[PD] grain generator for gem

[wolfgang schwarzenbrunner]

At 15:37 19.01.2005, chris clepper wrote:
>pix_aging will put some 'noise' and scratches over your video.

well yes. allready looked up pix_aging. but somehow i wasn`t really happy 
with its results.
what i am looking for is not dust and scratches but filmgrain. the grain 
pix_aging produces
is not really fine structured. but anyway. i think i will try around a 
little more.

>   The particle system is somewhat analogous to granular synthesis for 3D.

well the particle system would be a good thing. but there is the problem 
with openGl. a
3dimensional particle system (well maybe not in commercial 3d applications) 
tend to
be more like little lines then concrete pixels. what i am looking for is 
something like
a 2d particle system which can be textured on geos. i think that could 
bring nice results
in grain generation.

thanks for tips
regards
wolfgang

>Are either of those close to what you have in mind?
>
>cgc
>
>On Jan 19, 2005, at 6:19 AM, wolfgang schwarzenbrunner wrote:
>
>>hi
>>
>>i am recently looking for a nice way to create quite fine structured 
>>graphical noise in gem.
>>it should be controllable in speed as well as in grain size. well in 
>>general it should really be
>>a noise generater. more something like a film grain generator.
>>
>>anyone ever succeeded in building such a thing? i would be happy for any 
>>hints.
>>maybe a grain object would be something for to do lists.
>>
>>regards
>>wolfgang
>>
>>
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