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From: robert@texas.esd.sgi.com (Robert Skinner)
Newsgroups: comp.graphics
Subject: Re: A-Buffer source (and plotting lots of triangles)?
Message-ID: <10588@odin.corp.sgi.com>
Date: 19 Jul 90 16:33:57 GMT
References: <1990Jul16.225553.2623@maths.tcd.ie> <1264@idunno.Princeton.EDU> <104 <31667@masscomp.ccur.com>
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Reply-To: robert@sgi.com
Organization: Silicon Graphics Inc., Entry Systems Division
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In article <31667@masscomp.ccur.com>, mark@masscomp.ccur.com (Mark
Thompson) writes:
|> Reply-To: mark@calvin.westford.ccur.com (Mark Thompson)
|> Organization: Concurrent Computer Corp. Westford MA.
|> 
|> In article <10491@odin.corp.sgi.com> robert@sgi.com writes:
|> >  [my description of my alpha buffer and Z buffer renderers deleted]
|> >
|> >The two algorithms produced almost identical images.
|> 
|> I'll bet those images weren't identical when rendering piles of
|> overlaping partially transparent objects!

right, I didn't bother to implement transparency, because I didn't 
need it, and I didn't know if I would end up using the Z buffer. 

The Z buffer algorithm can't do transparency.  
I stopped just short of stating (what I thought) was obvious.

Robert Skinner
robert@sgi.com

	"What can go wrong?"

			- Calvin & Hobbes