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By default, RenderMan will displace in Object space. This is typically desired for sculpted models. But for some objects this can result in discontinuities. For example, a set of objects displaced together like a set of planes made into an environment piece. In object space these may result in gaps or discontinuity between patches like below.

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To correct for this particular scenario, you can select World Space to achieve the result below using the same eight patches. This will solve issues like ocean planes, cliffs, and rocks, where displacement is shared across the shapes.

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Use Displacement Direction

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