Messages in this thread | | | Date | Mon, 23 Dec 2002 22:17:43 +0100 (MET) | From | Geert Uytterhoeven <> | Subject | Re: [Linux-fbdev-devel] Type confusion in fbcon |
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On 23 Dec 2002, David S. Miller wrote: > On Mon, 2002-12-23 at 01:18, Geert Uytterhoeven wrote: > > That's because originally there was no fix.line_length field, and the line > > length was derived from var.xres_virtual and var.bits_per_pixel. > > > > With some hardware, the line length must be a multiple of 32 or 64 bits, and we > > needed a way to specify that, so fix.line_length was introduced. If it was > > zero, user code should fallback to the old behavior. > > And with some cards, the line length is constant. Ie. to get to > "X, Y + 1" for a given "X, Y" you add a constant to your current > frame buffer pointer. > > That is what fix.line_length is for right?
Yep.
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
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