camera is always at 4 in Z, not -4 as stated in the docs. (futher away from the camera is negative) Second I really want standard orbit camera control, where the mouse x-y controls the rotatation of the camera around the scene, usually with the camera pointed at the centre of the scene. I was thinking view may do this, but looks like you have to specify the cartesian coords of the camera. So before I patch it using sph2cart and some luck, what is the likelyhood of the view selector doing that? Here is an early version of the abstraction I'm working on. (It looks perflect in windows, a little wonky in linux, and who knows in OSX!) Thanks Ben

2 2

pix_zoom under OSX
by ben＠ekran.org 02 Sep '03

02 Sep '03

hello does pix_zoom work under OSX? I'v plugged it in, sending values like 0-100 for X and Y and i'm getting no change in the openGL texture. I have it between pix_image and pix_texture2 at the moment. Thanks Ben

1 0

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GEM-dev September 2003