rec.autos.simulators

>Some say some of our physics conversations have been influenced by this
>substance,  but now there is proof ;).

>I have stuck some grass in my sim (basically to make me feel that I am
>making process while I figure out the culling method that is for me :)

>http://www.siroccoracing.com

> On Tue, 22 Jan 2002 13:48:05 +0000, Ashley McConnell

> >Some say some of our physics conversations have been influenced by this
> >substance,  but now there is proof ;).

> >I have stuck some grass in my sim (basically to make me feel that I am
> >making process while I figure out the culling method that is for me :)

> >http://www.siroccoracing.com

> Hey, cool grass; Carrera is so brown otherwise. :)
> Don't exactly know how its done in D3D, but try turning on mipmapping
> for the grass (and sand), and also, anisotropic filtering does a lot
> of good on these otherwise shimmering textures (I can't get mipmapping
> to work in F1-2001 and it really looks awful; epileptic seizure alert
> heaven, lol).

> I don't use mipmapping on roads btw (a bit hardcoded based on
> texturename), since that looks better without, IMHO.

> Ruud van Gaal
> Free car sim  : http://www.marketgraph.nl/gallery/racer/
> Pencil art    : http://www.marketgraph.nl/gallery/

>Just a warning that on most graphics card turning off mipmapping will incur
>a performance penalty due to having to keep refetching texels out of the
>high res texture while drawing the distant road polys (e.g., thrashing the
>texture cache on every few pixels).  You might try instead playing with the
>MIP LOD bias (I forget what it's called in DX these days), where you can
>shove the mips out to where it starts to look "sparkly" instead of "blurry",
>but not be as sparkly as with no mipmapping at all.

> Just a warning that on most graphics card turning off mipmapping will incur
> a performance penalty due to having to keep refetching texels out of the
> high res texture while drawing the distant road polys (e.g., thrashing the
> texture cache on every few pixels).  You might try instead playing with the
> MIP LOD bias (I forget what it's called in DX these days), where you can
> shove the mips out to where it starts to look "sparkly" instead of "blurry",
> but not be as sparkly as with no mipmapping at all.  Ideally, you would be
> able to adjust this per-texture.  Also, you can get a free anisotropic
> filtering effect by making your road textures stretched vertically, so that
> when viewed in perspective, the texels are approximately square (e.g., 3:1
> or 4:1 aspect ratio).

> > Just a warning that on most graphics card turning off mipmapping will
incur
> > a performance penalty due to having to keep refetching texels out of the
> > high res texture while drawing the distant road polys (e.g., thrashing
the
> > texture cache on every few pixels).  You might try instead playing with
the
> > MIP LOD bias (I forget what it's called in DX these days), where you can
> > shove the mips out to where it starts to look "sparkly" instead of
"blurry",
> > but not be as sparkly as with no mipmapping at all.  Ideally, you would
be
> > able to adjust this per-texture.  Also, you can get a free anisotropic
> > filtering effect by making your road textures stretched vertically, so
that
> > when viewed in perspective, the texels are approximately square (e.g.,
3:1
> > or 4:1 aspect ratio).

> Thanks for the tips Dave!  I am very new at the old 3d graphics lark ;).
>   I have only really started, there are a few things I dont understand
> about your helpful tips, but it gives me something to go off and
> research more fully :)

> I am hoping to leave the graphics to the side fairly soon and get into
> the "real" stuff, i.e. the physics and networking :).  It'll not be very
> good for screenshots for a while, but its the core of the sim nonetheless
:)

> Thanks again!
> Ash

> PS Am I right in thinking your are of MGI / viper / heat fame?

>I'd say***the graphics once you get a box or something on the screen and
>go straight for the physics (the fun stuff, in my opinion)...