Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!mips!sgi!shinobu!odin!cashew.asd.sgi.com!kurt
From: kurt@cashew.asd.sgi.com (Kurt Akeley)
Newsgroups: comp.sys.sgi
Subject: Re: Fastest way to find world -> screen mapping
Keywords: transform world coords screen coords matrix inversion
Message-ID: <1991Jun12.000333.13911@odin.corp.sgi.com>
Date: 12 Jun 91 00:03:33 GMT
References: <1991Jun4.031535.18607@resmel.bhp.com.au> <1991Jun4.235906.4447@odin.corp.sgi.com> <1991Jun6.054818.29804@cs.umn.edu>
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Reply-To: kurt@cashew.asd.sgi.com (Kurt Akeley)
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In article <1991Jun6.054818.29804@cs.umn.edu>, slevy@poincare.geom.umn.edu (Stuart Levy) writes:

[stuff deleted]

|> I've wanted to do this too, with yes, destination being the frame buffer.
|> This may not be what Mr. Monks has in mind, but for example what is
|> the easiest way to draw a "wide point" -- a blob of fixed screen-space
|> size, in the location appropriate for a 3-space point, and hidden by
|> surfaces in front of it?  GL supports wide lines directly but I don't find
|> anything similar for points.  Single-pixel points can be hard to see,
|> especially on video.

The upcoming 4.0 release supports points of arbitrary size on many
platforms.  Definitely GT, GTX, and VGX.  Not sure about Personal Iris
products.

-- Kurt