unload which might cause seg fault in some cases

plugin)

the "multiple cubes" misbehave with the 3d windows plugin

invert it

skydome is enabled

the 3d clipping enabled by glEnableOutputClipping.

(without this fix the parent glDisableOutputClipping is called, which
 disables the scissors test causing 2d clipping visual artifacts in some
 cube plugins)

cylinder in cubeaddon

PrivateCubeScreen (CompScreen *) constructor
(mTc, mNOutput, mOutput, mOutputMask, mCleared, mCapsPainted)
(LP: #1101575)

if sides should ever be 0, which should never happen, but makes Coverity
happy
(LP: #1101541)

Minor indentation fix

following loops instead of calling mSkySize.width () and mSkySize.height ()
multiple times

instead of recalculating this value multiple times

instead of recalculating this value multiple times

Do not calculate M_PI / sides and 2 * M_PI / sides multiple times in loops,
instead save those values in the GLfloats mps and tmps and use those values
inside the loops

Improved TODO

Reduced the .diff size
Added missing argument to public CompPlugin::VTableForScreenAndWindow

cube.cpp, regression r3720 - Inner sides of cube invisible
Wrong variable type was accidentially used, cullInv is of type int, not bool

Replaced 0xffff with GLfloat MaxUShortFloat = static_cast <GLfloat>
(std::numeric_limits <unsigned short>::max ());
Declaration and assignment of float chunk in one line

Improved tooltips

PluginClassHandler::get () was designed to simply instantiate an instance of that
class for the core structure, but it did this without checking if the plugin was
loaded.

Added some new methods to PluginClassHandler exposed by LoadedPluginClassBridge
and only accessible by those who implement PluginKey to specify globally
whether or not a plugin is actually loaded, so that PluginClassHandler can
return accordingly.

Integration and unit tests added as appropriate

(LP: #1169620)
(LP: #1101026)