[Raislin77it]

Originally Posted by idrougge

A 16*16 bob is a 32*16 bob in 15 out of 16 positions.
A 32*32 bob is a 48*32 bob in 15 out of 16 positions.

???

ah yes, the "shift" value!
this explain the difference from one 32x32 pxl bob and 4 16x16 pxl bob