From: Luis Ignacio Miranda (lmiranda++at++sgi.com)
Date: 08/11/2000 01:35:30
Hi Andreas,
Clipmapping is possible on Reality as well as on iRX (iR, iR2, iR3).
The difference is that since the performances of Reality are not as good as
the iRX, you have less time to draw, so it means that if you spend some of
these restricted miliseconds for clipmapping, you have even less time for
drawing.
In addition to this, the texture memory on Reality is smaller than on iRX,
so the clipregion will be smaller.
Hope to help,
Nacho
Andreas Ekstrand wrote:
> Hi!
>
> In previous messages on this list (e.g. 03 Sep 1999) there has been said
> that clipmapping is only supported in IR hardware. "Onyx2 Reality and
> Onyx2 InfiniteReality2 Technical Report" says that both Onyx2 Reality
> and Onyx2 InfiniteReality2 systems support clipmapping in hardware.
>
> So what's really the case here? When mentioning the term IR, does one
> also refer to Onyx2 Reality because this is a budget version of IR or
> what? We would like to use clipmapping on a Onyx2 Reality - what will be
> the difference comparing to the IR2?
>
> Regards,
> Andreas Ekstrand
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