nanogui: MODE_XOR?


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Subject: Re: MODE_XOR?
From: "Aaron J. Grier" ####@####.####
Date: 23 Oct 2002 20:37:49 -0000
Message-Id: <20021023203317.GU3786@aaron.unix.fryenet>

On Wed, Oct 23, 2002 at 03:36:29PM -0400, David Muse wrote:
> While hacking together a 4bpp pxa210/hantronix lcd framebuffer
> subdriver, I noticed a MODE_XOR flag.  What does it do?  It it
> something that can be set at runtime?  My driver doesn't appear to be
> configured in that mode at any time, is it safe to remove the check
> for it?

instead of writing pixels to the screen the MODE_XOR flag will draw
using an XOR instruction instead of writes.  it's very useful for mouse
pointers.

-- 
  Aaron J. Grier  |   Frye Electronics, Tigard, OR   |  ####@####.####

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