Path: chuka.playstation.co.uk!news
From: Alex Herbert <aherbert@ndirect.co.uk>
Newsgroups: scee.yaroze.freetalk.english
Subject: Re: Primitive Naming Standard
Date: Tue, 13 Oct 1998 16:12:42 +0000
Organization: PlayStation Net Yaroze (SCEE)
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James Shaughnessy wrote:

> I am yet to get into dynamic TMDs so when I do I will go with
> whatever we all agree on is an ideal standard.
> So forgive me for asking a stupid question, but how can a
> *gouraud shaded* triangle (G3 above) also have flat pigment?
> Isn't that a contradiction?  Or in N4GT, how can a *non-shaded* quad
> have a gradient, when non-shaded means no normals will be calculated?
> And I thought gradient meant the *same thing* as gouraud shaded?
> I'll put money on this being a stupid question and I'm having
> some form of mental block, but I /thought/ I understood all this!
>

No, there are 2 different ways of shading a polygon.  Gouraud and
Gradient.  Gouraud uses normals to 'adjust' the colour of each vertex.
Gradient has explicit RGB values for each vertex, and can also have a
single normal for flat shading if you want.  There are many combinations.


Herbs