On Jul 13, 8:50 am, Olivier3...@[EMAIL PROTECTED]
wrote:
> On Jul 12, 5:35 pm, dugla <douglass.tur...@[EMAIL PROTECTED]
> wrote:
>
> > Here is a test I did using a displacement mapped sphere. There is an
> > artifact at the seam that I can't figure out how to
remove:https://dugla.backpackit.com/pub/1156838
>
> > Can someone please suggest how to remove this artifact? Thanks.
>
> Did you give the texture map a periodic wrap mode? That would be "-
> mode wrap" when preparing the texture with either 3Delight or prman
> (tdlmake/txmake).
>
> Olivier
That's the answer! Problem solved. Thanks a million for that.
One thing that was compounding the situation was that I was blurring
the texture using Photoshop before using it for displacement. Because
this bluring does not have the option of filtering across the seam,
the artifact reappears since a discontinuity gets baked into the
texture pixels prior to tdlmake doing it's thing.
Note, I tried blurring with tdlmake's "-blur N" option for values of
2, 4, and 8 but at render time I notice little if any actual
blurring.
Anyway, the blurring issue is a minor issue that I'll just futz with
and solve. Finding a solution for the seam artifact is a BIG help.
Cheers,
Doug
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