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000232_owner-lightwave-l _Sun Oct 16 01:14:10 1994.msg
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1995-03-23
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Date: Sat, 15 Oct 94 22:18:10 EST
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From: Dan Bloomfield <clubtoas!Dan_Bloomfield@uunet.uu.net>
To: lightwave-l@netcom.com
Subject: ScreamerNet Stray Pixels
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Reply-To: lightwave-l@netcom.com
Within the last few weeks I have started having a problem with ScreamerNet
rendering stray pixels in about ten percent of the frames rendered. On a
black background the pixels are red or green, against a colored polygon
they appear white. Actually they are usually two or three pixels clumped
together. In one group of scenes they only appear in the black background,
never on any of the objects, in the other scenes they appear even on
objects. The same scenes when rendered on Amiga's never have the pixel
artifacts. We are rendering on NEC RiscStations. I thought it might be a
hardware problem, but we just got a another RiscStation and the problem
appears on this second machine as well. We swapped the EtherNet card in the
Amiga that connected to the RiscStations, still no change. I re-installed
the LW.EXE file on the Risc machines, and re-installed LightWave 3.5 on the
Amiga. The version of the LW.EXE was also a different and newer version
than I had been running, but still no change. I do not believe we had this
problem when we first started running ScreamerNet last August, so I have
logically eliminated both software and hardware as a cause so this leaves
me muttering darkly. NewTek's advice was to re-install the software, which
I did, so what do I do now? Ideas anybody? The first RiscStation to exhibit
this problem was using a MIPS R4400PC chip at 133Mhz, our new machine uses
a MIPS R4400MC at 150Mhz, both machines are using Windows NT 3.1, both
machines render the artifacts.
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