Rockbox mail archiveSubject: Re: Another list optimization
Re: Another list optimization
From: Paul Louden <paulthenerd_at_gmail.com>
Date: Sun, 25 Jun 2006 06:45:30 -0500
Isn't the text and the mask the same thing? You just have two framebuffers.
The "foreground" which is only drawn in the foreground color and is
primarily text. And the actual framebuffer. The backdrop is stored wherever
it is currently (which I suppose you could call a framebuffer but it never
changes really.) Since the foreground image is always 1-bit, 1 is drawn in
the foreground color, 0 uses the pixel at that location from the backdrop
buffer instead, right?
I'll admit that I don't know the code at all, but it seems kinda simple
since text is always drawn 1-bit. I'm probably missing something.
On 6/25/06, postmaster_at_diffenbach.org <postmaster_at_diffenbach.org> wrote:
> postmaster_at_diffenbach.org wrote:
> > I've now implemented another optimization, used when items "move off"
> > the top or bottom of the list. The implementation just copies the
> > framebuffer over itself, to move the unchanged items up or down in the
> > viewport.
> If you have a 60 GB ipod only, you can try it here:
Received on 2006-06-25