When this change was made: http://darcs.ghostscript.com/darcsweb.cgi?r=fitz;a=commitdiff;h=20090408111643-f546f-f6260cbb51242492c945e915fa35586d9cfeef44.gz the default value for bpcfact was not updated from 1<<16 to 1 (which might not matter if all the cases in the following switc() are handled, but still...)