RE: [Algorithms] Bullets on walls

[Giovanni B. <ba...@pr...>]

In DirectX, there is a ZBIAS stuff that let you set a priority order
(integer) when Z matches. It is a renderstate. But looking at the caps, it
is not supported in every boards I have tried. I heard it is an old thingie
of first Voodoo boards.
I had not found something similiar in OpenGL.

---
Giovanni Bajo
Lead Programmer

Protonic Interactive
www.protonic.net

a brand of Prograph Research S.r.l.
www.prograph.it


> -----Original Message-----
> From: gda...@li...
> [mailto:gda...@li...]On Behalf Of Angel
> Popov
> Sent: Friday, July 21, 2000 9:27 AM
> To: gda...@li...
> Subject: Re: [Algorithms] Bullets on walls
>
>
> > Hi!
> > I added wallmarks in my 3d engine but when I fire on the border
> of a wall
> I would like to clip the wallmark to the wall.
> >
> > I have some ideas but I think they are a bit slow... (manual clipping,
> texgen, stencil?)
> >
> > How do you do this?
> >
> > Thanks for any help!
>
> An extention like glDepthFunc( GL_ALMOST_EQUAL ) will be quite usefull for
> things like wallmarks and loosely projected shadows.
> Does anyone know if something like this is avaiable on current hardware?
>
>
>
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