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From: Emmanuel Marty <core@suntech.fr>
To : ggi-develop@eskimo.com
Date: Sat, 08 Aug 1998 14:24:26 +0000
Re: palettes, etc
Alex Roberts wrote:
> all i want to know is: do i have to define a palette, even though i'm aiming
> for development with 16+bit graphics? and if i do that, will it be ok for
> people using KGI as well as libGGI/X11?
8-bit modes use palettes, and what you write to the framebuffer is a 8-bit
index into the palette.
15,16,24,32-bit modes, etc. use direct color - what you write to the
framebuffer is the direct color values, with varying precision depending
on the number of bits (3 x 5 bits for 15-bit, 3 x 8 bits for 24, for example) ;
therefore you needn't set any palette.
If you intend to use KGI mainly, you can use any mode you like, the display
will switch. For X, most people use 16-bit, i think, and you have the trueemu
target to do conversions.. but best is to have native support for at least
indexed and direct color..
--
Emmanuel
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