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- Newsgroups: comp.sys.amiga.programmer
- Path: sparky!uunet!spool.mu.edu!think.com!enterpoop.mit.edu!bloom-picayune.mit.edu!athena.mit.edu!bwill
- From: bwill@athena.mit.edu (Brian F Williams)
- Subject: Re: Chunky Pixels vs. Bitplanes (was: Chunky Chip Set...)
- Message-ID: <1993Jan3.154450.23710@athena.mit.edu>
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- Organization: Massachusetts Institute of Technology
- References: <1993Jan1.141207.20262@mpifr-bonn.mpg.de> <doiron.0kil@starpt.UUCP> <1993Jan3.035112.5898@mpifr-bonn.mpg.de>
- Date: Sun, 3 Jan 1993 15:44:50 GMT
- Lines: 21
-
-
- Just curious, but if you were to do a bitmap scaling, wouldn't
- the planar and chunky implementations run at the same speed? Couldn't
- you do a 'chunky' scale on each bitplane, which in an 8-bit display
- would be 1/8 the size of the full display buffer for a real chunky
- display. Yes, you'd do this 8 times, but each time with 1/8th the
- data. Or is it impossible to manipulate a planar display like this?
- You'd probably have to take special care so that pixels
- in each plane stay aligned (if the scaling isn't by an integer), but I
- don't think it would be that difficult.
-
- --Brian
-
- p.s. I prefer chunky implementations myself, but after using a Mac, which
- can have anywhere from 1 to 24 bit color, I've realized that no routine
- can be really fast on the average, you have to optimize your code for your
- specific needs.
- --
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