Path: chuka.playstation.co.uk!toby
From: toby@angst.forefront.com.au (Toby Sargeant)
Newsgroups: scea.yaroze.programming.2d_graphics
Subject: Re: Texture Mapping and the phantom playstation II [Was: Re: GPU Packets...]
Date: 26 Feb 1998 01:07:50 GMT
Organization: PlayStation Net Yaroze (SCEE)
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Message-ID: <slrn6f9gci.kis.toby@ns.forefront.com.au>
References: <6d0qqb$acg1@emeka.playstation.co.uk> <slrn6f98nb.epv.toby@ns.forefront.com.au> <34F4B1C4.F190C1BB@netmagic.net>
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On Wed, 25 Feb 1998 16:05:24 -0800, Elliott Lee <tenchi@netmagic.net> wrote:
>Toby Sargeant wrote:
>	[...]
>> <speculation>
>> 
>> If sony ever releases the playstation successor that they're not working on,
>> and if they travel down the backwards compatible path that the installed base
>> of playstation software owners would no doubt demand, won't this mean we'll
>> never see perspective correct texture mapping, or z buffering?  There are a
>	[...]
>> Toby.
>
>I would hope that the new GTE/GPU would have the above-mentioned
>improvements.
>I would also hope that for the backwards compatibility they would simply
>have the current library calls as wrappers around the new calls with a
>couple
>of flags set to disable perspective correction (among other things).

with psx libs statically bound to executables, this isn't an option. the
only way they could do it is by defining extra GPU packet types to cover
the situation, which means that (some of) the GTE functionality needs to
be reimplemented in the GPU, and the GPU has to retain a lot of silicon
in order to run old software that it could otherwise ditch. I guess we
won't be seeing the end of those ugly texturing artifacts.

><speculation><ponder>
>  At least, that's how I would do it.  :P
></ponder></speculation>
>
>- e!
>  tenchi@netmagic.net
>  http://www.netmagic.net/~tenchi/yaroze/

Toby.