文章提出了一种基于球形光线追踪的位移贴图算法。

In this paper, a displacement mapping algorithm based on sphere ray-tracing is introduced.

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再在表面利用一个位移贴图为景观增加自然的起伏。

A further displacement map on the surface itself is added for additional natural undulation to the landscape.

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主题包括烘烤的综合几何位移贴图，渲染结果，通过正确的AO通道，等等。

Topics include baking displacement maps from combined geometry, rendering the results, correct AO passes, and more.

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