From: pv AT cs DOT montana DOT edu (Paul Peavyhouse)
Newsgroups: comp.os.msdos.djgpp
Subject: Palettes (or is it palletes?)
Date: Wed, 12 Mar 97 21:31:12 GMT
Organization: Montana State University
Lines: 27
Message-ID: <5g8004$dtu@netra.montana.edu>
NNTP-Posting-Host: esus.cs.montana.edu
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

        I am really confused by Allegros use of palettes.  I am new to playing 
with palettes, and I don't know if the implementation is standard practice 
or not.
        Where I am confused is with all of this "0-63", "0-255", and other 
talk about how to use the color_map palette and such to introduce lighting 
effects.
        I don't really know where to begin to ask for help, because I really 
don't understand what I don't understand! :)  It just seems to me like if I 
use PaintShop to create an image with a palette that fades from black (0,0,0) 
to bright green (0,255,0), if I load that image in the program I am writing 
and "set_palette(grass_palette);", the results should NOT be cyan?!?!?!?!
        I hope that my understanding of palettes in general will help me to 
understand fade palettes too, but if anyone can explain how to make Allegro 
take a 256 color "black-to-green" palette and perspective fade it from 
"normal-to-white" acording to it's z-axis location, I would appreciate it!  
(what I am aiming for right now is to simply 3D mimick walking on a 
lawn).  Thanks in advance!

                                                        PV


______________________________________________________________________________

 Paul Peavyhouse                          
 http://www.cs.montana.edu/~pv           
 email: pv AT cs DOT montana DOT edu                
______________________________________________________________________________