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    SubjectRe: GGI Project Unhappy On Linux
    On Fri, 27 Mar 1998, Erik Andersen wrote:
    > On Fri, Mar 27, 1998 at 05:50:42PM +0100, Geert Uytterhoeven wrote:
    > > On Thu, 26 Mar 1998, Pavel Machek wrote:
    > > > How does fbcon work with hardware acceleration? [Once we solve
    > > > acceleration issue somehow, we can get rid of GGI and use fbcon
    > > > instead. But - I'm not sure if such thing even can be done. With
    > > > cards having critical registers neer non-critical ones :-( ]
    > >
    > > >From user space, the X server mmaps the MMIO registers.
    > >
    > > For text console acceleration (mainly scrolling), the kernel knows how to do
    > > simple blits for some chipsets. If no blit routines are available, it will use
    > > the CPU.
    > Hmm. Could fbcon be made to work _with_ libggi? That way the

    That's perfectly possible.

    > framebuffer's drawing and acceleration code could stay in the userspace
    > libggi library -- not in the kernel. This move to a userspace libggi
    > could also move the "blits for some chipsets" code already in the kernel
    > out to userspace as well, so the kernel gets to use the nice, safe, sane
    > svga card support from the ggi folks, the ggi folks stay happy because
    > the Linux world finally apprecieates them, the X server folks get to
    > focus on X windowing things (instead of graphics card support) because
    > ALL Linux targets are just framebuffers, and Linus stays happy because
    > the device abstraction stays the same as it is now.

    People actually started working on a frame buffer device library, but it seems
    the project died.



    Geert Uytterhoeven
    Wavelets, Linux/{m68k~Amiga,PPC~CHRP}
    Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium

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