Effects can specify their minimum requirements in their
desktop file:
* OpenGL
* OpenGL 2 (GLSL required)
* Shaders (either ARB or OpenGL 2)
The configuration module uses this information in combination
with which backend KWin is currently using. So if e.g. OpenGL
is used and an effect requires OpenGL 2 a detailed error
message can be showed that OpenGL 2 is required.
BUG: 209213
FIXED-IN: 4.9.0
REVIEW: 104847
Instead of getting the information from CompositingPrefs
the running KWin instance is queried through D-Bus.
In general the running KWin should have more information
about whether Compositing will work or not.
This means the kcm no longer has to link OpenGL.
REVIEW: 104753
There is no need to have it driver specific any more.
All drivers seem to support it (only Intel had been
opt-ed out without any apparent reason shown in commit log).
This was the last driver specific setting which means that
the method applyDriverSpecificSettings() got dropped from
CompositingPrefs.
Some old restructuring caused -DKWIN_HAVE_OPENGLES to no longer be
passed to the compiler, causing OpenGL-specific code to be built
while the libraries to link it were not available.
REVIEW: 104558
This should be the last of the bunch...it was split up so it could be
easily reverted/looked at.
The idea is that all of this will improve searching functionality for a
lot of people using System Settings. That's the hope anyways.
In reality it doesn't help much *yet*, because somebody needs to make
the search functionality search for more .desktop files. It currently
only does main ones afik. I don't know if this is a technical
limitation, or just a minor oversight and perhaps something easy to fix.
Hopefully what I've done is towards a good direction though, of
improving search functionality in system settings...
Reduces duplication of settings in different areas and was only
providing a small subset of the possible window switching capabilities.
With BoxSwitch being possible to be rendered as a "normal" window
switcher it does not make much sense anyway.
Due to changes in build system we have always either OpenGL or OpenGL ES.
This allows to remove the KWIN_HAVE_OPENGL_COMPOSITING define. In the
effects the define is kept as KWIN_HAVE_OPENGL which can be used in
future to build also an XRender only effect system.
