hi,
i compiled today successfully
the ati mach64 dri branch of dri.sourceforge.net .
for fellows who have the same chip (mostly on notebooks)
i put together the steps which brought me to success at
http//people.telecoma.net/rat/mach64/mach64dri.txt
its very rough written,
and its inevitable to read also the dri compilation
guide at dri.sourceforge.net section documentation.
i wrote the rough guide because there are some obsolete
steps at the dri documentation and a few additional.
simply compare the steps.
maybe some of them are not obsoltete for you ...
be careful and of course no guaranty :-)
glxgears give me now 289 fps instead of 178
(compaq armada e500 pentium 800)
unfortunately Gem still gives the following errors when
i create a gemwin:
error: GEM: Unable to create single buffer window
error: GEM: Error creating const context
error: GEM: A serious error occured creating const Context
error: GEM: Do not continue!
compiling Gen again pointing at the new /usr/X11R6-DRI/libs
did not help.
still i get also some errors in the XFree86.0.log
but maybe one can discuss this later when a few people
tried it out.
cheers
erich
Hello,
biquad~ formula in the PD help-patch is :
y(n) = ff1 * w(n) + ff2 * w(n-1) + ff3 * w(n-2)
w(n) = x(n) + fb1 * w(n-1) + fb2 * w(n-2)
biquad~ formula in Jmax is :
y[n] = c1*x[n] + c2*x[n-1] + c3*x[n-2] - c4*y[n-1] - c5*y[n-2]
What is the mathematical relation between these two formulae (so between Pd
and Jmax coefficients) ?
I found a nice document that explains how to get the right coeffs for
different filters :
http://www.harmony-central.com/Computer/Programming/Audio-EQ-Cookbook.txt
and I'm not sure how to use it with PD biquad~ object.
nicolas
Yet another case where I may not be understanding something:
I'm using the +~ object to mix audio streams in some of my patches.
In most cases it does that, but there are a few points in which it
seems to be modulating one stream with the other, rather than just
mixing them. This is most pronounced when at higher volumes. I thought
that I might be overloading my amplifier, but it acts the same if
listened to through headphones.
Is there a way to keep this from happening?
--
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