Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!ucbvax!CASTOR.WUSTL.EDU!weinhous From: weinhous@CASTOR.WUSTL.EDU ("Martin S. Weinhous") Newsgroups: comp.sys.sgi Subject: # of overlay planes Message-ID: <8908161833.AA12079@castor.wustl.edu> Date: 16 Aug 89 18:33:46 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 26 Thant, In your note to info-iris you asked ... TT> Four bits are for overlay and four are for window I.D. That's how the TT> machine does arbitrarily shaped and/or overlaping windows in different TT> modes that can be independently swapped, all without any performance hit. TT> TT> If you talk about what you need the 8 overlays for, somebody may have a TT> a better/workable solution. (What machine had 24 bits of color AND 8 bits TT> of overlay?) Many image processing systems, particularly those intended for the processing of gray-scale images provide the capability of using 8 bit planes of overlay. This allows the user to, easily, non destructively, annotate the gray-scale images with up to 256 colors. I'd like to do the same on my 4D120-GTX, but can't. And, while I have you on the "line." Note the TT> prefix to lines from your message. I had to ~m (interpolate) your message then use vi to change the first character fromto TT> for each line. Why dosen't set indentprefix work for Mail? Any suggestions? -- Marty Weinhous <...!uunet!wucs1!dinorah!weinhous>