Question: VM and DirectFB (Direct Framebuffer)
skyrat at centrum.cz
Tue Apr 19 19:10:38 UTC 2005
thanks for your reply. I'm working on some embedded system called SqueakOS (minimal Linux + Squeak)
so I decided NOT to use X11 (to save some space). I have run-able system via VESA FB but it's not
accelerated. I have found link to DirectFB (http://www.directfb.org) that accelerates graphics. This
library provides an interface for FB and implements same hardware based functions to enable
advantages of graphics accelerators like Matrox, Geforce, Radeon, etc.
My task is to get DirectFB running and try Squeak on it. Thats why i need to know if any VM with
DirectFB plugin exists or not. Or if there is any other possibility to run Squeak via DirectFB.
Thanks lot again,
> Hi Rene,
> I tried running Squeak via FB on a Linux system (a 3.6 Image, kernel 2.4
> I believe) a while back; speed comparisons indicated that the interface
> was a little too languid to be usable.
> For fluid operation in Morphic, X11's acceleration was too useful to
> abandon. Additionally, there was the mouse issue: sluggish and
> interrupted when running via FB (using the gpm driver?), real-time and
> responsive in X. Not hard to see why I made the choice to retire from
> the FB world. I'll add as a sidenote, however, that the hardware in
> question was pretty old.
> So to answer your question - yes, Squeak can use FB. 'Acceleration', I'm
> not so sure about....
> Hope that helps, and isn't too anecdotal.
> Warm regards,
> On 18 Apr 2005, at 23:35, Rene Pavlik wrote:
>> anyone heard about Squeak running on DirectFB (Direct Framebuffer)?
>> I'm looking for such VM that can use DirectFB for acceleration of
>> Squeak graphics.
>> Does it exist?
>> Thanks lot.
>> -- Rene
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