On Fri, 30 Apr 1999, Mikl[ISO-8859-1] ós Fazekas wrote:
> Hello!
>
> > Certainly too costly to do per triangle. The options open to us for the
> > FX driver both require us to calculate the area of each triangle, and
> > either use this value to nudge the Z coordinates, or trust glide and
> > call grDepthBias (or what ever it is called) for each triangle. Either
> > way it means we are duplicating some of what must happen inside
> > grDrawTriangle.
>
> Do anybody know the exact specification of grDepthBiasLevel ? Will it simply
> add the parameter value/65535.0 to the generated pixel's z-fragment? The
> glide manual isn't clear for me about this.
I don't have a GLIDE manual - but I imagine that grDepthBiasLevel doesn't
know anything about the slope of the polygon.
Is there going to be a big overhead in calculating that?
Steve Baker (817)619-2657 (Vox/Vox-Mail)
Raytheon Systems Inc. (817)619-2466 (Fax)
Work: [EMAIL PROTECTED] http://www.hti.com
Home: [EMAIL PROTECTED] http://web2.airmail.net/sjbaker1
_______________________________________________
Mesa-dev maillist - [EMAIL PROTECTED]
http://lists.mesa3d.org/mailman/listinfo/mesa-dev
