Re: [MiNT] XaAES sources for FreeMiNT 1.16.3

["Helmut Karlowski" <helmut.karlowski@ish.de>]

Am 29.11.2009, 21:39 Uhr, schrieb Lonny Pursell <atari@bright.net>:

> What I do is similar to ozk, but I test red, green, and blue separately.
> Plot one red pixel, full brightness (1000) so you know it will be stored  
> as
> $ff. Examine the result and determine where exactly it placed the value  
> and
> if its intel versus motorola format.  Then plot a green pixel, note it's
> placement, plot a blue pixel and note it's placement. I also generate bit
> shift amounts for each component and shift direction flags for later  
> use, to
> speed up screen drawing.

Thanks. I thought of some obscure format thats not intel or motorola and  
the bits for the colors are more ore less randomly placed. But it turns  
out that the detection in XaAES is faulty, I dont know where the error  
comes from yet. But when I use motorola as default, it works.

> You really only want to test values that produce $ff, because if you plot
> VDI values that are under that (less than 1000) the VDI can do rounding  
> and

Yes, I was assuming that.

-Helmut