Hello, Le 05/10/2013 22:51, Py Fave a écrit : > in fact my problem is not solved . > it seems like the feedback effect happens everywhere but on the > surface drawn by the shader . According to the patch, the feedback is applied on a [square 4] (where there is also the [torus 2]). Then, [gemframebuffer] 'snap' the whole 'inside' [square 4]. And your torus is inside this snapshot (as texels and not vertices). > > i use a torus , in perspective wich has a shader applied . > > i tried the following workaround(archive is joined ) , but still no luck . > the file to open has a OPEN in name . It seems there is no circle4.geom, [receive13] and [nshader0] objects/abstractions in your .zip. > > i would like the dots to have the feedback , > or dots + geometry alltogether. I can't see dot in your patch (or gem window), maybe they come from geometry shader (which is missing) ? > > i tried pix_snap2tex ( using gems.feedback from pdmtl abstractions) too > but no luck because we can't choose the mixing function . > and i would like only white to make trails . > and i don't know how to keep the supporting geometry from appearing . > the torus should be full black with a white trail only . A simple possibility is to use 2 torus, a black 'on' a white. And use the white for the trail ?
An other way : white torus as texture |__> in the feedback __> output feedback as texture |__> convert white in black texel __> output black torus as texture Then mix (multiply) black torus with white feedback to get a black torus with white trails. ++ Jack > > btw i'm on windows not my choice. > i have to share the screen with other programs wich are windows only > > any help welcome once more . > > Thanks > > Pierre-Yves > > > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list
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