hi, i'm on osx 10.4 intel with pd-0.39.2-extended-test7, gem says "GEM: ver: 0.91-cvs", "GEM: compiled: Jan 5 2007".
the wrong colours appear equally when using TIFF images. to which object should i send the colorspace message? if i put it into [pix_movie], i get: "error: pix_movieDarwin: no method for 'colorspace'". interestingly, if i remove all the [pix_texture] objects and use [pix_draw] instead, the colours are displayed correctly (only i'm worried since the help says pix_draw is very slow compared to pix_texture, and i need to draw lots of CPU for audio later on). also, if i use [pix_draw] instead of [pix_texture], i am able to use [pix_mix] (doesn't work with pix_texture?), so i can crossfade to a totally transparent picture, which does almost the fade-in/out i want. however, the pixel mixing is strange: the image becomes white before it's faded out. that is, pix_mix seems to to be assuming something like "alpha premultiplied", like stolidly multiplying each channel separately and not using alpha information for R/G/B multiplication: http://sciss.de/test/Bild%203.png (you see the background of the text in the second screen from the left has gotten white instead of staying black ; this is the patch "gemTest2G.pd", using this transparent image : http://sciss.de/test/transp.png) last not least, the images appear 180 degrees rotated when using pix_draw instead of pix_texture (see also Bild 3.png) ciao, -sciss- --- chris clepper <[EMAIL PROTECTED]> wrote: > What OS and GEM version? > > On OSX the pix_film/movie object defaults to YUV. > Send a 'colorspace RGBA' > message to the object before loading the clip if you > need the alpha from the > clip. pix_image uses RGBA by default. If you have > problems with PNG the > try uncompressed or TIFF. > > Also, put the alpha object after the pix_objects. > > On 2/16/07, Item State <[EMAIL PROTECTED]> > wrote: > > > > hi, > > > > i'm trying to port a former jitter patch to pd/gem > > > (http://lists.puredata.info/pipermail/pd-list/2006-11/043853.html). > > i have problems getting overlayed images to > display > > properly. i have four rectangles fed by pix_movie, > > then i need to fade in and out a rendered text > image. > > i tried using pix_image -> pix_texture and [alpha > 1]. > > the images are .png with transparent portions. i > once > > got it to display correctly, but now if i open the > > patch, the videos all show up with wrong colours: > > > > http://sciss.de/test/Bild%201.png > > (see attached patch gemTest2.pd) > > > > once i remove the pix_image and pix_texture, save > the > > patch and re-open it, the videos show up correctly > > again: > > > > http://sciss.de/test/Bild%205.png > > (see attached patch gemTest2B.pd) > > > > ... also, i don't know how to fade in the text > (the > > "action" string). is there an alpha-channel > multiplier > > for pix_image? thanks for hints! > > > > is it possible to stretch the video so that the > > rectangle stays the same, but only the top part of > the > > video is shown (vertically zoomed without > > interpolation, so that you can see the pixels)? > > > > ciao, -sciss- > > > > > > > > Send instant messages to your online friends > http://au.messenger.yahoo.com > > _______________________________________________ > > [email protected] mailing list > > UNSUBSCRIBE and account-management -> > > http://lists.puredata.info/listinfo/pd-list > > > > > > > Send instant messages to your online friends http://au.messenger.yahoo.com
gemTest2F.pd
Description: 1097526413-gemTest2F.pd
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