[PD] [GEM]: GL Shader Language

[Hans-Christoph Steiner]

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.

.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?
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>
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