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Article #417

Re: The shining point of GeForce3 at present

#417
From: Matt
Date: Mon, 05 Mar 2001 03:45
71 lines
4558 bytes
Here is what I saw at Sharkyextreme:
"Using a new technique dubbed HRAA, NVIDIA claims that they can achieve
better performance than super-sampling with comparable quality. A
"reconstruction filter" uses data from neighboring pixels to compute the
final output of any given pixel. The sampling pattern used by the
reconstruction filter is called Quincunx and, according to NVIDA, offers
quality rivaling traditional four-sample super-sampling while incurring the
performance hit of two-sample super-sampling."
http://www.sharkyextreme.com/hardware/articles/nvidia_geforce3_preview/6.sht
ml

To me, this says Quincunx is the HRAA, which is the MSAA.  After seeing
that, I checked Nvidia's site and downloaded the HRAA brief (PDF).  It backs
up the statement made at Shary's by having this:

"GeForce3 has new technology for graphics hardware antialiasing in the form
of multisampling using a new
sampling pattern. The locations of the sample points for multisampling
enable the use of a "reconstruction
filter" that uses data from neighboring pixels to compute the final pixel
color. This increases the total
amount of work, and therefore slows down the frame rate marginally, but it
delivers much higher quality as
a reward. This new sampling pattern is called Quincunx, after the name of
the pattern of the five dots on
the "5" sided of a 6-sided die."
http://www.nvidia.com/Pages.nsf/Lookup/HRAA/$file/HRAA.pdf

"david woolfe" <dwoolfe@home.com> wrote in message
news:3aa30361.27887413@news...
> Well, this article strongly implies that all GF3 FSAA will use
> multisampling, with three options: 2x, 4x, and "quincunx."  But then,
> even after editing, this guy writes like crap, so your guess is as
> good as mine.
>
> http://WWW.TOMSHARDWARE.COM/graphic/01q1/010227/geforce3-26.html
>
> Over at Anands, here is another statement not quite definitve but
> implies that it uses multisampling for all AA:
>
> "The combination of the GeForce3's hardware based multisampling HRAA
> and its use of Quincunx patterns results in quality identical to what
> you would expect from a conventional 4-sample FSAA solution yet with
> the performance hit of what you would expect from a 2-sample FSAA
> solution."
>
> By referring to the "combination" of multisampling and quincunx he
> suggests that they are not synonymous, i.e. that quincunx is a further
> innovation on top of multisampling.  Guess we'll know when the board
> is released.
>
> On Sun, 04 Mar 2001 05:25:16 GMT, "fREoN" <none@nothanks.com> wrote:
>
> >"david woolfe" <dwoolfe@home.com> wrote in message
> >news:3aa15318.10067520@news...
> >> On Fri, 2 Mar 2001 19:39:50 -0500, tnaw <tnaw@MailAndNews.com> wrote:
> >>
> >> >The antialiasing performance, both Quincunx AA and
> >> >supersampling AA, is the most shining point of GeForce3.
> >>
> >> I don't mean to be a nitpicker, but GF3 uses multisampling, not
> >> supersampling.
> >
> >Isnt Quincunx the multisampling AA (supersample + multisample actually)
and
> >the rest of the modes are still the same supersampling method they use
now?
> >
> >
> >
>
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From: "Matt" <none@nothanks.com>
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