GEM-dev August 2006

gem-dev@lists.iem.at

11 participants
19 discussions

GemException changes not approved by MSVC 2003
by chris clepper 14 Sep '06

14 Sep '06

I haven't updated the Base classes in about two weeks and the change made to GemException has made MSVC very unhappy. It throws a warning about public std::exception for each and every class compiled. The warning is C4275: no dll-interface class 'exception' used as base for dll-interface class 'GemException'. Webpage here: http://msdn2.microsoft.com/en-us/library/3tdb471s.aspx I have no idea what this really means. MS doesn't have a runtime exception for use with DLLs? Should I just do the pragma to shut the warning off? cgc

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multitexture unit shader issues
by chris clepper 05 Sep '06

05 Sep '06

It looks like the key to getting shaders working with multiple texture units has to do with the texture target geometry knowing about the proper texture coordinates. A while ago SetVertex() was modified to set up the first 8 multitexture coordinates. Right now only square uses this call as far as I can tell. All of the Geos could be changed to use this function or a different SetTexCoord() one could be made to deal with the glMultiTexCoord2fARB calls. The code would be pretty ugly if each Geo added 7 more texture calls per vertex otherwise. Also, I quickly added a 'texunit' message and glActiveTextureARB() call the pix_texture which allows for the use of multiple texture units in shaders without pix_multitexture. I don't know if this is duplicate work or goes against plan, but it seems pretty straightforward when working with shaders. cgc

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glsl and texture
by cyrille henry 30 Aug '06

30 Aug '06

hello, i'm trying to learn glsl. I can't find how to use texture in the fragment shader. does anyone have an exemple how to load texture with GEM glsl? thanks Cyrille

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gem cvs on linux tries to compile filmDS
by B. Bogart 27 Aug '06

27 Aug '06

Hey all, Just letting you know for some reason compiling gem on linux (etch) tried to compile filmDS... so I moved all the *DS* stuff out of the way. filmDS.cpp: In constructor 'filmDS::filmDS(int)': filmDS.cpp:113: error: no matching function for call to 'filmDS::~filmDS()' ../Pixes/filmDS.h:47: note: candidates are: virtual filmDS::~filmDS() filmDS.cpp:114: error: expected `;' before '{' token filmDS.cpp:154: error: expected `}' at end of input make[1]: *** [filmDS.o] Error 1 make[1]: *** Waiting for unfinished jobs.... make[1]: Leaving directory `/home/bbogart/pd-stuff/cvs/Gem/src/Pixes' make: *** [Pixes] Error 2 oops, then it tries the darwin stuff: g++ -c -fPIC -g -O2 -freg-struct-return -O3 -fno-builtin -falign-loops=16 -funroll-loops -ffast-math -mmmx -msse2 -I/usr/include/ffmpeg -I/usr/include/lqt -I/usr/include/lqt -I/usr/include/avifile-0.7 -I.. pix_filmDarwin.cpp -o pix_filmDarwin.o make[1]: Leaving directory `/home/bbogart/pd-stuff/cvs/Gem/src/Pixes' make: *** [Pixes] Error 2 so moved *Darwin* out of the way Ah and of course the NEW stuff: make[1]: *** [pix_filmNEW.o] Error 1 make[1]: *** Waiting for unfinished jobs.... make[1]: Leaving directory `/home/bbogart/pd-stuff/cvs/Gem/src/Pixes' make: *** [Pixes] Error 2 then it compiles fine. Just letting ya'll know. .b.

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autoconf os-X (working)
by IOhannes m zmoelnig 26 Aug '06

26 Aug '06

hi. i recently played a bit with a G5 and tried to compile Gem on OS-X (10.4.7) via the autoconf system. good news: basically changing the line dealing with "-bundle" in configure(.ac) did the trick; it is already in the CVS (plus some minor changes, which should the use of configure a bit simpler; like "--with-pd" not pointing to the pd-executable anymore, but to the base path where both the pd-executable/library (./bin) and the headers (./src) can be found) i only forgot about ftgl-support, which i did today, trying to make everything from the command-line (which might - or not - be important for the hans's autobuild system; basically i believe that freetype2 and ftgl should not be included in the nightly builds, as they are virtually never-changing; so they could be built via some IDE like xcode once and then the building of Gem would run without gui) all in all, it was not hard to do, and here is how i did it: ### START ## i have ${GEMROOT}/Gem/src/ and ${GEMROOT}/GemLibs/ $> export GEMROOT=/Users/zmoelnig/src/pd-gem ## ${PDPATH}/src/m_pd.h $> export PDPATH=/Users/zmoelnig/src/pure-data/pd ## openGL-headers are in ${X11OPENGL}/GL/gl.h $> export X11OPENGL=/Developer/SDKs/MacOSX10.4u.sdk/usr/X11R6/ $> cd ${GEMROOT}/GemLibs ## freetype2 $> wget http://download.savannah.gnu.org/releases/freetype/freetype-2.2.1.tar.bz2 $> tar xvzf freetype-2.2.1.tar.bz2 $> cd ${GEMROOT}/freetype-2.2.1/ $> ./configure $> make ## this installs freetype2 into /usr/local/: $> sudo make install ## since FTGL's build system needs to run freetype-config, we ## need /usr/local/bin in our path $> export PATH=$PATH:/usr/local/bin ## FTGL $> wget http://opengl.geek.nz/ftgl/ftgl-2.1.2.tar.gz $> tar xvzf ftgl-2.1.2.tar.gz $> cd ${GEMROOT}/FTGL/unix $> ./configure --with-ft-prefix=/usr/local/ --with-gl-inc=${X11OPENGL}/include/ --with-gl-lib=${X11OPENGL}/lib/ $> make ## allright, that's it; we don't have to do the above for months, ## probably years! ## here's how i compiled Gem with the above settings $> export PKG_FTGL_CFLAGS="-I${GEMROOT}/GemLibs/FTGL/include/ $(freetype-config --cflags)" $> export PKG_FTGL_LIBS="$(freetype-config --libs) ${GEMLIBS}/GemLibs/FTGL/unix/src/.libs/libftgl.a" $> ./configure --with-pd=${PDPATH} $> make ### END (actually i didn't use "export" for the PKG_FTGL_... vars, but set them in the same line as calling configure: $> PKG_FTGL_CFLAGS="-I${GEMROOT}/GemLibs/FTGL/include/ $(freetype-config --cflags)" PKG_FTGL_LIBS="$(freetype-config --libs) ${GEMLIBS}/GemLibs/FTGL/unix/src/.libs/libftgl.a" ./configure --with-pd=${PDPATH} i haven't yet spotted any problems with my built (but probably i have linked the freetype2-lib dynamically, which i guess i should NOT do. what is the standard tool on os-x to find out the dll-dependencies of a binary? something like "ldd" on linux. mf.asdr. IOhannes

6 11

filmDS
by chris clepper 24 Aug '06

24 Aug '06

I just added a filmDS class to CVS. Right now it only plays the clip at 1X speed but it does work with the rest of the pix_objects. I used the HAVE_DIRECTSHOW define to determine if filmDS or filmAVI is used in pix_filmNEW.cpp. cgc

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motion blur
by Erich Berger 23 Aug '06

23 Aug '06

hi, i m trying to follow the possibilities of motion blur or drawing traces (without single buffering) as it was discussed a while ago: i m consulting the redbook in terms of motion blur. this is really vage territory for me ... in chapter 10 section accumulation buffer there is one possibility described. http://fly.srk.fer.hr/~unreal/theredbook/chapter10.html (find motion blur). is it possible to realize that with the GEMgl objects ? i guess whats missing in the gem-code is the setup of the accumulation buffer in GemWinCreateXWin.cpp or can this be done also after window creation with the gl objects ? another trail on a similar subject: in http://lists.puredata.info/pipermail/gem-dev/2003-09/000138.html its quite a while did anyone (ben) test this successfully ? ------------- The "clearmask N" message can be passed to a gemwin to set the clearing behaviour. "N" is simply cached and passed directly in the glClear call - generate it using the GLdefine mechanism and GL_COLOR_BUFFER_BIT, GL_DEPTH_BUFFER_BIT etc.. [GEMglClear] can be used in other gemlists to control buffer clearing. ------------- what is N in this description ? would be great if sombody could help me a few steps further. best erich --------------------- http://randomseed.org

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pix_movieDS and updated pix_videoDS
by chris clepper 22 Aug '06

22 Aug '06

We had a consultant come by last week and help out with the ridiculous Microsoft DirectShow API. The end result was a new DirectShow handling object, pix_movieDS, and updates to pix_videoDS for recording to disk. I actually know a little something about DS now too. We could replace the VFW handling for pix_film with DS if desired. Right now the DS stuff works OK, but not using the 'suggested' (read strongly enforced) MS path results in pretty severe performance penalties. I may try to hack in YUV handling to help that out. Also, I seem to have destroyed the CVS web browser for our project. cgc

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stencil buffer
by cyrille henry 22 Aug '06

22 Aug '06

hello, i finally have a patch that use the stencil buffer (to create a mask). nothing very impressive, but i send it here for the record. cyrille #N canvas 576 30 849 894 10; #X obj 39 330 GEMglEnable; #X floatatom 125 332 5 0 0 0 - - -; #X obj 111 282 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 -1; #X obj 111 305 GLdefine GL_STENCIL_TEST; #X obj 129 280 loadbang; #X obj 104 382 GLdefine GL_STENCIL_BUFFER_BIT; #X obj 166 361 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 -1; #X floatatom 119 407 5 0 0 0 - - -; #X obj 104 359 loadbang; #X obj 39 249 GEMglClearStencil 0; #X obj 39 407 GEMglClear; #X obj 39 33 gemhead 45; #X obj 39 506 GEMglStencilFunc; #X msg 146 480 1; #X obj 75 436 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 -1; #X obj 74 459 GLdefine GL_ALWAYS; #X obj 96 436 loadbang; #X floatatom 100 480 5 0 0 0 - - -; #X obj 39 579 GEMglStencilOp; #X floatatom 149 582 5 0 0 0 - - -; #X obj 70 486 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 -1; #X obj 70 552 GLdefine GL_REPLACE; #X obj 95 530 loadbang; #X obj 230 723 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 -1; #X obj 161 722 loadbang; #X obj 39 790 GEMglClear; #X floatatom 157 791 5 0 0 0 - - -; #X obj 133 768 GLdefine GL_DEPTH_BUFFER_BIT; #X obj 117 723 t b b; #X obj 490 287 GEMglStencilFunc; #X msg 597 263 1; #X obj 525 220 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 -1; #X obj 546 218 loadbang; #X floatatom 535 264 5 0 0 0 - - -; #X obj 525 241 GLdefine GL_NOTEQUAL; #X obj 490 396 color 1 0 0; #X obj 490 659 GEMglStencilFunc; #X msg 597 634 1; #X obj 525 594 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 -1; #X obj 547 592 loadbang; #X floatatom 536 638 5 0 0 0 - - -; #X obj 490 709 rotateXYZ 0 0 45; #X obj 525 615 GLdefine GL_EQUAL; #X obj 490 685 color 1 1 0; #X obj 117 746 GLdefine GL_COLOR_BUFFER_BIT; #X obj 490 365 GEMglStencilOp; #X floatatom 601 364 5 0 0 0 - - -; #X obj 521 310 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 -1; #X obj 544 307 loadbang; #X obj 521 331 GLdefine GL_KEEP; #X floatatom 58 115 5 0 0 0 - - -; #X floatatom 97 115 5 0 0 0 - - -; #X obj 39 167 colorRGB 0 0 1; #X obj 117 789 |; #X floatatom 587 810 5 0 0 0 - - -; #X obj 569 762 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 -1; #X obj 569 785 GLdefine GL_STENCIL_TEST; #X obj 587 760 loadbang; #X obj 490 810 GEMglDisable; #X text 67 212 allow \, clear and configure stencil buffer; #X obj 39 655 circle 1.5; #X obj 490 734 sphere 1.2 25; #X text 121 655 draw in all buffer; #X text 104 820 clear color and depth buffer; #X text 488 189 draw where the stencil buffer is not 1; #X obj 490 423 square 3; #X text 522 565 draw where the stencil buffer is 1; #X msg 365 41 0 \, destroy; #X obj 529 21 gemhead 10; #X floatatom 562 41 5 0 0 0 - - -; #X floatatom 602 41 5 0 0 0 - - -; #X floatatom 642 41 5 0 0 0 - - -; #X obj 529 87 world_light; #X obj 529 62 rotateXYZ 0 0 0; #X msg 356 22 lighting 1 \, create \, 1; #X obj 356 66 gemwin; #X obj 39 138 rotateXYZ; #X text 151 115 <- play with this.; #X connect 0 0 10 0; #X connect 2 0 3 0; #X connect 3 0 1 0; #X connect 3 0 0 1; #X connect 4 0 3 0; #X connect 5 0 7 0; #X connect 5 0 10 1; #X connect 6 0 5 0; #X connect 8 0 5 0; #X connect 9 0 0 0; #X connect 10 0 12 0; #X connect 11 0 76 0; #X connect 12 0 18 0; #X connect 13 0 12 3; #X connect 13 0 12 2; #X connect 14 0 15 0; #X connect 14 0 13 0; #X connect 15 0 12 1; #X connect 15 0 17 0; #X connect 16 0 13 0; #X connect 16 0 15 0; #X connect 18 0 60 0; #X connect 20 0 21 0; #X connect 21 0 19 0; #X connect 21 0 18 1; #X connect 21 0 18 2; #X connect 21 0 18 3; #X connect 22 0 20 0; #X connect 23 0 28 0; #X connect 24 0 28 0; #X connect 25 0 29 0; #X connect 27 0 53 1; #X connect 28 0 44 0; #X connect 28 1 27 0; #X connect 29 0 45 0; #X connect 30 0 29 3; #X connect 30 0 29 2; #X connect 31 0 34 0; #X connect 32 0 30 0; #X connect 32 0 34 0; #X connect 34 0 29 1; #X connect 34 0 33 0; #X connect 35 0 65 0; #X connect 36 0 43 0; #X connect 37 0 36 3; #X connect 37 0 36 2; #X connect 38 0 42 0; #X connect 39 0 37 0; #X connect 39 0 42 0; #X connect 41 0 61 0; #X connect 42 0 36 1; #X connect 42 0 40 0; #X connect 43 0 41 0; #X connect 44 0 53 0; #X connect 45 0 35 0; #X connect 47 0 49 0; #X connect 48 0 47 0; #X connect 49 0 46 0; #X connect 49 0 45 1; #X connect 49 0 45 2; #X connect 49 0 45 3; #X connect 50 0 76 1; #X connect 51 0 76 2; #X connect 52 0 9 0; #X connect 53 0 26 0; #X connect 53 0 25 1; #X connect 55 0 56 0; #X connect 56 0 54 0; #X connect 56 0 58 1; #X connect 57 0 56 0; #X connect 60 0 25 0; #X connect 61 0 58 0; #X connect 65 0 36 0; #X connect 67 0 75 0; #X connect 68 0 73 0; #X connect 69 0 73 1; #X connect 70 0 73 2; #X connect 71 0 73 3; #X connect 73 0 72 0; #X connect 74 0 75 0; #X connect 76 0 52 0;

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configure failure
by davide 22 Aug '06

22 Aug '06

Hi! I'm trying to compile gem but I get this error when executing ./configure checking size of unsigned int... configure: error: cannot compute sizeof (unsigned int), 77 See `config.log' for more details. Fedora Core 5 + CCRMA on a single processor 32 bit i386 (a hp nx6110 laptop, celeron M, 512 MB ram) I just compiled pd from CVS I also installed mesa-libGLU-devel and libXxf86vm-devel from fc5 repositary and lame, libquicktime and ffmpeg from source I really can't understand what's wrong... here is the complete configure output [davide@localhost src]$ ./configure checking for Base/configLinux.h.in... yes checking for g++... g++ checking for C++ compiler default output file name... a.out checking whether the C++ compiler works... yes checking whether we are cross compiling... no checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C++ compiler... yes checking whether g++ accepts -g... yes checking for gcc... gcc checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ANSI C... none needed checking for a BSD-compatible install... /usr/bin/install -c checking whether ln -s works... yes checking for sin in -lm... yes checking for main in -lz... yes checking for dlopen in -ldl... yes checking how to run the C preprocessor... gcc -E checking for X... libraries , headers checking for gethostbyname... yes checking for connect... yes checking for remove... yes checking for shmat... yes checking for IceConnectionNumber in -lICE... yes checking for main in -lX11... yes checking for main in -lXext... yes checking for XF86VidModeGetAllModeLines in -lXxf86vm... yes checking for main in -lXext... (cached) yes checking for glInitNames in -lGL... yes checking for gluLookAt in -lGLU... yes checking for "OpenGL"-framework... no checking for "AGL"-framework... no checking for "Carbon"-framework... no checking for "QuickTime"-framework... no checking for pkg-config... /usr/bin/pkg-config checking pkg-config is at least version 0.9.0... yes checking for PKG_IMAGEMAGICK___CFLAGS... checking for PKG_IMAGEMAGICK___LIBS... -lMagick++ -lMagick checking for PKG_TIFF_CFLAGS... checking for PKG_TIFF_LIBS... checking for tiff-config... no checking for TIFFOpen in -ltiff... yes checking for PKG_JPEG_CFLAGS... checking for PKG_JPEG_LIBS... checking for jpeg-config... no checking for jpeg_read_header in -ljpeg... yes checking for PKG_LIBQUICKTIME_CFLAGS... checking for PKG_LIBQUICKTIME_LIBS... checking for libquicktime-config... no checking for quicktime_init in -lquicktime... yes checking for PKG_LQT_CFLAGS... checking for PKG_LQT_LIBS... checking for lqt-config... yes checking for PKG_MPEG3_CFLAGS... checking for PKG_MPEG3_LIBS... checking for mpeg3-config... no checking for mpeg3_check_sig in -lmpeg3... yes checking for PKG_MPEG_CFLAGS... checking for PKG_MPEG_LIBS... checking for mpeg-config... no checking for OpenMPEG in -lmpeg... no checking for PKG_AVIFILE_CFLAGS... checking for PKG_AVIFILE_LIBS... checking for avifile-config... no checking for CreateIAviReadFile in -laviplay... no checking for PKG_FFMPEG_CFLAGS... checking for PKG_FFMPEG_LIBS... checking for ffmpeg-config... no checking for av_open_input_file in -lavformat... yes checking whether (AVStream)->codec is of type "*AVCodecContext"... yes checking for egrep... grep -E c hecking for ANSI C header files... no checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking linux/videodev.h usability... yes checking linux/videodev.h presence... yes checking for linux/videodev.h... yes checking for PKG_IEEE1394_CFLAGS... checking for PKG_IEEE1394_LIBS... checking for ieee1394-config... no checking for main in -ldv... yes checking for PKG_FTGL_CFLAGS... checking for PKG_FTGL_LIBS... checking for ftgl-config... no checking for main in -lftgl... no checking for PKG_GLTT_CFLAGS... checking for PKG_GLTT_LIBS... checking for gltt-config... no checking for GLTTFont in -lgltt... no checking for pthread_create in -lpthread... yes checking for X... libraries , headers checking for ANSI C header files... (cached) no checking fcntl.h usability... yes checking fcntl.h presence... yes checking for fcntl.h... yes checking float.h usability... yes checking float.h presence... yes checking for float.h... yes checking for memory.h... (cached) yes checking stddef.h usability... yes checking stddef.h presence... yes checking for stddef.h... yes checking for stdlib.h... (cached) yes checking for string.h... (cached) yes checking for strings.h... (cached) yes checking sys/ioctl.h usability... yes checking sys/ioctl.h presence... yes checking for sys/ioctl.h... yes checking sys/time.h usability... yes checking sys/time.h presence... yes checking for sys/time.h... yes checking termios.h usability... yes checking termios.h presence... yes checking for termios.h... yes checking for unistd.h... (cached) yes checking for stdbool.h that conforms to C99... yes checking for _Bool... yes checking for an ANSI C-conforming const... yes checking for inline... inline checking for size_t... yes checking whether time.h and sys/time.h may both be included... yes checking for GLsizeiptrARB... yes checking for unsigned int... yes checking size of unsigned int... configure: error: cannot compute sizeof (unsigned int), 77 See `config.log' for more details.

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GEM-dev August 2006