Oliver, sounds good, please share the shaders. Is there any option to move from GPU to CPU so the pix_whatever objects can manipulate them again?
Popesz On Thu, Nov 22, 2018 at 4:09 PM oliver <oli...@klingt.org> wrote: > Csaba Láng wrote: > > Dear List, > > > > I am still looking for a reasonable solution to have a video input to > > Mac OS X with Gem. > > > > I was testing syphon_client, works almost OK, except that could not make > > any motion detector out of it, no pix_background works with it, cannot > > change contrast, threshold, basically nothing. > > as far as i know from the mac/MAX-world, with syphon you get a TEXTURE, > not a pix. which means that all pix_ objects won't work, because the > data is on the GPU (not pixels calculated by the CPU). > > this is actually a good thing for manipulating video as it's much more > efficient, especially with larger image sizes. > > the "downside" of it is that you have to enter the openGL world to do > things. maybe start by checking out any texture-related GEM objects, > like those listed under "MANIPULATORS" in the GEM documentation > ([color], [scaleXYZ], [rotateXYZ] ...) to see if it gets you anywhere. > > i have a handful of shaders concerning contrast, threshold, chromakey > (the one i recently posted here) etc... > > if you want i can post them for testing > > best > > oliver > > > > _______________________________________________ > Pd-list@lists.iem.at mailing list > UNSUBSCRIBE and account-management -> > https://lists.puredata.info/listinfo/pd-list >
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