Re: [glean-dev] texgen test

[Brian S. <br...@gl...>]

At 07:44 AM 12/15/00 -0800, you wrote:
>glean itself has never required glut, although the tiff tools
>(showtiff and difftiff) have.  So technically there's a new
>dependency, but only for the glean executable.
>
>...
>
>Sounds like we could use a couple of new functions in geomutils.cpp or
>glutils.cpp to generate spheres.  (We already have utilities to
>generate other kinds of geometry for testing, so this would probably
>fit right in.)

I'm working on this right now.  What I'm planning on doing is the following:

-- Adding two objects, one to generate spheres, and one to generate 
tessellated planes (not sure if the latter is already covered by one of 
those, I'll check).

-- Adding an object, GeomRenderer, that can be used in conjunction with 
these objects, to render primitives in a variety of ways.  One of my 
concerns with some tests I'm writing is that drivers do things wildly 
differently sometimes depending on which method you use to pass in the 
geometry, so GeomRenderer will take a pile of data and render it for you in 
one of a host of ways:

Immediate Mode: glVertex
Vertex Arrays: glArrayElement
Vertex Arrays: glDrawArrays
Vertex Arrays: glDrawElements
Any of the above baked into a display list.

It also allows you to specify which parameters are enabled or disabled 
(vertices, normals, colors, texcoords, etc.)

This way I hope it'll be easy to take the texgen test and others I'm 
writing and just have them iterate over what they're already doing 10 times 
or so, each done using a different geometry path.  I think it should be 
really handy.

.b