<div dir="ltr"><div>Hi all,</div><div><br></div><div>It's been my understanding that GDAL's RasterIO (most current version) uses overviews when available, implicitly. Is this also true for VRTs and warped VRTs or is not true? </div><div><br></div><div>I ask because 1) in reading from a warped VRT (using vsicurl) I'm not seeing use of the overviews in the GeoTIFF source that surface in the VRT, and 2) in reading the source of gdalwarp_lib.cpp I see that it has its own code for navigating overview levels and does not rely on any implicit overviews.</div><div><br></div><div>Thanks in advance,</div><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr">Sean Gillies</div></div>
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