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It's unlikely that you will find it used in any products. The code has to specially written to take advantage of edge antialiasing. First the solid polygons have to be drawn, then the D3DRS_EDGEANTIALIAS of the SetRenderState( ) function has to be enabled, then lines have to be drawn over the edges of any polygons which happen to form an outer edge of an object. The program must keep track of which polygons comprise this outer edge as the object rotates or camera moves.
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