From: Jon M. Taylor <taylorj@ecs.csus.edu>
  To  : ggi-develop@eskimo.com
  Date: Thu, 20 Aug 1998 19:05:33 -0700 (PDT)

Re: libGGI3D simplicity

On Thu, 20 Aug 1998, Tomas Andrle wrote:

> Most people agreed on a triangle-only lib. But why shouldn't it support, say,
> points? 

	Using a depth buffer will give you points.

> Do you guys want to draw 10000 particles though putPixel and check the
> visibility yourselves? 

	You could have the drawing functions render to a depth buffer to
draw those 10000 particles from a set description or an algorithm. 

> [I suppose _games_ are what this is about] I don't know
> how many cards support 3d points right now (maybe none) 

	AFAIK and card that supports a hardware depth buffer (I know Glide
does) supports 3d points.

> 	What about the fog?

	Either use a fogging shader or render to a hardware or software
alpha-buffer.

Jon

---
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