Re: [hatari-devel] PhotoChrome v6.2-pre

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 18/10/2015 15:46, Troed Sångberg a écrit :
> Btw, it's not "more or less" :) Whenever the resolution register is set
> to mono the Shifter immediately stops outputting data on the RGB lines
> and instead outputs on the MONO line. The RGB-pin's output level drops
> to the same level as for BLANK (which on an ST is lower than black, on
> an STE it's the same value as for black).
>
> In theory this means that proper emulation should reserve a "blacker
> black" for BLANKing and MONO use, on ST, but I think it would suffice to
> just use black ;)

"more or less" was more in the sense "simplified explanation for those 
who reads this but don't care about the deep detail" :)

I agree that the switch to hi will turn rgb off and gives this "near 
blank" effect.

Actual rendering in Hatari has only notion of 16 colors, that will be 
displayed using current values. The idea would be to have an extra 
"blank" color (could be set to black, or very dark grey as I see on my 
STF) to show where mono or blank are used.

This would need an extra pass after converting from planar to SDL bytes 
format to alter the pixels and add blank pixels. I guess this will be 
the icing on the cake when I reach this point :)


Nicolas