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- Path: sparky!uunet!mcsun!sunic!dkuug!diku!gogol
- From: gogol@diku.dk (Peter Skov Knudsen)
- Newsgroups: comp.os.os2.apps
- Subject: Re: Can you have 256 color bitmaps for a background?
- Message-ID: <1992Sep3.152149.5438@odin.diku.dk>
- Date: 3 Sep 92 15:21:49 GMT
- References: <1992Aug22.172758.21717@donau.et.tudelft.nl> <DENS.92Aug23020546@flammulated.owlnet.rice.edu>
- Sender: gogol@rimfaxe.diku.dk
- Organization: Department of Computer Science, U of Copenhagen
- Lines: 32
-
- dens@flammulated.owlnet.rice.edu (Dennis Allen Schmitz) writes:
-
- >As near as I can tell, folders don't try to change any of the pallet
- >colors as they load pictures (this includes the desktop folder). The
- >best way, I guess, to make this work would be to dither the original
- >24 bit images using the default 256 palette colors.
-
- >Later,
- >den
-
- It is __rumored__ that the svga drivers in the fall csd will include
- pallete management, which should do the trick. BTW it is not the
- responsibility of the folder displaying a picture to mangle with
- the pallette - it should be done by the driver. If you at a given time
- have several open folders with different background pictures using
- a total of say 703 different colors which you want to display on
- a 256-color display, the best result will be achieved letting the driver
- manipulate the pallette and assign colors to give the closest
- possible match for all windows. This is opposed to the strategy in
- Windows, where its the applications responsibility to manipulate
- the pallette. This implies that if you under Windows have a 256-color
- bitmap as your background, open wingif and display another 256 color-
- bitmap, the background will in most cases look terrible. Given the
- proper drivers with pallette management, both pictures will look
- acceptable.
- This latter approach naturally relies totally on the availability
- of drivers with pallette management. As it is now, you can display as
- many 256-color bitmaps under OS/2 as you like - and they"ll all look
- absolutely terrible :-)
-
- Peter S. Knudsen, email gogol@diku.dk
- Computer science student, University of Copenhagen
-