Path: chuka.playstation.co.uk!news
From: Jim <jim@micronetics.com>
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Perplexing question
Date: Wed, 23 Apr 1997 22:25:06 +0100
Organization: PlayStation Net Yaroze (SCEE)
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Here's a strange one fer you all.


	I was tweaking my world editor last night can 
	came across this.

	I though I had introduced a serious bug, but..

	I was drawing around 100 flat textured quads all at identical
	coordinates.  Basically 100 poly on top of each other, 
	and the frame rate was awful.  Really crawling.

	But if I lay the polys edge on so I get a 10 x 10 playing 
	field, it trotts along at 50 fps no prob.

	Now this has me a little perplexed.  I have it working as it
	should now, but why did it go soooo slowly when each poly 
	was at the same coords?

`	The only thing I can think of is that each poly occupied the
	same slot in the order table.

	Does this make sense?  Ideas anyone?


	Jim