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List:       kde-devel
Subject:    Re: OpenGL screensaver problem
From:       ian reinhart geiser <geiseri () yahoo ! com>
Date:       2002-06-28 23:55:17
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On Friday 28 June 2002 07:08 pm, Karl Robillard wrote:
> I've just built Ian's kgravity screen saver and it has the same problem as
> mine - it only works as a preview (in a window), not as a full-screen
> blanker.  Apparently there are some deeper problems with
> KScreenSaver/QGLWidget.
>

Hrm there is something more sinister going on here.  I just noticed that the 
GL screensavers are NOT built at all by default.  It seems that they are 
ignored because of a broken OpenGL test.  Even with OpenGL support the 
screensavers never build or install.  This could be why I never got any bug 
reports on certain braindamages in KGravity ;)


Other than that they work perfectly.  Fullscreen or in windows. 

> I notice that the savers in the xsavers directory don't use the
> libkscreensaver interface (kss_create/kss_setup) but rather
> startScreenSaver/stopScreenSaver/setupScreenSaver functions.  What's up
> with that?
>

They are thin wrappers arround the XScreensaver afaik.  From what I have seen 
they are just quick and dirty ports to make access to more screensavers.  
Ideally we should get more native ones ;)


My advice is to check out if you have proper openGL support in your Qt.  
Granted even if you did it seems our test is broken enough that it should not 
matter either way.  

Ill look into the GL problem with the screensavers not loading but in the mean 
time my advice is to look at kfountain's source, that is the most mature of 
hte OpenGL screensavers.

It was also made by takeing existing C code and wrapping it in the 
KScreensaver framework.  Granted it was then tweaked ;)

Cheers
- -ian reinhart geiser
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