hehe.. this topic was resumed in another thread, but i thought i'd better continue it here.


discussion: me whining about my interpolation technique taking ages to compute on my non-top modern device. simplified interpolation was mentioned. it took about 3 minutes to make the modifications and try the alternative method.. documenting this to save other developers those minutes....


here's one octave rendered with fast and slow interpolation methods
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8 octaves (first two octaves are unridged, subsequent are ridged)
Click image for larger version. 

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..and just for fun, here's the fast interpolation without shaping the fractional component, as i've seen it described
Click image for larger version. 

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pretty pictures any more serious developers are advised to investigate the simplex noise method.