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landscape question.

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taking into account a 2048x2048 landscape made in landscape studio.
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how man *faces* does that contain (excluding the repeat effect)?
 

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That would depend on the size of the heightfield, not the terrain texture.

For every pixel on the heightfield there are 2 triangles. Also keep in mind that the view distance determines how many triangles are actually stored in vertices and processed in a single frame.

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