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From: David Gibson <david@gibson.dropbear.id.au>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: David Gibson <dgibson@redhat.com>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH v2 03/11] vga: Separate LE and BE conversion functions
Date: Tue, 30 Sep 2014 18:07:29 +1000	[thread overview]
Message-ID: <20140930080729.GA13852@voom.redhat.com> (raw)
In-Reply-To: <1412063970.23471.9.camel@nilsson.home.kraxel.org>

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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 <david@gibson.dropbear.id.au>

-- 
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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  reply	other threads:[~2014-09-30  9:02 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-29  9:31 [Qemu-devel] [PATCH v2 00/11] vga: cleanup and endianness patch series Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 01/11] vga: Start cutting out non-32bpp conversion support Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 02/11] vga: Remove remainder of old conversion cruft Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 03/11] vga: Separate LE and BE conversion functions Gerd Hoffmann
2014-09-30  0:43   ` David Gibson
2014-09-30  7:59     ` Gerd Hoffmann
2014-09-30  8:07       ` David Gibson [this message]
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 04/11] vga: Remove rgb_to_pixel indirection Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 05/11] vga: Simplify vga_draw_blank() a bit Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 06/11] cirrus: Remove non-32bpp cursor drawing Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 07/11] vga: Remove some "should be done in BIOS" comments Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 08/11] vga: Rename vga_template.h to vga-helpers.h Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 09/11] vga: Make fb endian a common state variable Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 10/11] vga: Add endian control register Gerd Hoffmann
2014-09-30  0:45   ` David Gibson
2014-09-30 10:56     ` Gerd Hoffmann
2014-09-29  9:31 ` [Qemu-devel] [PATCH v2 11/11] vga-pci: add qext region to mmio Gerd Hoffmann

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