[gdal-dev] Blocksize in VRT files

[Ozy Sjahputera]

I have been using the VRT format a lot lately and loving it!

I created the VRT files in two ways:
1). directly writing the XML file (usually using SimpleSource or 
ComplexSource)
2). using GDALAutoCreateWarpedVRT()

I found out that the VRT files created using the first method has 
blocksize of 128x128. While VRT files created using 
GDALAutoCreateWarpedVRT() has blocksize of 512x128.

Is there a way for the user to specify VRT file blocksize when creating 
the file using the two methods above?

Thanks
Ozy