Article View: comp.sys.amiga.tech
Article #14Blitter and RastPort->Mask
From: John J. Feiler
Date: Tue, 13 Jun 1989 00:29
Date: Tue, 13 Jun 1989 00:29
18 lines
1293 bytes
1293 bytes
I've been mucking around with the blitter trying to get some images blitted quickly to a 4-plane screen, and something is changing the Mask field in the RPort structure of the window. Is the blitter doing this? I'm stuffing the values into the blitter registers by hand, and the images are displaying fine on the screen, but when I try to write text to the window, nothing works since the Mask field gets set to 0x0, instead of 0xFF. Any, ideas?? Am I missing something simple? ============== John Feiler "Life's like a jigsaw, you get the 709 Locust #7 straight bits, but there's something Pasadena, CA 91101 missing in the middle..." jjfeiler@tybalt.caltech.edu -- XTC What's the difference between a duck? ==============
Technical Details
Message-ID:
<11020@cit-vax.Caltech.Edu>Path:
arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!apple!bionet!ames!elroy!cit-vax!tybalt.caltech.edu!jjfeilerShow Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!apple!bionet!ames!elroy!cit-vax!tybalt.caltech.edu!jjfeiler From: jjfeiler@tybalt.caltech.edu (John J. Feiler) Newsgroups: comp.sys.amiga.tech Subject: Blitter and RastPort->Mask Summary: Blitter wierdness Keywords: blitter, restport, spam Message-ID: <11020@cit-vax.Caltech.Edu> Date: 13 Jun 89 00:29:37 GMT Sender: news@cit-vax.Caltech.Edu Reply-To: jjfeiler@tybalt.caltech.edu.UUCP (John J. Feiler) Organization: California Institute of Technology Lines: 18