GDALRegenerateOverviewsMultiBand(): make sure than when computing large reduction factors (like > 1024)… #10720
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…ge reduction factors (like > 1024) on huge rasters does not lead to excessive memory requirements The new code paths are well tested by existing tests in tiff_ovr.py that set GDAL_OVR_CHUNK_MAX_SIZE
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… on huge rasters does not lead to excessive memory requirements
The new code paths are well tested by existing tests in tiff_ovr.py that set GDAL_OVR_CHUNK_MAX_SIZE