On Sam, 2017-04-08 at 08:29 +0200, Christof Ressi wrote: > If it can be on the GPU, use a fragment shader! Do you work with a > formula or do you set the alpha values by hand?
By Hand (maybe later by a formula). Is it possible? The idea is to have two overlaying images. The visible one slowly decomposes over time so that the image behind appears. I thought about setting alpha to for more and more pixels as a way to decompose the front image. Maybe there is another/better way? Roman > > Gesendet: Freitag, 07. April 2017 um 23:39 Uhr > > Von: "Roman Haefeli" <[email protected]> > > An: [email protected] > > Betreff: [PD] [Gem] Modifying single pixel of pix image > > > > Hi > > > > Is it possible to manipulate a single pixel of a an image loaded by > > [pix_image]? Specifically, I'd like to change the alpha value of > > certain pixels. It doesn't matter to me whether the manipulation > > happens in the pix realm or the GL realm. Currently I can think > > only of > > cumbersome ways like using [pix_dump] -> [pix_set] and applying the > > manipulation to the largish list passed between them. Or by using > > [pix_pix2sig~] -> [pix_sig2pix~] which is basically the same, but > > would > > allow to do the manipulation on a table. > > > > Roman > > _______________________________________________ > > [email protected] mailing list > > UNSUBSCRIBE and account-management -> https://lists.puredata.info/l > > istinfo/pd-list > >
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