Re: fbdv/fbcon pending problems
From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: 2004-02-25 11:41:44
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On Tue, 24 Feb 2004, Otto Solares wrote:
On Wed, Feb 25, 2004 at 01:21:39AM +0000, James Simmons wrote:quoted
quoted
On the other side i see a lot of effort in the fbdev acceleration, it is nice but that effort should be better spent on fixing the layer, imo, the only user for acceleration is fbcon, any userland app that use fbdev disables that acceleration so it can map the vmem and ioregs, and do it's own voodoo if it wants acceleration. That acceleration is not "exported" to user space. I am working in a open source project that uses mesa-solo with fbdev and many limitations from the layer itself have been seen.That is true so far for fillrect and copyarea functions. Imageblit will be used for read and writes on /dev/fbX. Also it is used for software cursors.But if acceleration is not disabled you can't map the vmem and io regions.
I don't expect an app that mmap()s mmio to read/write from /dev/fb* at the same
time. So I see no problem disabling accelerated read/write while mmio is
mapped.
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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