Thanks David!
David Olofson wrote:
> On Tuesday 21 August 2001 17:57, Dan Peters wrote:
> > David Olofson wrote:
> > > On Saturday 18 August 2001 09:36, Herman Bruyninckx wrote:
> > > > On Fri, 17 Aug 2001, Dan Peters wrote:
> > > >
> > > > [...]
> > > >
> > > > > I believe it all has to do somehow with interrupting X calls. Do
> > > > > you have any experience with running X under rtlinux? I have
> > > > > work with X many times in a non RT environment and have not had
> > > > > these problems. Is there a better alternative to running X for
> > > > > doing graphical stuff under RT linux.
> > > >
> > > > Don't use X!
> > >
> > > Or make sure you've got a properly configured X server and a video
> > > card with a decent driver... Some work, but shouldn't by a major
> > > issue if you need RTLinux on the machine in the first place. (You
> > > don't run RTLinux on the average workstation anyway.)
> >
> > The video chip is a C&T 65550, and as far as I know, the server has
> > been configured properly.
>
> I don't know anything specific about this chip.
>
> > This is part of a control system, which I feel needs RTlinux. The only
> > reason to use X is to display an image and
> > display some other data on a display. Are there any better
> > alternatives to X.
>
> Try SDL; http://www.libsdl.org - nice and simple API, handles graphics
> (windowed and fullscreen modes wherever possible), sound, keyboard,
> mouse, joysticks, threads etc, and there are some helper stuff like
> graphics loading and saving and image blitting with alpha blending or
> colorkeying with RLE acceleration. It runs on several different
> platforms, and most video and audio driver APIs on those platforms.
>
> More specifically; on Linux, you can transparently use X (windowed,
> fullscreen, DGA), GGI (and whatever that supports on your system), fbdev
> and svgalib without even recompiling your program. If you want to fiddle
> with raw graphics data, you don't *have* to support all sorts of pixel
> formats (like with DirectX and other direct access APIs) - SDL emulates
> your favorite pixel format on pretty much any target with acceptable
> speed.
>
> If you want a higher level rendering API, there are various add-on
> libraries for SDL; fast "game toolkits", widget toolkits and the like.
>
> //David Olofson --- Programmer, Reologica Instruments AB
>
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