[PD] [GEM]: GL Shader Language

Tue Jun 26 21:09:25 CEST 2007

What books or webpages are out there for learning how to write glsl
shaders, for use in 3D?

http://en.wikibooks.org/wiki/Programming:OpenGL

Has anyone read this one OpenGL(R) Shading Language (2nd Edition)
http://tinyurl.com/ysun6z

Are there any third party applications for writing glsl shaders that
can be easially ported over to PD?

On 6/26/07, Cypod <cypod25 at gmail.com> wrote:
> I am hoping to learn more about programming by using PD, but it would also
> be nice to crank out some good looking shaders in a timely manner
>
>
>
>  On 6/25/07, Alexandre Quessy <listes at sourcelibre.com> wrote:
> > HI Cyrille and others.
> >
> > I modified the abstraction to make opening the two files easier. It
> > uses file/parentfolder from the PdMtlAbstractions. (try it !! It
> > answers your question)
> >
> > For the C programming and such, I just meant that it is nice if we can
> > tend to make Pd easier to use for people that are not that much used
> > to advanced programming. A good documentation and a nice structure
> > helps a lot...
> >
> > a
> >
> > 2007/6/23, cyrille henry < cyrille.henry at la-kitchen.fr>:
> > >
> > >
> > > Alexandre Quessy a écrit :
> > > > Eh Jack !
> > > > Very nice examples, yes. Cyrille, do you think that one should
> > > > understand C programming in order to use Pd? I don't.
> > > i don't see your point here.
> > > glsl programming is not very diferent from C. So, understanding C is
> good for learning glsl.
> > > but you don't nead glsl in order to use pd.
> > > you just need glsl if you want to do very heavy pixel processing at
> 50fps / 1024x768 without using any  CPU time by exemple.
> > >
> > >
> > > > Of course, its
> > > > low-level orientation makes it perfect for someone to learn lower
> > > > level stuff.
> > > >
> > > > Anyways, I added an abstraction for shaders in the PdMtlAbstractions.
> > > > See https://devel.goto10.org/pdmtl/browser/trunk/pdmtl/gems
> > >
> > > cut / paste the help file is (for me) easier to use, as i usually put
> the shader in in the same directory as my patch, so i don't nead to provide
> the full path for the shader. (and the patch could run on other computer
> without changing all path).
> > > is there a solution for an abstraction to know the directory of it's
> parent patch?
> > >
> > > cyrille
> > >
> > > >
> > > > a
> > > >
> > > >
> > > > 2007/6/19, jack at rybn.org <jack at rybn.org>:
> > > >> Yep, very interesting example !
> > > >> You can "boost" Gem with glsl object.
> > > >> Is there workshop in Paris about that Cyrille ?
> > > >> I think, that it would be interesting to do.
> > > >>
> > > >> Jack
> > > >>
> > > >> >
> > > >> >
> > > >> > Hans-Christoph Steiner a écrit :
> > > >> >>
> > > >> >> On Jun 17, 2007, at 6:58 AM, cyrille henry wrote:
> > > >> >>
> > > >> >>> hello,
> > > >> >>>
> > > >> >>>
> > > >> >>> Kyle Klipowicz a écrit :
> > > >> >>>> Ooop please send any elementary examples of these things.
> > > >> >>>
> > > >> >>>
> > > >> >>> i post a few very diferents shader and the pd patch to use them
> > > >> here :
> > > >> >>>
> > > >> >>> http://drpichon.free.fr/gem_glsl_ch_200070617.zip
> > > >> >>
> > > >> >> Wow, these are some nice examples, these should be included in the
> > > >> >> "examples" section of Pd-extended.
> > > >> >>
> > > >> >
> > > >> > well, i think i should clean up some code and check licence for the
> > > >> shader
> > > >> > i did not write.
> > > >> > where should i put them in order to include them in pd-extended?
> > > >> >
> > > >> > cyrille
> > > >> >
> > > >> >> .hc
> > > >> >>
> > > >> >>>
> > > >> >>>
> > > >> >>>> I got
> > > >> >>>> confused by the Gem docs (they don't explain OpenGL as
> thoroughly as
> > > >> >>>> the vanilla Pd-docs explain DSP).
> > > >> >>>
> > > >> >>> Gem doc aim is to explain gem specific stuf. but in order to use
> Gem,
> > > >> >>> you also need a good openGL book.
> > > >> >>> (you can find lot's of them)
> > > >> >>>
> > > >> >>> cyrille
> > > >> >>>
> > > >> >>>
> > > >> >>>>
> > > >> >>>> ~Kyle
> > > >> >>>>
> > > >> >>>> On 6/17/07, cyrille henry <cyrille.henry at la-kitchen.fr> wrote:
> > > >> >>>>> hello,
> > > >> >>>>>
> > > >> >>>>> Alexandre Quessy a écrit :
> > > >> >>>>>> Hi all !
> > > >> >>>>>> The Toon.vert and Toon.frag shaders don't seem to work quite
> well
> > > >> >>>>>> here. I only get some kind of darker or lighter grey depending
> on
> > > >> >>>>>> the
> > > >> >>>>>> value of the "Phong" variable I set it to have. I am using
> > > >> >>>>>> Pd-extended
> > > >> >>>>>> 0.39-2 test 5 on Ubuntu Linux Intel. Gem is 0.91-cvs compiled
> > > >> on Mar
> > > >> >>>>>> 16 2007. Should I generate something any better ?
> > > >> >>>>> this is exactly what the toon shader is aiming to do.
> > > >> >>>>> look at it's code to undersant why.
> > > >> >>>>>
> > > >> >>>>>>
> > > >> >>>>>> Anyone has an other GLSL shader to suggest to try it with ?
> > > >> >>>>>
> > > >> >>>>> yes, google has a lot.
> > > >> >>>>>
> > > >> >>>>> i have a few other exemple on my computer, tell me if you're
> > > >> looking
> > > >> >>>>> for some specific stuf.
> > > >> >>>>>
> > > >> >>>>>
> > > >> >>>>> cyrille
> > > >> >>>>>
> > > >> >>>>>
> > > >> >>>>>>
> > > >> >>>>>> Thanks !!
> > > >> >>>>>>
> > > >> >>>>>> a
> > > >> >>>>>>
> > > >> >>>>>> 2007/6/16, chris clepper <cgclepper at gmail.com>:
> > > >> >>>>>>> GEM is a bit easier to deal with for shaders since there is
> no
> > > >> need
> > > >> >>>>> to do
> > > >> >>>>>>> any specific wrapper.  Any ARB_ vertex or fragment shader and
> any
> > > >> >>>>>>> GLSL
> > > >> >>>>>>> shader you find on the web can work in GEM without
> modification.
> > > >> >>>>> In some
> > > >> >>>>>>> cases you might need to change something in the shader text
> to
> > > >> deal
> > > >> >>>>> with
> > > >> >>>>>>> rectangle vs 2D textures.
> > > >> >>>>>>>
> > > >> >>>>>>>
> > > >> >>>>>>> On 6/16/07, Cypod <cypod25 at gmail.com> wrote:
> > > >> >>>>>>>>
> > > >> >>>>>>>> On the cycling74 webpage there is an interesting article
> about
> > > >> >>>>> writing
> > > >> >>>>>>> shaders for jitter:
> > > >> >>>>>>>>   http://cycling74.com/story /2007/5/23/181113/507
> > > >> >>>>>>>>
> > > >> >>>>>>>>
> > > >> >>>>>>>>
> > > >> >>>>>>>>
> > > >> >>>>>>>> is there a similar function available for GEM? Has anyone
> had
> > > >> >>>>> experience
> > > >> >>>>>>> with doing this?
> > > >> >>>>>>>>
> _______________________________________________
> > > >> >>>>>>>> PD-list at iem.at mailing list
> > > >> >>>>>>>> UNSUBSCRIBE and account-management ->
> > > >> >>>>>>> http://lists.puredata.info/listinfo/pd-list
> > > >> >>>>>>>>
> > > >> >>>>>>>
> > > >> >>>>>>>
> _______________________________________________
> > > >> >>>>>>> PD-list at iem.at mailing list
> > > >> >>>>>>> UNSUBSCRIBE and account-management ->
> > > >> >>>>>>> http://lists.puredata.info/listinfo/pd-list
> > > >> >>>>>>>
> > > >> >>>>>>>
> > > >> >>>>>>
> > > >> >>>>>>
> > > >> >>>>>
> > > >> >>>>>
> _______________________________________________
> > > >> >>>>> PD-list at iem.at mailing list
> > > >> >>>>> UNSUBSCRIBE and account-management ->
> > > >> >>>>> http://lists.puredata.info /listinfo/pd-list
> > > >> >>>>>
> > > >> >>>>
> > > >> >>>>
> > > >> >>>
> > > >> >>> _______________________________________________
> > > >> >>> PD-list at iem.at mailing list
> > > >> >>> UNSUBSCRIBE and account-management ->
> > > >> >>> http://lists.puredata.info/listinfo/pd-list
> > > >> >>
> > > >> >>
> > > >> >>
> > > >> >>
> > > >>
> ------------------------------------------------------------
> ----------------
> > > >>
> > > >> >>
> > > >> >>
> > > >> >>
> http://at.or.at/hans/
> > > >> >>
> > > >> >>
> > > >> >>
> > > >> >>
> > > >> >
> > > >> > _______________________________________________
> > > >> > PD-list at iem.at mailing list
> > > >> > UNSUBSCRIBE and account-management ->
> > > >> > http://lists.puredata.info/listinfo/pd-list
> > > >> >
> > > >>
> > > >>
> > > >
> > > >
> > >
> >
> >
> > --
> > Alexandre Quessy
> > http://alexandre.quessy.net
> > http://www.puredata.info /Members/aalex
> >
> > _______________________________________________
> > PD-list at iem.at mailing list
> > UNSUBSCRIBE and account-management ->
> http://lists.puredata.info/listinfo/pd-list
> >
>
>
>
> --
> B~
> www.cypod.co.nr

-- 
B~
www.cypod.co.nr