Re: Re: [Question] Colour management

[Alexander Kern <alex.kern@gmx.de>]

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Am Samstag, 31. Juli 2004 23:19 schrieb Antonino A. Daplas:
> On Saturday 31 July 2004 21:31, Ville Syrjälä wrote:
> > > red_reg[index * 8] = red
> > > green_reg[index * 8] = green
> > > blue_reg[index * 8] = blue
> > >
> > > Some hardware require that all 8 entries needs to be filled up.
> >
> > I noticed you do this in i810fb. What happens if you don't do this?
>
>  
> Wrong colors.
>
> > AFAIK mach64 doesn't need this.
>
> Yes, it's hardware dependent. When I decided to add directcolor support,
> I initially copied the mach64's setcolreg function but I got wrong
> colors at bpp16.  Found out by experimentation that I need to set all
> 256 entries of the CLUT.
>
> Tony
Very scurry, even mach64 give wrong colors for me ;-))

Here are the pics, that demonstrate my errors.

empty-penguin.jpg shows how looks my boot logo at 15 and 16bpp
Sorry for wrong description in previous mail. Text string is not JSimmons but 
simple Simmons.

fbi-shows-wrongcolors.jpg shows fbi gives wrong colors at 16bpp, must be 
yellow, got red.

Regards Alex

P.S. maybe boot logo function is not too good client?

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