Re: Pixel depths on Onyx2 Reality

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Rob Jenkins (robj++at++quid)
Mon, 20 Oct 1997 13:19:00 -0700

On Oct 20, 6:19pm, Moshe Nissim wrote:
> Subject: Pixel depths on Onyx2 Reality
> Hi all,
>
> By experimenting with ircombine, it seems that the Onyx2 Reality
> configuration (NOT the Onyx2 InfiniteReality) does not support pixel
> depths greater than "medium", regardless of how many RM8's are
> configured, and how small the managed area is.
>
> Any ideas why this is so?
>
> Thanks,
> Moshe Nissim
> Orad Hi-Tec Systems
> =======================================================================
> List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/
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>-- End of excerpt from Moshe Nissim

This sounds right, Reality has reduced framebuffer capacity compared to iR ( it
will only do 4 multisamples max ).

Reality is essentially an iR with it's wings clipped ( hence the price
difference :-) ), there's summary info on:
http://www.sgi.com/Products/hardware/graphics/products/Onyx2Reality.html

Onyx2 Reality
   Hot New Graphics at an Accessible Price

   The Onyx2 Reality deskside system has one to four
   1MB cache MIPSŪ R10000 processors, 64MB to
   2GB of Memory, and a single graphics pipeline with
   one or two Reality Raster Managers (RM).

       5.5M Polygons/sec
       4-sample antialiasing
       2 RM capacity
           40MB Frame Buffer each
           16 or 64MB of Texture Memory
       1-4 180MHz 1MB Cache R10000 CPU's
       64MB-2GB RAM
       1-5 3.5" Ultra SCSI discs (4.5, 9.1GB)
       Integrated Audio and Standard CDROM
       4 I/O Slots (Optional PCI)
       20" Monitor

I hope this isn't too different from what you expected when you bought the
machine !

Cheers
Rob

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