NetNews Offline 2/NetNews Offline Volume 2.iso/news/comp/sys/amiga/programmer/2054

Internet Message Format | 1996-08-05 | 3.5 KB

Path: informatik.tu-muenchen.de!fischerj
From: [e-mail] (Juergen "Rally" Fischer)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: Demos on graphiccards
Date: 26 Jan 1996 16:34:28 GMT
Organization: Technische Universitaet Muenchen, Germany
Distribution: world
Message-ID: <4eavqk$[e-mail]>
References: <[e-mail]>
NNTP-Posting-Host: hphalle5.informatik.tu-muenchen.de
To: [e-mail] (Jens Georg)
Originator: [e-mail]


In article <[e-mail]>, [e-mail] (Jens Georg) writes:
|>
|>
|>     Hello democoders,
|>
|>     have you ever thought about coding an intro/demo system-
|>     friendly ?

well, supporting gfx-cards needs some bytes more. IMHO we should
drop 40k intros and switch to 60k + gfx-cards.

|>
|>     I think, that any Amiga with graphiccard has twice and more
|>     the power the AGA chipset has; especially on ZIII-Amigas.

especially in chunky power, yes.

|>     For me as an A2030/25MHz owner with Picassao II gfxcard I'm of the
|>     opinion, that things like Phongs and bitmaptextures should be
|>     possible to run on a graphic-cardscreen.
|>     The only things missing is the copper, but I think there is less
|>     usage of it in modern effectroutines ?
yes.

|>
|>     I ported one of my old vectorroutines to systemfriendly usage
|>     of gfx-lib calls on a Picasso II screen and I didn't noticed any
|>     problems even when running in 256 colors (internal Chunkymode !).

well, supporting gfx-cards doesn't mean you need to fallback to
OS-routines for rendering. OS-rendering as option could speed up
on special hardware though.

|>
|>     See Gloom running systemfriendly !!

Yes, that's nice. But it's too slow. Not because of sysfriendly, but
bacause of suboptimal c2p and suboptimal mapping.

|>
|>     So, wouldn't it be possible to do AGA graphicroutines on a gfxcard ?
|>     The only speedproblem could be ZII with less than 3.5 MB/s, but is
|>     the AGA-chipram really faster ??

Well, even an A1200 can do about 4MB/sec, including chunky-to-planar, talking
about non realtimish games like doom, descent.
The myth that AGA makes this games impossible and that using a gfx-card
automatically gives you megasped is simply WRONG.

Well, the reason for doom on your Amiga beeing faster than on mine is simply
the cpu, not the gfx-card. seems that AGA is faster in this case, and
if I switch to a 2x1 or 2x2 modus, AGA simply blasts away your gfx-card,
c2p included. It's different on fast cpus, though, but on 030-25 AGA would
still be faster in 2x2 modi.

|>
|>
|>     Please reply to [e-mail], because I don't
|>     read this newsgroups everyday.
|>
|>     Yours,
|>
|>         Jens aka Prophet/Wizzcat.
|>
|>
|>     See you at The Gathering'95 .....
|>
|>
|> --
|>
|>  __________________________________________________________
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|>   e-mail : [e-mail]
|>            [e-mail]
|>
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|>
|>   fido   : 2:2444/2001.43
------------------------------------------------------------------------
   [e-mail] (Juergen "Rally" Fischer)   =:)