Implementation of PXA270 18BPP mode

[Adam Jackson]

On Tue, 2010-04-27 at 23:43 +0400, Sergey Lapin wrote:
> On Mon, Apr 26, 2010 at 10:25 PM, Adam Jackson <ajax at nwnk.net> wrote:
> > On Thu, 2010-04-22 at 13:34 +0400, Sergey Lapin wrote:
> >
> >> Options I run X server with are /usr/X11R6/bin/X :0 -br -audit 0
> >> -fbbpp 32 -depth 18 -weight
> >> 666 -extension RENDER -extension Composite
> >
> > Depth 18 at 32 bits per pixel?  Really?
> Alas, yes. According to 7.4.13.5 of PXA 270 manual,
> the format is that each pixel occupy 32-bit word in little-endian format,
> of which bits 0-17 are used for pixel data in RGB666 format. each
> occupying 6 bits
> of data.

That's spectacular.  I hope they at least give you six bits of alpha for
your trouble.

- ajax
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