[PD] FW: GEM noobie: I don't understand this glsl thing... but I need it!

[Patrice Colet]

Thank you for sharing this! Particulary the links at the end of the page, the shaders proposed at https://www.shadertoy.com
are easy to transpose for Gem, attached is an experiment with the fireball shader.

Colet Patrice

----- Mail original -----
> De: "Benjamin ~ 01xy" <benjah at free.fr>
> À: "Pd List" <pd-list at iem.at>
> Envoyé: Mardi 10 Septembre 2013 17:12:03
> Objet: Re: [PD] FW: GEM noobie: I don't understand this glsl thing... but I need it!
> 
> Hello,
> 
> oops, initialy not replied to the list ...
> 
> We have a modest wiki page in french about Pd vs glsl, some
> ressources
> there as well http://wiki.labomedia.org/index.php/Pure_Data_vs_OpenGL
> 
> ++benjamin
> 
> Le 10/09/2013 13:02, Cyrille Henry a écrit :
> > the glsl exemples are in a specific folder in gem/exemple.
> > it's not very documented, but you'll have some basic shader.
> > it's a good place to start.
> > c
> >
> >
> > Le 10/09/2013 12:43, David Schaffer a écrit :
> >> Hi, and thank you for your answers,
> >>
> >> I know about extended view, I 've donwloaded it and used to build
> >> my
> >> design. The idea for me is now to get a better understanding of
> >> the
> >> glsl chain, because it seems to be the place where all the magic
> >> happens. I thought I could find more examples of glsl objects
> >> implementations in pd, and some written code that I could try to
> >> hack... any help appreciated.
> >>
> >> David
> >>
> >>
> >> http://www.flickr.com/photos/schafferdavid/
> >>
> >> http://audioblog.arteradio.com/David_Schaffer/
> >>
> >>
> >>
> >>  > Date: Tue, 10 Sep 2013 09:27:17 +0200
> >>  > From: news at petervenus.de
> >>  > To: pd-list at iem.at
> >>  > Subject: Re: [PD] GEM noobie: I don't understand this glsl
> >> thing... but I need it!
> >>  >
> >>  > for ExtendedviewToolkit, there is a webpage [1]
> >>  > and you can download the latest via github [2]
> >>  >
> >>  > [1] extendedview.mur.at
> >>  > [2] https://github.com/extendedview/extended_view_toolkit
> >>  >
> >>  > cheers, Peter
> >>  >
> >>  > Am 09.09.13 23:51, schrieb John Harrison:
> >>  > > ExtendedViewToolkit does photo stitching. Maybe it does what
> >>  > > you
> >> want or
> >>  > > can give you some ideas:
> >>  > > http://puredata.info/Members/Weitsicht/extended-view-toolkit/
> >>  > >
> >>  > >
> >>  > >
> >>  > >
> >>  > > On Mon, Sep 9, 2013 at 4:21 PM, Dan Wilcox
> >> <danomatika at gmail.com> wrote:
> >>  > >
> >>  > >> glsl is the open gl shader language ... basically a simple
> >> C-like language
> >>  > >> for doing graphics stuff on the GPU, see
> >>  > >> https://en.wikipedia.org/wiki/GLSL
> >>  > >>
> >>  > >> Also, see the OpenGL Orange
> >> Book<http://www.amazon.com/OpenGL-Shading-Language-3rd-Edition/dp/0321637631>
> >>  > >>
> >>  > >> On Sep 9, 2013, at 5:01 PM, pd-list-request at iem.at wrote:
> >>  > >>
> >>  > >> *From: *David Schaffer <schafferdavid at hotmail.com>
> >>  > >> *Subject: **[PD] GEM noobie: I don't understand this glsl
> >> thing... but I
> >>  > >> need it!*
> >>  > >> *Date: *September 9, 2013 4:24:08 PM EDT
> >>  > >> *To: *pd list <pd-list at iem.at>
> >>  > >>
> >>  > >>
> >>  > >> Hi there,
> >>  > >>
> >>  > >> I'm in the process of writing my own photo
> >>  > >> stitching/assembling abstraction but I'm having a lot of
> >>  > >> trouble
> >>  > >> understanding what the glsl object do... I've been able to
> >> implement an
> >>  > >> edge blurring function by copy/pasting the glsl code from
> >>  > >> the
> >>  > >> "panoramique.pd" patch and the "panoramique.vert" and
> >> "panoramique.frag"
> >>  > >> files to the right places, but it only blurs vertical edges.
> >> Can anyone
> >>  > >> tell me how I could blur horizontal edges too? and... what
> >>  > >> this
> >> glsl thing
> >>  > >> is all about. I'm no code expert, so please keep it
> >> understandable (!)
> >>  > >>
> >>  > >> Thanks a lot,
> >>  > >>
> >>  > >> David
> >>  > >>
> >>  > >> http://www.flickr.com/photos/schafferdavid/
> >>  > >> https://soundcloud.com/schafferdavid
> >>  > >>
> >>  > >>
> >>  > >> --------
> >>  > >> Dan Wilcox
> >>  > >> @danomatika
> >>  > >> danomatika.com
> >>  > >> robotcowboy.com
> >>  > >>
> >>  > >>
> >>  > >>
> >>  > >>
> >>  > >>
> >>  > >>
> >>  > >> _______________________________________________
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> >>  > >>
> >>  > >>
> >>  > >
> >>  > >
> >>  > >
> >>  > > _______________________________________________
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