From: ross::barna (rbarna++at++neochi.com)
Date: 03/27/2000 20:42:57
texture->setFilter(PFTEX_MINFILTER, PFTEX_MIPMAP_TRILINEAR);
bingo! what sort of performance penalties will i pay on {onyx2, octane
MXE, o2, linux box with no accel}.
-ross
On Mon, 27 Mar 2000, Angus Dorbie wrote:
> This drop off is due to mip mapping.
>
> You can improve quality by selecting linear_mipmap_linear filtering,
> right now you have linear_mipmap_nearest, or nearest_mipmap_linear, I
> forget which. This is also known by it's IrisGL nomenclature of
> trilinear mipmapping. So set the pfTexture minfilter to
> PFTEX_MIPMAP_TRILINEAR.
>
> Quality will still drop off but it will do so smoothly. Alternatively
> you can select simple bilinear minification and you'll see aliasing
> instead of the lower resolution filtering.
>
> Cheers,ANgus.
>
> ross::barna wrote:
> >
> > i am doing some detailed texture mapping (readable text and stuff) under
> > pfLinux. i am wondering why there is an texture quality drop-off that
> > appears to depend on distance from texture and window size. also, i would
> > like to know if i can turn this off and render the entire texture in the
> > same quality. is the artifact that is in the included image a feature of
> > MipMapping?
> >
> > i want the highest fidelity renderings of the texture as possible.
> >
> > thanks,
> >
> > ross
> >
> > ------------------------------------------------------------------------
> > Name: journalImage04.jpg
> > journalImage04.jpg Type: JPEG Image (IMAGE/jpeg)
> > Encoding: BASE64
>
>
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