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Re: [Qemu-devel] [PATCH v2 03/11] vga: Separate LE and BE conversion fun


From: David Gibson
Subject: Re: [Qemu-devel] [PATCH v2 03/11] vga: Separate LE and BE conversion functions
Date: Tue, 30 Sep 2014 18:07:29 +1000
User-agent: Mutt/1.5.23 (2014-03-12)

On Tue, Sep 30, 2014 at 09:59:30AM +0200, Gerd Hoffmann wrote:
>   Hi,
> 
> > >          case 15:
> > > -            v = VGA_DRAW_LINE15;
> > > +            v = big_endian_fb ? VGA_DRAW_LINE15_BE : VGA_DRAW_LINE15_LE;
> > >              bits = 16;
> > >              break;
> > >          case 16:
> > > -            v = VGA_DRAW_LINE16;
> > > +            v = big_endian_fb ? VGA_DRAW_LINE16_BE : VGA_DRAW_LINE16_LE;
> > >              bits = 16;
> > >              break;
> > 
> > So, v1 changed both of these cases to bits = 15, which looked wrong
> > for case 16.  v2 changes neither, which looks wrong for case 15.  Or
> > is there a reason it should be 16 for case 15?
> 
> It is correct.  The '15' is the color depth, and 'bits' is the number of
> bits per pixel, which is 16 because the color format uses two bytes per
> pixel and one of the bits is unused.

Ok, then:

Reviewed-by: David Gibson <address@hidden>

-- 
David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!
http://www.ozlabs.org/~dgibson

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