16 Feb
2004
16 Feb
'04
11:56 a.m.
Greetings:
I finally resolved the mouse noise problem with ImproSculpt. Here's
what I did:
1. Made the csound binary suid root.
2. Erased the CsOptions for Linux in the ImproSculpt.csd file
(they're ignored when csound is suid root).
3. Ran the app so:
csound --sched -d -i devaudio -o devaudio -b 512 -B 4096 -m6
ImproSculpt.csd
Screen redraws are slower, but the mouse noise is gone. I'm still
confused as to why all this trouble just "suddenly" occurred, but I'm
glad to have discovered a solution. I also learned a lot about PCI
latency timing, graphics card priority, hard/software buffering, and
lots of other stuff that chewed up a bunch of my time.
Many thanks to all who responded to my dilemma, I appreciate all the
assistance and advice.
Best regards,
dp
Gabriel Maldonado wrote:
Hi Dave,
It could depend on the massive CPU resources required by improsculpt,
so any movement on the GUI can subtract processor time, causing
drop-outs. Have you tried to increase the buffer size? However, try to
ask Oeyvind if this could be a possible cause. Notice that in
CsoundAV, there is still the original FLTK code, not that modified by
Istvan. I still have to study Istvan code, to see if there are
substantial differences, besides merging all code in a unique cpp file.
Gabriel
Dave Phillips wrote:
Greetings:
I've been testing various CSD files to see and hear how the FLTK
opcodes are supported in the most recent canonical CVS sources. Many
files work fine (e.g., J. M. Comajuncosas' 303 emulator, his Synth
Toot, and his Direct Hammond2), but I'm having a problem with Oeyvind
Brandtsegg's ImproSculpt. When I move the mouse in this program I
hear a nasty ripping noise tracking the mouse movement. Noise occurs
when I change window focus or move a window. Note that this noise
does not occur with other FLTK-based apps, so I'm wondering what
there might be in ImproSculpt to cause this trouble. Steven Yi
suggested that the FLTK updating may itself be a problem, but the
other apps tested work fine. So I'm at an impasse and can use some
suggestions for troubleshooting. Sorry to bother the developer's list
but it seemed the better forum to ask in. Could Steven be right about
the FLTK opcodes themselves causing the problem ? Would there be any
advantage compiling Csound against a static libfltk ?
Best,
Dave Phillips