[GEM-dev] [ pd-gem-Feature Requests-2612731 ] glsl_geometry

[cyrille henry]

IOhannes m zmölnig a écrit :
> cyrille henry wrote:
>>
>>> with [cube], but not with [curve] (though it should be enough to 
>>> change the in/out geometry as mentioned above)
>> ok, it work here also with cube.
>> but i can't make it work with line.
> 
> with "line" you mean [curve]?
i test with curve, and also with a cube with [draw line( (so in GL_LINE_LOOP mode)

> 
>> even sending [geometry_type GL_LINES GL_LINE_STRIP( to glsl_program 
>> befor the linking.
> 
> [curve] uses GL_LINE_STRIP as default drawtype, so you might try to set 
> the input type of the shader to GL_LINE_STRIP (rather than GL_LNES)
> but i really have no experience at all...
i try anything i can think of, but i did never change the drawing behaviour : 
it work with cube in draw quad or draw triangles mode, but no line.

did you find a good resource to explain all of this?

> 
> btw, you can also set the input and output type separately with 
> [geometry_intype $1( and [geometry_outtype $1(
ok

> 
>>
>> btw,
>> since this message has to be send befor linking, would it be possible 
>> to add a message to unlink the shaders?
> 
> well, the program is re-linked (that is: unlinked and linkd again) when 
> it receives a new link message. isn't that enough?
it should be ok.

> 
> so
> [read shader.geom(
> followed by a
> [geometry_type GL_LINE_STRIP GL_LINES, read shader.geom(
> should work fine

do [read shader.geom( mean [open shader.geom(?
[geometry_type GL_LINE_STRIP GL_LINES( should be send to glsl program, while [open shader.geom( to glsl_geometry.

or did i misunderstand something?

thanks
Cyrille


> 
>>
>>>
>>>> or make it an official Gem example?
>>>
>>> yes, but the shader provided is so extraordinarily boring that i 
>>> wanted to wait for a nice one from you...:-)
>> i'm already working on a beter one ;-)
>>
> 
> cool
> 
> fgmasdr
> IOhannes
> 
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