Re: Flickerkilling on RE2

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Angus Dorbie (dorbie++at++multipass.asd.sgi.com)
Sat, 31 May 1997 21:25:03 -0700

You can make the polygon a subface of another which should prompt the
loader to use a pfLayer. Do this by adding a polygon to another polygon
instead of an object in the modelling tool.

Cheers,Angus.

On May 31, 12:13am, Inge Henriksen wrote:
> Subject: Flickerkilling on RE2
> --
> Hello Performers
> ----------------
> We have a Onyx RE2 with:
> 4 150 MHZ IP19 Processors
> CPU: MIPS R4400 Processor Chip Revision: 5.0
> FPU: MIPS R4010 Floating Point Chip Revision: 0.0
> Data cache size: 16 Kbytes
> Instruction cache size: 16 Kbytes
> Secondary unified instruction/data cache size: 1 Mbyte
> Main memory size: 128 Mbytes, 2-way interleaved
> I/O board, Ebus slot 3: IO4 revision 1
> RealityEngineII Graphics Pipe 0 at IO Slot 3 Physical Adapter 2 (Fchip
> rev 2)
> VME bus: adapter 0 mapped to adapter 13
> VME bus: adapter 13
> Performer 2.0 + Patch 1414
> ...
>
> When our OpenFlight databases increeces in the number of polygons, the
> more inaccurate the the polygon calculations become, thus when two
> polygons (or a polygon with a subface) are close to oneanother they
> start to flicker because of this inaccuracy. How can we get rid of this
> problem? Other databases than our own also have this problem, like
> Multigens contribution to the IRIS PERFORMER 2.0 CD; the HunterLiggett95
> demo. We had the same flickering with V1.2 of Performer.
> When I asked this question at Info-Performer earlier, I got some answers
> back (thank you!), on of them saying to increece the near-clip, this
> reduces the flickering, but it sadly does not make it go away.
>
> Thank you for any help.
>
>
>
>
> ----------------------------
> Inge Eivind Henriksen
> Autosim A.S
> Postboks 2303
> N-9002 Tromsoe
> Norway
> Tlf.nr.: +(47) 77 67 50 75
> Fax.nr.: +(47) 77 67 67 01
> E-mail: <inge++at++autosim.no>
> ----------------------------
> =======================================================================
> List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/
> Submissions: info-performer++at++sgi.com
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> SGI DevForum 97 info: http://www.sgi.com/Forum97/
>-- End of excerpt from Inge Henriksen

=======================================================================
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