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List:       freedesktop-xorg
Subject:    Re: Exclusive Fullscreen Mode
From:       Roland_Plüss <roland () rptd ! ch>
Date:       2010-09-07 14:49:06
Message-ID: 4C8650E2.3060406 () rptd ! ch
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On 09/06/2010 09:11 PM, Thomas Lübking wrote:
>> 2) What about performance while fullscreen?
>> performance? Do WMs like KDE switch compositing while something is
>> fullscreen or stays it the same?
> As for KWin: "by default yes" (and there's no GUI to change that setting, and 
> oc. not if you made your window translucent...)
What exactly you mean with this? What I'm looking for is if the
compositing is disabled if a window goes fullscreen. I can witness heavy
framerate drops (random) with compositing enabled. Speed can go down to
50%, sometimes 25% of full speed without compositing enabled. So I hoped
while fullscreen this beast is disabled so you get full performance. The
problem is that games in general (high-end ones especially) use a lot of
GPU RAM. With compositing taking away a random amount of GPU RAM. With
exclusive fullscreen one can fully grab all GPU RAM and work with it.
> I don't know what you're after, but using some toolkit usually makes life 
> easier and more portable... (even opengl/glx has a function to change the 
> resolution)
Xlib is a requirement. Toolkits are therefore a no-go. Concerning OpenGL
I never heard of the ability to change screen resolution. Is this some
extension or GLX only code?

-- 
Mit freundlichen Grüssen
Plüss Roland

Leader und Head Programmer
- Game: Epsylon ( http://www.indiedb.com/games/epsylon ,
http://epsylon.rptd.ch )
- Game Engine: Drag[en]gine ( http://www.indiedb.com/engines/dragengine
, http://dragengine.rptd.ch )
- Normal Map Generator: DENormGen ( http://epsylon.rptd.ch/denormgen.php
) and others


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