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- Newsgroups: comp.sys.amiga.programmer
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!uwm.edu!zazen!doug.cae.wisc.edu!pochanay
- From: pochanay@cae.wisc.edu (Adisak Pochanayon)
- Subject: Re: Chunky Pixels vs. Bitplanes (was: Chunky Chip Set...)
- Organization: College of Engineering, Univ. of Wisconsin--Madison
- Date: 12 Jan 93 11:24:05 CST
- Message-ID: <1993Jan12.112405.14424@doug.cae.wisc.edu>
- References: <1993Jan1.141207.20262@mpifr-bonn.mpg.de> <doiron.0kil@starpt.UUCP> <10408@cbmger.de.so.commodore.com>
- Sender: pochanay@cae.wisc.edu
- Lines: 14
-
- Chunky Pixels are much more efficient than Bitplanes. Consider setting
- a 8-bit color-depth pixel.
-
- With Chunky pixels you simply make one memory access. That is, writing the
- color to the pixel address.
-
- With Bitplanes, you must make 16 memory access. For each bitplane, you must
- read a byte, set or clear the appropriate pixel-bit, and then write back the
- byte.
-
- 1:16 memory access to slow chip mem??? I think that Chunky wins.
- Not to mention that chunky pixel calculations take less time to find the
- pixel address.
-
-