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- Path: informatik.tu-muenchen.de!fischerj
- From: fischerj@informatik.tu-muenchen.de (Juergen "Rally" Fischer)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: doubling pixels horizontally
- Date: 12 Feb 1996 15:56:18 GMT
- Organization: Technische Universitaet Muenchen, Germany
- Distribution: world
- Message-ID: <4fnnv2$e8j@sunsystem5.informatik.tu-muenchen.de>
- References: <4f4ibc$gl9@news.cs.tu-berlin.de> <591.6610T1165T2102@login.eunet.no> <1045.6611T753T2256@vip.cybercity.dk> <695.6611T1193T2676@login.eunet.no> <729.6615T699T2129@vip.cybercity.dk>
- NNTP-Posting-Host: hphalle5.informatik.tu-muenchen.de
- Originator: fischerj@hphalle5.informatik.tu-muenchen.de
-
-
- In article <729.6615T699T2129@vip.cybercity.dk>, ccc6004@vip.cybercity.dk (Hans Henrik Happe) writes:
- |> Organization: CyberCity of Denmark
- |> Lines: 23
- |> Message-ID: <729.6615T699T2129@vip.cybercity.dk>
- |> References: <4f4ibc$gl9@news.cs.tu-berlin.de> <591.6610T1165T2102@login.eunet.no>
- |> <1045.6611T753T2256@vip.cybercity.dk> <695.6611T1193T2676@login.eunet.no>
- |> NNTP-Posting-Host: 194.16.56.124
- |> X-Newsreader: THOR 2.22 (Amiga;TCP/IP) *UNREGISTERED*
- |>
- |> Patrick Hanevold ( patrick.hanevold@login.eunet.no ) wrote:
- |>
- |> >>You can also render only every 2nd pixels, mask out those you don't want
- |> >>with sprites, and then:
- |>
- |> >>loop
- |> >> 1st frame: show pixel 02468... mask out 13579...
- |> >> 2nd frame: show pixel 13579... mask out 02468...
- |> >> jump loop
- |>
- |> >>In the 2nd frame you shift (scroll) the bitplanes 1 to the right.
- |> >>This looks allmost as the real double pixels (Gives very little flicker) and
- |> >>you only have to write half as much to the chip mem.
- |>
- |> >>This effect can be done using only the copper.
- |>
- |> > Yups, but what would you render to that screen?
- |>
- |> Everything that you would render to a "normal" 2x1/2x2 screen (rot&zoom, 3D effects...).
-
- well, you forgot to tell him that some conversion passes are
- needed, you won't render directly into that screen.
-
- The thing about this screen is that 2bits, containing the information
- for 2 planes, are next to each other like in a chunky pixel. i.e. they
- don't have to be separated to the 2 planes like usual. voila 1 conversion
- pass less.
-
- |>
- |> Hans Henrik Happe
- |> Alias Goat / Sumpen
- |>
- ------------------------------------------------------------------------
- fischerj@Informatik.TU-Muenchen.DE (Juergen "Rally" Fischer) =:)
-
-