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Crossfading between multiple matrices… and not just two.

April 21, 2009 | 8:45 pm

I need to crossfade between multiple channels, which means crossfade between multiple matrices, and not just the 2 of the matrices in the jit.xfade does.. Simply put: I need like a mixer, where i can combine whatever 2 channels i want, and crossfade between these two, to be displayed in one window. I have really tried to harvest the forum for a solution and even the net for info, but i pretty much didnt get anywhere and i am quite stuck…

I was thinking of putting a preset between the channels and the jit.xfade but i came to the conclusion that didnt work quite well.
Check out the attached patch, its just a simple example, of where i am trying to go (i need to combine 1 and 2, 3 and 5 or vice versa, but all of these combinations to go into one fader). I need everything displayed/rendered in the pwindow.

Any suggestions?

Help is tremendously appreciated!!


April 22, 2009 | 5:45 am

hello,
it depends on what you want to do with the matrices…
but if it’s only to show the image you could use
5 jit.qt.movie–>jit.gl.slab with 5 inputs–>jit.gl.videoplane
and in the slab you put your modified version of 43j-fourwaymix.jxs
look in the examples files there is an fp (fragment program) and vp(vertex program) wich lets crossfade between several movies
…welcome to shadering and slabing…
take a look in this one it’s not too hard to change for your purpose
cheers
Hubert


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