[PD] GEM - edge blending and polygon smooth

[cyrille henry]

hello,

Le 16/02/2011 13:43, rainer _ a écrit :
> hi,
>
> i´m currently working on a patch for a multiscreen / multiprojector installation. I know, probably vvvv is the better choice to do this - but first i want to try it with GEM. i started with two screens, two pd instances, two gemwins framesynced over netsend/receive on one machine. for edgeblending i use pix_takealpha and a matching tif with alpha channel.
>
look at a thread named "soft edge" on this mailling list.
there a mail I send at then end of december that offer a patch that can do this kind of soft edge.
but you have to create only 1 windows that is on both screen.
(so you only have 1 pd)

> at this point the first question appears: is there an object in GEM to adjust gamma and can elevate blacklevels ???
i think everything that concern pixel value should be computed in Gpu (so with shader) for performance reason.


>
> for a rudimental imagewarping i textured the whole thing on a 4-point polygon. the next problem: on excessive warping poor edges appears on texturing - i´ve tried polygon_smooth but it seems that it does not do anything...is there a more elegant way to get smooth imagewarping???
i recently upload a Gem example for doing this.
here it is.



>
>
> thanks & best regards,
>
> rainer
>
> p.s. i´m still on GEM 0.90
???
really?
according to files date, this release was made in 2004.
lot's of work have been made since.
it's time to upgrade.

c

>
>
>
> _______________________________________________
> Pd-list at iem.at mailing list
> UNSUBSCRIBE and account-management ->  http://lists.puredata.info/listinfo/pd-list
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 12.multi_screen_projection.tar.gz
Type: application/x-gzip
Size: 214415 bytes
Desc: not available
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20110216/178e23f8/attachment-0001.bin>