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In your displacement tutorial example code, what would happen if we could turn off the Catmull-Clark subdivision function? for example, if the rtcNewSubdivisionMesh() function had a parameter to turn off Catmull-Clark.
Does the user displacement function Embree calls with x number of points are the actual vertices of the new geometry done by the Catmull-Clark function? Basically, what are the points? just any random position on the mesh?
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You probably need displacement on triangle meshes? This is not supported currently.
The displacement callback function is called for a number of points on the smooth catmull clark subdivision surfaces. The callback function can move these points. For quads in the original subdivision mesh, the points form a regular grid pattern.
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Thank you.

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