Hello, I have some jpeg2000 files, and i know this format support arbitrary overviews, GdalRasterBand::RasterIO will automatically use it in downsampling mode.
But i noticed that the vrt file generated by those jp2 files do not has arbitrary overviews (GdalRasterBand::HasArbitraryOverviews return FALSE). So here goes my question, dose GdalRasterBand::RasterIO of VRT format still using arbitrary overviews of origin files? It will be very helpful if anyone can answer my question.
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