Hello,

actually the [pix_shader] abstraction comes from a depth of field simulation I made with glsl/gem a while ago. Download link, documentation and demo video are available at the link below. If anyone wants to try it out, the depth of field patch is pretty self-explainatory and should work just out of the box.
http://vimeo.com/30188933

Before being swamped with work I was interested in porting Vade shaders and other glsl stuff to PD. I implemented his blur shaders (motion blur, zoom blur and fast blur) and they all seems to work fine but a lot of work has to be done before using them as solid generic effects. 
http://guidotamino.it/download/glslBlur.zip

A couple months ago I opened a discussion with Cyrille on the theme but we were both too busy with work to fully dive into the subject. In the meanwhile I played around with the optical flow experiments by the jitter community with nice results, a demo could be seen here: 
http://vimeo.com/30517302

I'm definetely interested in developing a set of glsl wrappers to make the whole thing easier for a beginner. I am a beginner myself and I had some tough times trying to figure out things like how to multipass glsl effects or how to feed multiple textures to a shader. This kind of stuff is almost undocumented and needs a lot of trial and error in order to be understood.

Best,
Guido

Il giorno 27/dic/2011, alle ore 11.22, philippe boisnard ha scritto:

Hello

We have worked in codelab french forum about that since one month : 
I give you the first test-lib that I have created : 
<a_shader-tr.zip>
[a_cons] is a usefull abstract to create box of variables.

2 exemples with multipass of texture
http://t-pas-net.com/videos/test_multi_shad.mov
http://vimeo.com/33974266

Yet, I adapt GLSL. system of particules with pmpd.
http://t-pas-net.com/videos/fragGLSLtest5.mov
http://t-pas-net.com/videos/testGLSL_pmpd.flv

:-)

p

Le 27 déc. 2011 à 10:36, Marco Donnarumma a écrit :

Hi all,

while studying glsl (after attending Cyrille's workshop at the PdCon), I'm porting Vade's collection of shaders [1] to Pd, 
and I only need to know I'm not reinventing the wheel.

I'm creating a glsl-help-files lib, based on the [pix_shader] wrap by Cyrille; adding ready made patches for diverse shaders and briefly explaining while some work out of the box and some others not.
It could be useful to have such documentation in Pd, as the glsl topic is not covered in depth, or at least not enough for a noob in this field as myself.

I recall Marius was doing something similar, but I'm not sure how the project ended up.



--
Marco Donnarumma
Independent New Media and Sonic Arts Practitioner, Performer, Teacher
ACE, Sound Design MSc by Research (ongoing)
The University of Edinburgh, UK
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