Hi Robert -- I'm confused by the CombineLODsVisitor at Optimizer.cpp line 1498. The apply(LOD&) method doesn't do anything unless the LOD is a PagedLOD. Not sure why the code is written this way. The combineLODs() method doesn't appear to be PagedLOD-specific, in fact there's nothing about this algorithm that would appear to require PagedLODs as far as I can tell. If apply(LOD&) really is PagedLOD-specific, then why not just use apply(PagedLOD&) instead? Paul Martz Skew Matrix Software LLC http://www.skew-matrix.com <http://www.skew-matrix.com/> 303 859 9466
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