A few terrain displacement tests. Used 3delight and mental ray to achive these results. The mental ray renders were enhanced with normal maps. Bump mapping wasn't necessary for rendering with 3delight; displacement results hold high detail with low render times. If you use CrazyBump or Xnormal to generate normal maps, I find this shader very helpful for the tuning process. It removes the need to 'tweak' parameters in a separate app. The author's (Felix Reichert) site is here.
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