New ati card x700 series z-buffer compression up to 48:1

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New ati card x700 series z-buffer compression up to 48:1

I ask this because in the catalyst control center In the api specific
there is a place that is empty and it say "force 24 z-buffer". and
nothing else. Why this is not 48?

On the ati web site it say this
HyperZ™ HD
3-level Hierarchical Z-Buffer with Early Z Test
Lossless Z-Buffer Compression (up to 48:1)
Fast Z-Buffer Clear
Z Cache optimized for real-time shadow rendering
Optimized for performance at high display resolutions, including wide
screen HDTV resolutions

im i missing somthing?

 

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Archived from groups: alt.comp.periphs.videocards.ati (More info?)

"DDC" <whatsnow@yahoo.ca> wrote in message
news:5t68f1papl1grk9nb3kmc86s5it7f3t74l@4ax.com...
> I ask this because in the catalyst control center In the api specific
> there is a place that is empty and it say "force 24 z-buffer". and
> nothing else. Why this is not 48?

It should've said "force 24-*bit* z-buffer". 24-bit denotes the precision of
the depth values stored in the Z-buffer. It is not directly related to the
48:1 compression ratio.

> Lossless Z-Buffer Compression (up to 48:1)

This feature has been around since the Geforce3 days.

ATi cards need to start supporting the W-buffer, which serves the same
function as the Z-buffer, but is in floating point and distributes the
precision much more evenly across the depth range. 3dfx "invented" it in the
Voodoo1. Every nVidia card has it.

--
"War is the continuation of politics by other means.
It can therefore be said that politics is war without
bloodshed while war is politics with bloodshed."

 

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Archived from groups: alt.comp.periphs.videocards.ati (More info?)

First of One wrote:

> ATi cards need to start supporting the W-buffer, which serves the same
> function as the Z-buffer, but is in floating point and distributes the
> precision much more evenly across the depth range. 3dfx "invented" it
> in the Voodoo1. Every nVidia card has it.

Many ATi tweakprograms (for instance, Rage3D Tweak from www.rage3d.com)
offer an option to enable W-buffer. Further more, it still needs application
support so if a game doesn't support it, it won't be used.

=- Brian Dickens, the Netherlands

 

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Archived from groups: alt.comp.periphs.videocards.ati (More info?)

On Sat, 6 Aug 2005 20:25:55 +0200, "Brian Dickens"
<newsgroups@(remove-this)briandickens.demon.nl> wrote:

>First of One wrote:
>
>> ATi cards need to start supporting the W-buffer, which serves the same
>> function as the Z-buffer, but is in floating point and distributes the
>> precision much more evenly across the depth range. 3dfx "invented" it
>> in the Voodoo1. Every nVidia card has it.
>
>Many ATi tweakprograms (for instance, Rage3D Tweak from www.rage3d.com)
>offer an option to enable W-buffer. Further more, it still needs application
>support so if a game doesn't support it, it won't be used.
>
> =- Brian Dickens, the Netherlands
>

Thank you for the info.
I see that Overclocking is the major boost in 3d application and i'm
not ready to go for it. But the tweak you refer seems to be something
that i could go for but this function is hidden and i cant find the
program revel it.

But i've find THAT http://www.pgware.com/products/gameboost/
I will try this and see what it does.

a+

 

[Guest]

Archived from groups: alt.comp.periphs.videocards.ati (More info?)

Yeah, saw that in Rage3D Tweak, too. However, it doesn't mean the
appropriate registry key is still present in modern drivers.

--
"War is the continuation of politics by other means.
It can therefore be said that politics is war without
bloodshed while war is politics with bloodshed."


"Brian Dickens" <newsgroups@(remove-this)briandickens.demon.nl> wrote in
message news:11fa05bao6j6t23@corp.supernews.com...
> Many ATi tweakprograms (for instance, Rage3D Tweak from www.rage3d.com)
> offer an option to enable W-buffer. Further more, it still needs
> application support so if a game doesn't support it, it won't be used.
>
> =- Brian Dickens, the Netherlands
>