thanks for the answer! i will need to start to use shaders one day, i know that long already **dream** For now the project goes back to the drawer
I would love to see a new pd convention to find motivation for week intense pd work.. Am 26.08.2015 um 09:46 schrieb Py Fave <[email protected]>: > you need to use glsl shaders to do that efficiently . > > first check for existing shaders > > you will need a powerful gpu > > > > ------------ > this is a lumakey example (was sent to me by chdh) > -------------- > keying.frag > > ------------- > uniform float R,G,B,K; > uniform sampler2D texture; > > void main (void) > { > float d = 0.; > vec4 color = texture2D(texture, gl_TexCoord[0].st ); > > d+= abs(color.r - R); > d+= abs(color.g - G); > d+= abs(color.b - B); > > d*=K; > > color.a = abs(d); > > gl_FragColor = color; > > } > > ------------------------------ > > > 2015-08-12 15:13 GMT+02:00 hi via Pd-list <[email protected]>: >> Dear Pd folk, >> >> I am investigating options to improve chroma keying within pd and gem to use >> within a theater installation. I need more advanced keying features than >> seemingly possible with [pix_choma_key], like border corrections and >> smoother edge transparencies. The best thing i found so far is this: >> >> http://forum.pdpatchrepo.info/topic/2953/neat-chroma-keying/3 >> >> very nice, but i would need more a quality like in readymade video mixers >> Did any of you program anything like that? >> >> Also i'm trying to find out, whether a potential setup with a computer with >> 4 HD-SDI inputs would be capable of keying 2 HD-live-signals at the same >> time and overlay that over one HD-live-background. >> >> Are there any experiences (hardware and software) from your side, you could >> share? >> >> I would so much love to make this happen with pd and not with an expensive >> video mixer i would have to buy. >> >> Any help or ideas are appreciated. >> >> Love to pd, >> >> jonny >> _______________________________________________ >> [email protected] mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
