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- From: paulk@terapin.com (Paul Kienitz)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: Hardware Reference Manual
- References: <2098@lysator.liu.se>
- Message-ID: <paulk.2qat@terapin.com>
- Date: 12 Dec 92 10:42:29 PST
- Organization: BBS
- Lines: 11
-
- > As amigadisplays are based on bitplanes and VGA/SVGA cards is based
- > on 1Byte==1Pixel technique, I would say it is impossible to get the > same
- kind of texturemapping on an amiga as it of an SVGA display.
- > I.E. I belive it cannot be done, whoever writes the amiga-port.
-
- That's true if we try to do it by writing ONE pixel at a time to the
- bitplane display. But who says we have to set each pixel separately?
- Figure out the colors of groups of 32 pixels, flip the bits "sideways",
- and write whole longwords to the bitplane memory. The overhead of
- WritePixel with bitplanes doesn't have to enter the picture at all.
- There's no reason texture mapped stuff can't be done with bitplanes.
-