Is there any way to directly access the Z buffer of a 4D/60T? I need to both read and write the Z buffer on a pixel level. -Tom Thomas C. Palmer NCI Supercomputer Facility c/o PRI, Inc. Phone: (301) 698-5797 PO Box B, Bldg. 430 Uucp: ...!uunet!ncifcrf.gov!palmer Frederick, MD 21701 Arpanet: palmer at ncifcrf.gov