[PD] [GEM]: GL Shader Language

[cyrille henry]

Cypod a écrit :
> These are really cool examples, thanks for sending them. They all
> worked for me, except the fractal one was all black and there was a
> uniform float maxIterations; error
what was exactly the error?



cyrille

> 
> On 6/17/07, cyrille henry <cyrille.henry at la-kitchen.fr> 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
>>
>>
>> > 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?
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>> >> >
>> >>
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> 
>