97 lines
3 KiB
Text
97 lines
3 KiB
Text
This file describes how to set up kwin_composite. Note that since it is still
|
|
a work in progress, this file may possibly get out of date at times.
|
|
|
|
|
|
See file HACKING for details on developing KWin, including building
|
|
the kwin_composite branch.
|
|
See file COMPOSITE_TODO for a list of things that still need to be done.
|
|
See effects/howto.* for a HOWTO on writting effects.
|
|
See documentation in source (mainly in scene.cpp) for description
|
|
of the design of the compositing framework.
|
|
|
|
After starting, KWin's debug output also says which compositing backend it uses, e.g.
|
|
"OpenGL compositing". If it does not, most probably your X is not configured properly.
|
|
|
|
nVidia:
|
|
===========
|
|
|
|
8xxx drivers and newer work, only 9xxx and later drivers provide TFP (texture_from_pixmap)
|
|
functionality.
|
|
|
|
You need in xorg.conf
|
|
|
|
Option "AddARGBGLXVisuals" "True"
|
|
|
|
in 'Section "Screen"' and also the XComposite extension enabled:
|
|
|
|
Section "Extensions"
|
|
Option "Composite" "Enable"
|
|
EndSection
|
|
|
|
Issues:
|
|
-------
|
|
|
|
When switching away from the X session KWin freezes in nvidia's OpenGL library
|
|
- turn off GLVSync option (see below)
|
|
- fixed with 100.14.23 drivers
|
|
TFP mode (see GLMode below) doesn't work with windows with certain sizes (32x32)
|
|
- already fixed in latest drivers
|
|
Refresh rate is slower than it should be
|
|
- nvidia drivers use refresh rate to work around some X limitations
|
|
- disable DynamicTwinView (see nvidia README)
|
|
- should(?) be fixed with drivers updated for xrandr1.2
|
|
|
|
|
|
ATI:
|
|
========
|
|
|
|
The radeon driver should work for R200 chips, it's worse with R300 chips.
|
|
TODO - fglrx - no idea
|
|
|
|
You need in xorg.conf the XComposite extension enabled:
|
|
|
|
Section "Extensions"
|
|
Option "Composite" "Enable"
|
|
EndSection
|
|
|
|
Also using
|
|
|
|
Option "XaaNoOffscreenPixmaps" "true"
|
|
|
|
in 'Section "Screen"' may improve performance for non-TFP (texture_from_pixmap) modes.
|
|
|
|
For the TFP mode AIGLX needs to work. With AIGLX direct rendering should be disabled
|
|
(see GLDirect below, with X.org older than 7.2 "export LIBGL_ALWAYS_INDIRECT=1" before
|
|
running kwin may be necessary).
|
|
|
|
|
|
Intel:
|
|
=======
|
|
|
|
TODO - no idea. Possibly similar to ATI.
|
|
|
|
|
|
Configuration options:
|
|
======================
|
|
|
|
All general configuration option are in group [Translucency] in kwinrc config file:
|
|
|
|
UseTranslucency=<true|false> - enables/disables compositing support
|
|
GLMode=<TFP|SHM|Fallback> - selects texture creating mode
|
|
RefreshRate=<number> - manually specified refresh rate, should be usually automatically detected
|
|
GLDirect=<true|false> - enables/disables direct rendering
|
|
GLVSync=<true|false> - enables/disables synchronizing with monitor refresh
|
|
|
|
ShowFPSEffect:
|
|
Options are in group [EffectShowFps] in kwinrc config file:
|
|
Alpha=<number 0.0-1.0> - transparency
|
|
X=<number> - X position, negative is from the right edge, -10000 is exactly right edge
|
|
Y=<number> = Y position, the same like X
|
|
|
|
|
|
Effects:
|
|
========
|
|
|
|
Effects can be enabled/disabled in KConfig module accessible by right-clicking
|
|
on a window title, choosing "Configure Window Behaviour" and then
|
|
"Window Effects".
|