I've found that the "pattern image function" will
switch up and down of an image. It uses the
section from <0,0,0> to <1,1,0>, and <1,1,0>
will be, on a heightfield, the foremost right
corner, when looking from -z towards z.
(Hope that explains something... Think about it)

So, in effect, you might be using different
parts of your pattern (not the y-planar
 <0,0,0> to <1,0,1>, but the z-planar), or
its used upside down. Don't know for sure though.

--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

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