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Horizontally flipping (mirroring) KDE's desktop.

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VuurSnikkel

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  • "VuurSnikkel" started this thread

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Monday, January 12th 2004, 2:33pm

Horizontally flipping (mirroring) KDE's desktop.

Hello there...


I'm new to Linux and am abou to start programming a VR application using a stereoscopic OpenGL system and proprietary input. Because of the way the prototype functions, the data is visualized by projecting it on a mirror (OpenGL compensates for this by internally flipping the scene horizontally). The problem, however, is the fact that the KDE desktop itself remains flipped when viewing it through the prototype device. Although I can use another machine to login to the prototype, I would also like to be able to directly use KDE on the prototype, so I was wondering if there is some memory resident driver / system utility than can toggle screen flipping when some key combination is pressed. The system uses KDE 3 in combination with two nVidia Quadro 4 900XGL graphics cards for its display. Some help would be greatly appreciated. Thanks in advance.


GRTZ,

(Sn)Ik.

anda_skoa

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Location: Graz, Austria

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Tuesday, January 13th 2004, 4:50pm

The RANDR extension of X11, available since XFree4.3 can rotate the screen, maybe it can rotate it 180°

Cheers,
_
Qt/KDE Developer
Debian User

VuurSnikkel

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Tuesday, January 13th 2004, 8:32pm

Well, thanks for the reply, but rotating 180 degrees is of course not the same as flipping horizontally and / or vertically. I will nevertheless take a look at RANDR, it might come in handy. Thanks for the reply.

cmbofh

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Tuesday, January 13th 2004, 9:08pm

Quoted

Original von VuurSnikkel

Well, thanks for the reply, but rotating 180 degrees is of course not the same as flipping horizontally and / or vertically. I will nevertheless take a look at RANDR, it might come in handy. Thanks for the reply.

There is a tray applet that makes use of the RANDR extension.
It's called krandrtray and AFAIK it will make its debut in KDE 3.2.
You can start it on the command line and it'll dock into
your system tray.

In its config there are several options
including horizontal and vertical flipping.
But for me those options are greyed out.
Not sure if I'm just missing some X server capability...
maybe you give it a try. If you're running a recent version of KDE,
that is. But anyway, KDE 3.2 is close to release.

Cheers,
cm.