 | | | Camera projections & elliptical filtering | Camera projections & elliptical filtering 2004-03-08 - By kim aldis
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There can be a problem where camera projections don't map well to polygons
that are skewed to the view from the camera. The effect is a sort of
triangulated breakup of the texture where no one triangle from a poly is
projected the same as any other. The only solution is to make polys smaller,
usually by upping the subdivision or increasing NURBS step sizes.
The other thing you could find is a softening of the texturing. Enough to
show a difference if you're using a camera projection matched against liv e
action.
> -- --Original Message-- --
> From: owner-xsi@(protected)
> [mailto:owner-xsi@(protected)] On Behalf Of Bernard Lebel
> Sent: 08 March 2004 17:32
> To: xsi@(protected)
> Subject: Camera projections & elliptical filtering
>
> Hello,
>
> Has anyone had any problem with camera projections and
> elliptical filtering?
>
> The texture folks here use camera projections most of the
> time, and thye convert to pyramidal filtered .map files.
> Now, since we have to use elliptical filtering to get good
> results with pyramidal files, we get prettyweird artefacts. I
> mean serious stuff, the kind that is not usable (the various
> resolution textures blend awefully together).
> Now after a reading of the mr docs, I begin to suspect that
> it is related to camera projections, even though they are
> generally frozen before rendering.
>
> Any help or pointer in the right direction would be quite wlecome.
>
>
> Thanks
> Bernard
>
>
>
> http://www.bernardlebel.com
> http://www.xsimontreal.com
> http://www.xsibase.com
>
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