Re: [PATCH/RFC] atafb and panning

[Geert Uytterhoeven <geert@linux-m68k.org>]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: TEXT/PLAIN; charset=UTF-8, Size: 1488 bytes --]

On Sat, 22 Nov 2008, Petr Stehlík wrote:
> Michael Schmitz pí¹e v So 22. 11. 2008 v 08:16 +0100:
> > > > If var->xoffset has the low order bits set (sub-word pixel offset) 
> > > > par->hw.falcon.xoffset takes care of that, and xoffset takes care of the rest. 
> > > > Since the partial word offset shifts the beginnig of the scan line into the 
> > > > first word, the offset to the next scan line (par->hw.falcon.line_offset) has to 
> > > > be shortened. 
> > > 
> > > Sounds reasonable. But the shortening part doesn't work on ARAnyM, nor do
> > > small panning increments. So it really smells like an ARAnyM bug.
> > 
> > Petr said as much if I understand him right. No need to fix ARAnyM though, we 
> > just need to keep that in mind. 
> 
> ARAnyM's VIDEL emulation has already been fixed by Patrice (yesterday
> night, in CVS).

I can confirm that (for depths 2, 4, and 8). However, it's not flicker-free.
Dunno if that's an atafb or ARAnyM issue.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
--
To unsubscribe from this list: send the line "unsubscribe linux-m68k" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html