[PD] [Gem][pix_threshold] (it's about [pix_alpha] in fact)

[patko]

yes, that's what I'm trying to achieve, it just misses the pretty fading we can obtain
with biquad processing, but that is exactly that,

thanks
++++
Patrice Colet - 06 32 66 03 57 

----- "Jack" <jack at rybn.org> a écrit :

> Here a patch using GLSL and the frame buffer for feedback.
> Hope it helps.
> ++
> 
> Jack
> 
> 
> 
> Le lundi 07 juin 2010 à 17:00 +0200, patko a écrit :
> > oupse I've mixed [pix_threshold] and [pix_alpha]
> > 
> > it's about pix_alpha rather but I think you've understood,
> > 
> > indeed I'd like the particle reveals background image
> > 
> > the idea is about snaping the particle system over a black rectangle
> (the mask)
> > 
> > and then turning the white pixels to alpha for revelating the
> (purple) rectangle
> > that should be rendered first
> > 
> > i've attached again the same patch but with [gemhead 5] instead of
> [gemhead 0]
> > 
> > +++
> > 
> > 
> > 
> > ----- "Jack" <jack at rybn.org> a écrit :
> > 
> > > order rendering' because [gemwin 0] <=> [gemwin 50].
> > > If I understand, you want to see a background image when the
> > > particles
> > > are drawn ?
> > > ++
> > > 
> > > Jack
> > 
> >