Path: chuka.playstation.co.uk!news
From: alex@teeth.demon.co.uk (Alex Amsel)
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Re: 3D engines
Date: Thu, 10 Apr 1997 11:11:44 GMT
Organization: Into Beyond
Lines: 18
Message-ID: <334e5a3c.10502709@news.playstation.co.uk>
References: <3347dd19.3248416@news.playstation.co.uk> <3348D38C.1DC1@interactive.sony.com> <334A3648.1873@micronetics.com> <3349266B.7BD4@interactive.sony.com> <3349a345.33045335@news.playstation.co.uk> <334A3058.218B@interactive.sony.com> <334b3a68.199522@news.playstation.co.uk> <334B7A3E.D59@micronetics.com> <334e8f46.1862969@news.playstation.co.uk> <334BA0FE.43B8@micronetics.com> <01bc4554$03b82360$b756dec2@algorithm>
Reply-To: alex@teeth.demon.co.uk
NNTP-Posting-Host: teeth.demon.co.uk
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Newsreader: Forte Agent .99g/32.335

On 10 Apr 1997 02:03:25 GMT, "Russ Williams"
<russ@algorithm.demon.co.uk> did quoth at me:


>You could try writing to an array in 'real' memory, LoadImage-ing this to
>VRAM and then using it as a texture/sprite. This way, you'd get cached
>pixel plotting, and therefore quite a big speed increase :)

Only problem with this is the speed overhead. Err, not sure what I can
say regarding primitives available in the OT (there are some of use,
put it that way) but using a GsSprite or polygon will incur
unnecessary overheads. I haven't checked on the GsSprite
implementation (i.e. if it uses 'hardware' sprites if appropriate).
 

* Alex Amsel * Into Beyond Web Design & JAVA Programming *
* http://www.intobeyond.com  *  WWFC Play off ****ers'97 *
MM: "Hand the opposition the lead, the supporters love it"