🚀 go-pugleaf

In article <1990Mar2.043848.501@uncecs.edu> cjl@uncecs.edu (Charles J. Lord) writes:
>It sounds possible, but the problem is that the color pallette
>on the VGA is 18 bits: 6 each R,G,&B.  To do a true gray scale
>with a color monitor, you can only define a 64-shade scale.

It seems to me that a similar thing could be done for a color VGA system. 
start with all three colors 0.  To fill suceeding registers, use the following
algorithm, cycling until all registers are complete:
	- increment R by 1
	- increment G by 1
	- increment B by 1, decrement G by 1
	- increment G by 1
Thus, you get colors like:
	- 00,00,00  01,00,00  01,01,00  01,00,01  01,01,01  02,01,01

The nice thing about using this is that the colors rendered would look like
a gray scale (they all approximate the vector running through the center of
color space).  The total number of colors is 4 * 2**6 = 2**8 = 256, thus all
registers are used.  The only 'bug' is in the one discontinuity where G is
being decremented, but 01,01,00 will at least be different than 01,00,01, 
and my suspicion is that the progression would look natural.

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