Do you have a laptop with a discrete GPU (nvidia) and an integrated GPU (intel) ? Which one do you use ? Have you tried with the other GPU ? What is your OS ? Seems you are using the NVidia on a Linux (if i am right) ? ++
Jack Le 24/10/2017 à 07:18, Peter P. a écrit : > Hi list, > > I am trying to convert an audio signal to pixel data using pix_sig2pix~ > and then back to audio data using pix_pix2sig~ without further > manipulations. Please see attached patch. > > I do scale the audio signal from -1 to 1 to lie in a range compliant > to pixel data, which I assume to be 0 to 1. > > Not having connected an input to the subpatch, this signal will hence be > 0.5 and will display in the red color channel. > > Converting that red channel back to audio signals and doing the opposite > scaling operation, I am getting a 51dB constant signal at the output > even without having attached a signal to the input of pix_sig2pix~. > Checking with a snapshot~ object indicates a constant signal of 0.003921 > > I assume this to be due to limited resolution numbers in the pixel data > and wonder what their resolution is? > > Then I texture the pixel data onto a rectangle. This rectangle > does flicker and flip diagonally from time to time and I wonder if it is > an error on my machine only and where it could come from. > > Also, I am getting an error message in the Pd console upon creating a > single pix_sig2pix~ object in an empty patch: > GEM: Someone sent a bogus pointer to copy2Image > and am curious if this red error message is related to the above problem... > > Thank you for all ideas and advice! > Peter > > > > _______________________________________________ > Pd-list@lists.iem.at mailing list > UNSUBSCRIBE and account-management -> > https://lists.puredata.info/listinfo/pd-list > _______________________________________________ Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list