Messages in this thread | | | Subject | Re: [Linux-fbdev-devel] Type confusion in fbcon | From | "David S. Miller" <> | Date | 23 Dec 2002 13:11:43 -0800 |
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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?
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