[Coco] Artifacting (again)

[Mark McDougall]

On 3/09/2010 5:11 PM, Ciaran Anscomb wrote:

> The way I do it is with a 5-bit lookup table, indexed by the value formed
> by the bits two pixels before to two bits after the pixel being considered.
>
> So for say, the 8th pixel across, the number formed by the 6th to 10th
> bits of the scanline indexes into the colour table.

Interesting. Looking at your source, it's a straight look-up and therefore 
not surprisingly I am unable to deduce any of your logic for it.

Would you care to enlighten me (us) on your algorithm? Does it have any 
theoretical basis, or is it based purely on observation?

TIA
Regards,

-- 
|              Mark McDougall                | "Electrical Engineers do it
|  <http://members.iinet.net.au/~msmcdoug>   |   with less resistance!"