From: teunis <teunis@computersupportcentre.com>
  To  : ggi-develop@eskimo.com
  Date: Mon, 17 Aug 1998 17:13:03 -0700 (MST)

Re: 3d

On Mon, 17 Aug 1998, James A Simmons wrote:

> On Mon, 17 Aug 1998, Torgeir Veimo wrote:
> 
> > James A Simmons wrote:
> > > 
> > > Why we are discussing this. I have been working with the TGA video adapter
> > > and have notice it supports gourand shading and z buffering. It does not
> > > have texture mapping. Alot of cards have gourand shading and z buffering.
> > > How should we support this? Any ideas?
> > 
> > There is no "correct" sollution for this. One can provide a common API
> > for rasterization, but not for all kinds of acceleration. Drivers which
> > implements such a common API are called mini client drivers (in the SGI
> > / MS OpenGL driver kit).
> >
> 
> I will not start this flame war again. Their are some very common high end
> acceleration in many cards. The thing that varies the most is the texture 
> mapping functions. 

And on the -really- high-end cards (ie. 3DFX-2 and the like :), the entire
card is programmable ergo next response:

> > There allready exist a minor API in Mesa for rasterization, which means
> > a driver can accellerate these.
>  
> I like to see library independent accelleration. Threw ioctl not special
> library stubs. 

Not likely.  There's really no compatibility below the OpenGL/whatever
layer.  None whatsoever.  Even OpenGL doesn't really cut it with some
hardware (OpenGL is too bare-metal for them or they're planar hardware)
but it'll do for now.

:me is warming up :)
G'day, eh? :)
	- Teunis