Re: [Mesa3d-dev] Re: [RFC] bump extension proposal..

[Holger W. <hwa...@ya...>]

On Tue, 13 Jun 2000, Stephen J Baker wrote:

> Whatever you implement needs to be something that at least *some* hardware
> can support - which means that we should be using some of the existing
> extensions rather than inventing new ones.

Does any current card supports a 'real' per pixel lighting ?
I believed phong shading is usually implemented by multitexturing using
the modulating texture as exponential lookup table.


> Also, if you stick with existing extensions, there is a better chance
> that programs not specifically written for Mesa will take advantage
> of this new code.  Note that Mesa is no longer the only game in town
> for Linux users - the nVidia driver already has bump-map extensions - and
> I fully intend my programs to make use of them.

Simple bumpmapping can be implemented on usual consumer cards using
multitexturing without any additional extension. On nVidia's website was a
'GLBump' demo a while ago (don't know, if it's still there ...), which
shows a simple and straightforward implementation of this.

Does anybody knows where to get the spec to nVidias bumpmapping 
extension ? I never heard about it until now.

- Holger