mesa3d-dev

[Mesa3d-dev] GL_EXT_vertex_weighting

[Karsten W. <kn...@gm...>]

Hi!

Is anybody working on a GL_EXT_vertex_weighting implementation
for Mesa? Last time I checked this extension was still
unsupported.

I'm currently looking for an interesting university project and
would like to do something useful and was considering doing
this implementation (together with a little demo).

Any comments?

bye,
  Karsten

-- 
Karsten Weiss   | kn...@gm... (private) or
ASK FOR PGP KEY | kn...@ru... (university)

Re: [Mesa3d-dev] GL_EXT_vertex_weighting

[Brian P. <br...@va...>]

Karsten Weiss wrote:
> 
> Hi!
> 
> Is anybody working on a GL_EXT_vertex_weighting implementation
> for Mesa? Last time I checked this extension was still
> unsupported.

No one is implementing it in Mesa.


> I'm currently looking for an interesting university project and
> would like to do something useful and was considering doing
> this implementation (together with a little demo).
> 
> Any comments?

This could be a very compilicated extension to implement.
I'd try to find something easier to do for a school project.

BTW, there may be an official ARB version of this extension in
the near future.

-Brian

Re: [Mesa3d-dev] GL_EXT_vertex_weighting

[Li M. <mi...@mp...>]

Hi,

But maybe the Vertex Program(also called Vertex shader) is a more
general and uniform way to do such things. It even can do much more
than the vertex weighting.

However, it seems that to implement the vertex program extension is a
hard work because it modifies the traditional pipelines and involves
transformation, lighting, fog, clipping etc.

By the way, the specification has been already released by Nvidia on
their web page.

Li Ming.


Karsten Weiss wrote:

> Hi!
>
> Is anybody working on a GL_EXT_vertex_weighting implementation
> for Mesa? Last time I checked this extension was still
> unsupported.
>
> I'm currently looking for an interesting university project and
> would like to do something useful and was considering doing
> this implementation (together with a little demo).
>
> Any comments?
>
> bye,
>   Karsten
>
> --
> Karsten Weiss   | kn...@gm... (private) or
> ASK FOR PGP KEY | kn...@ru... (university)
>
> _______________________________________________
> Mesa3d-dev mailing list
> Mes...@li...
> http://lists.sourceforge.net/mailman/listinfo/mesa3d-dev

Re: [Mesa3d-dev] GL_EXT_vertex_weighting

[Gareth H. <ga...@va...>]

Li Ming wrote:
> 
> But maybe the Vertex Program(also called Vertex shader) is a more
> general and uniform way to do such things. It even can do much more
> than the vertex weighting.
> 
> However, it seems that to implement the vertex program extension is a
> hard work because it modifies the traditional pipelines and involves
> transformation, lighting, fog, clipping etc.
> 
> By the way, the specification has been already released by Nvidia on
> their web page.

Yes, and it's NVIDIA proprietary, which means you can't implement it. 
And, the spec is ~75 pages long.  Perhaps a little ambitious for a
school project...

-- Gareth

Re: [Mesa3d-dev] GL_EXT_vertex_weighting

[Brian P. <br...@va...>]

Li Ming wrote:
> 
> Hi,
> 
> But maybe the Vertex Program(also called Vertex shader) is a more
> general and uniform way to do such things. It even can do much more
> than the vertex weighting.
> 
> However, it seems that to implement the vertex program extension is a
> hard work because it modifies the traditional pipelines and involves
> transformation, lighting, fog, clipping etc.
> 
> By the way, the specification has been already released by Nvidia on
> their web page.

Read the "IP Status" section.  I don't think anyone outside of
NVIDIA can implement the extension without their permission.

-Brian