[GEM-dev] Ressources when alpha canal of [colorRGB] is 0

[chris clepper]

Just feed the 0..1 going into colorRGB right inlet into the gemhead.

On Fri, Apr 4, 2008 at 11:42 AM, Jack <jack at rybn.org> wrote:

> Thanx Chris, it was what I thought.It would be interresting if the gemhead
> turn off when the alpha channel is 0 or not (and why) ?
> ++
>
> Jack
>
>
> Le 4 avr. 08 à 18:32, chris clepper a écrit :
>
> No.  In the alpha chain the geometry is still computed only the pixels are
> not drawn in the back buffer.  Also, the gemhead has some overhead for
> setting up the various states and matrices.  Turning off the gemhead
> bypasses everything in the chain.
>
> On Fri, Apr 4, 2008 at 11:20 AM, Jack <jack at rybn.org> wrote:
>
> > Is it the same when the alpha canal of a [colorRGB] is 0 than when
> > [gemhead] has received the message 0 :
> >
> > [gemhead]
> > |
> > [alpha]
> > |
> > [colorRGB 1 1 1 0]
> > |
> > [square]
> >
> >
> > is it the same for the ressources take from the CPU/GPU than :
> >
> >
> > [loadbang]
> > |
> > |0(
> > |
> > [gemhead]
> > |
> > [square]
> >
> > (The both methods erase the square).
> >
> > Thanx.
> > ++
> >
> > Jack
> >
> > _______________________________________________
> > GEM-dev mailing list
> > GEM-dev at iem.at
> > http://lists.puredata.info/listinfo/gem-dev
> >
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puredata.info/pipermail/gem-dev/attachments/20080404/167dad93/attachment.htm>