On Saturday 21 March 2020 07:31:05 theman whosoldtheworld wrote:

> Sorry, where is the advantage of use framebuffer instead use xmc
> world?

There isn't any unless your xcm is slower. framebuffers are often below 4 
frames a second in rendering speed.

> Il giorno lun 2 mar 2020 alle ore 21:22 Frank Tkalcevic <
>
> fr...@franksworkshop.com.au> ha scritto:
> > > My question:
> > >
> > > Will using the framebuffer (instead of X) make a better
> > > environment for LinuxCNC?
> >
> > For low spec. computers, not having the overhead of X, is a bonus. 
> > You'll also boot faster into linuxcnc.
> >
> > But, you won't be able to run other applications or utilities.  And
> > you'll need to write everything from scratch - X's OpenGL is used
> > for the 3d.
> >
> > > ( I am ankle deep in FB programming now and wondering if I should
> > > get in
> >
> > deeper or head for higher ground )

I only use it if there no other choice.

> > I played around with Qt and its option to use the framebuffer as the
> > output device (with the command line option '-platform
> > linuxfb:fb=/dev/fb0'). Theoretically, you can write 1 Qt program
> > that would work with X or FB. That
> > proof of concept worked, but I didn't have time to take it further.
> >
> > Recently I tried to apply the same option with one of the Qt
> > linuxcnc UIs (pyqt?), but they used other parts of X so it would not
> > run (from memory it was IPC libraries; D-bus?)
> >
> >
> >
> >
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Cheers, Gene Heskett
-- 
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 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
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 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>


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