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- Path: toad.stack.urc.tue.nl!not-for-mail
- From: jaco@stack.urc.tue.nl (Jaco Schoonen)
- Newsgroups: comp.sys.amiga.graphics
- Subject: Re: 256 color WB
- Date: 21 Feb 1996 21:01:17 +0200
- Organization: MCGV Stack, Eindhoven University of Technology, the Netherlands.
- Message-ID: <4gfq5t$o05@toad.stack.urc.tue.nl>
- References: <19960220.75967C8.12A09@shadow.res.cmu.edu> <4gf57q$62h@news.kth.se>
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-
- Johan Forsberg (d92-jfo@nada.kth.se) wrote:
- : Matthew Hunter writes
- : >On 20 Feb 1996 18:40:56 GMT, Georges Heinesch (geohei@ibm.net) wrote:
- : >> Is it correct, that the maximum number of colors for the WB is 256,
- : even
- : >> with a graphic board like a CV64?
- : >
- : > Yes and no. You can open a 15, 16, or 24-bit workbench with
- : >CyberGraphX, but most problems (including many of the Workbench
- : >routines) do not recognize the extra colors. Lacking that
- : >recognition, the extra colors become rather useless.
-
- Not completely true either. If you install the new picture-datatype any
- program that uses the datatypes will use the full 16/24 bit. (For example,
- MultiView, WBPattern etc.)
-
-
- : That's not quite true... On 15+ bit screens, CyberGFX emulates a normal,
- : palette based screen for programs that don't support direct colour.
- : The number of palette entries is selectable (must be power of 2)
- : So you can specify 512, 1024,..... 65536,.... palette entries.
- : Programs (including WB) will think that there really are that many
- : colours.
-
- I'm not sure wether these settings are actually used. I thought that
- CyberGraphX emulated a 256 color pallette for each program. If a program
- uses ObtainPen() to get a pen, CyberGraphx will keep giving the program pens
- until it reaches 256 pens. So each program thinks itr has all the pens.
- I can't confirm this, but I thought it's way it is.
-
- --
- Jaco Schoonen
- (jaco@stack.urc.tue.nl)
-