[PD] Gem: Using 2 glsl_program objects ?

[cyrille henry]

hello,

this is a big problem.

you could always use a pix_snap2text, but it's slower.

cyrille


marius schebella a écrit :
> in gem you can use
> 
> [gemhead]
>   |
>   | [dim 512 512(
>   | /
> [gemframebuffer 49]
>   |
> [translateXYZ 0 0 -4] (where are the properties for gemframebuffer???)
>   |
> [pix_image]
>   |
> [pix_texture]
>   |
> [pix_square]
> 
> but I could not get this working for glsl_program.
> marius.
> 
> 
> vade wrote:
>> quad, as in 4 verts, as in a plane. Texture your quad, bind the quad  
>> to the shader you want, render it the quad with bound texture and  
>> shader to another texture (b), output the texture (b) to the next  
>> effect in the chain.
>>
>> On Nov 25, 2007, at 5:48 PM, Alexandre Quessy wrote:
>>
>>> Hi,
>>>
>>> 2007/11/25, vade <doktorp at mac.com>:
>>>> I agree, this should be possible in theory. I suspect one should be
>>>> able to build an abstraction that would dynamically load a shader
>>>> program, render to a quad, send that quad to a texture and output the
>>>> texture.
>>>>
>>>> This is basically all jit.gl.slab does for stream processing.
>>> What do you mean by a "quad" ? You mean to render it to a texture ?
>>> This would need to use something like pix_snap2tex ? (capturing the
>>> whole window render)
>>>
>>> a
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>> I still have heard nothing on the multitexture issue for GLSL  
>>>> however,
>>>> so there may be some gotchas.
>>>>
>>>> On Nov 25, 2007, at 3:40 PM, marius schebella wrote:
>>>>
>>>>> Hi alexandre,
>>>>> why do you think it is not possible? or what exacactly do you want
>>>>> to do?
>>>>> If you try to have several glsl programs like a filter bank, first  
>>>>> do
>>>>> glsl-blur, then glsl-bloom, then glsl-apply-texture-to-model...  
>>>>> then I
>>>>> think this only works with gemframebuffer plus playing around with
>>>>> "texunit 0", "texunit 1", and so on... and maybe also the right
>>>>> in/outlets of texture to reference gpu textures.
>>>>> unfortunately GEM on os x 10.5 is still broken, so I can only do  
>>>>> very
>>>>> rudimentary stuff (no developing), but before that I was trying to  
>>>>> do
>>>>> exactly this and I think it should be possible to do.
>>>>> marius.
>>>>>
>>>>> Alexandre Quessy wrote:
>>>>>> Hi,
>>>>>> It seems like we cannot use two GLSL shader programs at a time.
>>>>>> Hence,
>>>>>> I need to merge both fragment and vertex programs to use them
>>>>>> together.... Is there a way to use more than 2 shaders ? In Jitter,
>>>>>> there is jit.gl.slab that allows that.
>>>>>> http://www.cycling74.com/documentation/jit.gl.slab
>>>>>>
>>>>>> If not possible in Gem, that would be an awesome add-on to it.
>>>>>>
>>>>> _______________________________________________
>>>>> 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
>>>>
>>> -- 
>>> 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
>>
> 
> 
> _______________________________________________
> PD-list at iem.at mailing list
> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
> 
>