William F Pokorny <ano### [at] anonymousorg> wrote:
> On 2/3/25 18:44, William F Pokorny wrote:
> > Of note there is some sort of top / right bug in the way the bump_map{}
> > is being handled for use in the normal{} block which has existed for a
> > long time.
>
> I'd aimed to quickly fix this and post back here pointing to detail to
> povray.beta-test... What is going on is proving difficult to completely
> understand. I'll post more to povray.beta-test when (and if) I can
> figure it out.
>
> Bill P.

I don't know if this is in any way related, but maybe this (and there is a link
in the article to similar) will spark some ideas:

https://iquilezles.org/articles/tunnel/

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