Path: chuka.playstation.co.uk!scea!greg_labrec@interactive.sony.com
From: jpretori@uvic.ca
Newsgroups: scea.yaroze.programming.3d_graphics
Subject: Re: How fast is fast?
Date: Thu, 26 Jun 1997 22:22:00 -0700
Organization: University of Victoria
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Ed Federmeyer wrote:
> 
> I've read specs that say the PSX is capable of up to "360K shaded &
> textured polygons per sec."  (Data from the Next Generation Online web
> site in particular).

Hi Ed, 

I haven't explored the issue very thoroughly, but I've been able to
manipulate a 20,000 polygon object (gouraud shaded, no light source
calc.) at roughly 6-9 frames/sec.

The 360K polygon/sec spec. that we've all heard may be slightly
exagerated but it depends on how the object is defined, and doesn't
necesarrily indicate that the system can generate a single 360K polygon
every second (i.e. 6000 polygon object being drawn 60 times/sec = 360K
polygons/sec.)

I have not inspected the morph demo, but If it's not using double
buffering this will have a dramatic effect on performance if you
increase the polygon count beyond a certain point.

I must admit that I am quite pleased with the performace of the system
so far. It seems to me that Sony did a very good job with the graphics
library.


James Pretorius