"Thorsten Froehlich" <tho### [at] trfde> wrote in message
news:3da5ae73@news.povray.org...

>This is the case for Z-buffer based renderers like your $100 graphics card,
but not for POV-Ray.

I don't wanted to offend anyone by comparing povray with a  $100 graphics
card, sorry for that ;-)
Pov is a great renderer, I've tried many other free renderers like radiance,
bmrt, and 3delight but still pov is my favorite and has many features the
other programs don't have.
The thing I wanted to point out is that under certain conditions (env-maps
instead of true reflection for example) scanline renderes produce better
results than povray in less time.

>The gain from using mip-mapping in POV-Ray would be zero as far as quality
is concerned.

Of course povray can still make better images by using a high level of
supersampling, so you're right as far as quality is concerned, but I think
other methods than supersamling could save a lot of render time and still
produce high quality antialised images...

-sascha

"Thorsten Froehlich" <tho### [at] trfde> wrote in message
news:3da5ae73@news.povray.org...
> In article <3da59141$1@news.povray.org> , "Sascha Ledinsky"
> <sas### [at] opensyscoat> wrote:
>
> > does anyone know a compile/patch for pov that supports MIP-mapping for
> > image-maps or other types of interpolation than bilinear (bicubic would
be
> > nice).
> > Or the other way round: Is there a reason for mip-mapping isn't
supported (I
> > think every $100 graphics card can do it ;-)
>
> Because mip-mapping is pointless for a ray-tracer?  In essence the only
need
> for mip-mapping is to reduce artifacts when there is no anti-aliasing or
> anti-aliasing is very hard to do and interpolation of the image is out of
> the question as well.  This is the case for Z-buffer based renderers like
> your $100 graphics card, but not for POV-Ray.  The gain from using
> mip-mapping in POV-Ray would be zero as far as quality is concerned.
>
>     Thorsten
>
> ____________________________________________________
> Thorsten Froehlich, Duisburg, Germany
> e-mail: tho### [at] trfde
>
> Visit POV-Ray on the web: http://mac.povray.org

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