news:1g03c5r.1ugst2b961wgfN%PASDEPUBnoe.falzon@tiscali.fr...

| Does someone have an idea ?
|

Height-fields themselves are pretty half-455ed, and making one from an
image_map only adds another layer of half-455ness. I'm not suggesting
that your effort is in any way half-455ed. The image map you have
generated is quite nice, but even an isosurface created from an image
map is going to be jagged unless the image map is *huge*.

The first step towards getting a decent looking mountain will be to
describe a similar looking map with functions. That will solve your
resolution problems without using any memory. Once you have the
function, you can create an isosurface if you have the patience for it
to render.

If memory is a problem at all, then a high-resolution height-field like
this isn't going to leave much memory for additional elements in the
scene. Doesn't matter anyway, generalized algorithms like the
height-field give 5h!++y results, and increasing the resolution to
stupid levels only makes them somewhat less 5h!++y, not good. My
suggestion would be to create a medium resolution height-field and to
then add a granite or similar normal.

 -Shay

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