I had a simular problem with lathe using bezier splines. I tried sturm. It didn't
help. Then I changed a few control points and all the
artifacts disapeared.

Xuan Baldauf wrote:

> Hello,
>
> there is a bug in povray-3.5-rc5 on linux-2.4.19-pre (AMD
> Duron 1000MHz): Many graphical artefacts appear.
>
> Just see the attached scene. There are several arcs of
> artefacts (one big arc below, two small arcs above).
> Additionally, at the left and right border, there are some
> pixels which remain black.
>
> Is there any workaround?
>
> Attached:
> - The scene
> - the corresponding makefile for linux
>

>
> --

>

> Medium.net Internet Server Software
>
>   --------------------------------------------------------------------------------
>
> all: Pokal.v2.bug.png
>
> %.png: %.pov
>         /usr/lib/povray35/povray /usr/lib/povray35/povray.ini +I$< +O$@ +W840 +H630
+FN +SP8 +EP8 +V +L/usr/lib/povray35/include +UA +D +P
>
>   --------------------------------------------------------------------------------
>
>                           Name: Pokal.v2.bug.pov
>    Pokal.v2.bug.pov       Type: POV-Ray scene file
(application/x-unknown-content-type-POV-Ray.Scene)
>                       Encoding: base64

--
Have Fun!

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