Le 27/02/2013 20:19, Stephan Elliot Perez a écrit :
What is a shader, and how do I use it?
see all exemple in directory 10.glsl cheers c
On Wed, Feb 27, 2013 at 7:25 PM, Cyrille Henry <c...@chnry.net <mailto:c...@chnry.net>> wrote: Le 27/02/2013 19:17, Stephan Elliot Perez a écrit : Thanks, it works now. For some reason, turning "auto" on and off (with pix_film) causes the video to lag temporarily, but I do not have this problem if I use line-objects to go through the frames. The cpu-usage goes above 100 if I have more than two videos playing at once, but I suppose I don't need more than two for this project... Also, what can I do if I want an additive blend instead of a normal cross-blend? i would use a shader for this. it offer great flexibility, even if it's a bit harder to begin with. but that's the way openGL wants you to do now. cheers c On Tue, Feb 26, 2013 at 10:16 PM, Cyrille Henry <c...@chnry.net <mailto:c...@chnry.net> <mailto:c...@chnry.net <mailto:c...@chnry.net>>> wrote: hello, Gem is mostly design to work on the GPU, and not on the CPU. GPU have hundreds of core, they are faster than CPU for image manipulations. pix_add come from the 20th century and should now be avoid since it use cpu not gpu ;-) in order to make a fade transition between 2 videos, you can use transparency on one video. add a [alpha] object after Gemhead, and send number between 0 and 1 in the last inlet of the colorRGB object to make the video appear / disapear. cheers c Le 26/02/2013 21:33, Stephan Elliot Perez a écrit : Hello, So, looking at the help file for [pd~], it seems to be primarily for audio. How can I use multiple cores to work purely with GEM? I am trying to have a simple transition between video clips, but if I have two instances of pix_film and then connect them to pix_add, the CPU-ussage skyrockets well above 100... is there a more efficient object for blending two video clips? Best regards, Stephan On Sun, Feb 3, 2013 at 10:54 PM, Thomas Mayer <tho...@residuum.org <mailto:tho...@residuum.org> <mailto:tho...@residuum.org <mailto:tho...@residuum.org>> <mailto:tho...@residuum.org <mailto:tho...@residuum.org> <mailto:tho...@residuum.org <mailto:tho...@residuum.org>>>> wrote: Hi, On 03.02.2013 22:48, Stephan Elliot Perez wrote: > I am talking about PD's CPU meter. I don't have the impression that PD > takes full advantage of 2 quad-core processors. When processing audio, > anything over 100 in PD's meter will lead to glitched audio. I am just > wondering if it will be much more when I load other videos and transition > between them. Pd will only use one core, and one core for the GUI. There are ways to distribute the load over several cores, e.g. [pd~] or use several instances of Pd that communicate with each others: http://www.mail-archive.com/____pd-list@iem.at/msg33319.html <http://www.mail-archive.com/__pd-list@iem.at/msg33319.html> <http://www.mail-archive.com/__pd-list@iem.at/msg33319.html <http://www.mail-archive.com/pd-list@iem.at/msg33319.html>> Hth, Thomas -- "Spielen Sie Strip Schnipp-Schnapp?" (Adam Weishaupt to Johann Wolfgang von Goethe in: Robert Shea & Robert A. Wilson, The Golden Apple) http://www.residuum.org/ ___________________________________________________ Pd-list@iem.at <mailto:Pd-list@iem.at> <mailto:Pd-list@iem.at <mailto:Pd-list@iem.at>> <mailto:Pd-list@iem.at <mailto:Pd-list@iem.at> <mailto:Pd-list@iem.at <mailto:Pd-list@iem.at>>> mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/____listinfo/pd-list <http://lists.puredata.info/__listinfo/pd-list> <http://lists.puredata.info/__listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list>> ___________________________________________________ Pd-list@iem.at <mailto:Pd-list@iem.at> <mailto:Pd-list@iem.at <mailto:Pd-list@iem.at>> mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/____listinfo/pd-list <http://lists.puredata.info/__listinfo/pd-list> <http://lists.puredata.info/__listinfo/pd-list <http://lists.puredata.info/listinfo/pd-list>> _______________________________________________ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
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