Re: [patch] SVGAlib fixes

[Ethan M. <merritt@u.washington.edu>]

On Sunday, January 09, 2011 03:25:53 am David Kuehling wrote:
> Hi,
> 
> I've been working on an graphics-capable GNUplot port for OpenWrt [1],
> for use with the open-hardware NanoNote "PDA" [2].
> 
> The NanoNote only has 32MB RAM so the OpenWrt image we use does not come
> with an X-Server, insead everything is directly drawn onto the
> framebuffer
> 
> For GNUplot I had to fall back on using a port of SVGAlib that uses the
> Framebuffer for text/graphics mode switching to reliably work without
> messing up console input.

I am happy to accept the patches to term.c and linux.trm,
but ...

 >(Gtk and Qt can work this way).

Wouldn't it be more interesting to see if the Qt terminal driver
in gnuplot CVS can be used on this device?  It was my understanding that
it was developed partly to support the sort of device you describe.

I haven't seen much discussion or feedback about qt.trm, so maybe people
haven't noticed it yet.  On a normal desktop machine it doesn't seem to have
any particular advantage over the wxgtk-based wxt.trm, but on a small
device it might be an entirely different story.

	Ethan

> The first attached single-line patch makes Gnuplot's 'linux.trm' driver
> work with all SVGAlib video modes, not only 16 and 256-color modes (the
> NanoNote only supports G320x240x16M32).
> 
> The second patch fixes selection of the terminal type when svgalib
> support is compiled in.  Currently it wrongly selects 'vgagl' over
> 'linux' even when 'vgagl' driver is not compiled in due to missing
> lib3dkit.
> 
> cheers,
> 
> David
> 
> [1] http://projects.qi-hardware.com/index.php/p/openwrt-packages/source/tree/master/gnuplot-gfx
> [2] http://en.qi-hardware.com/wiki/Ben_NanoNote