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* Removed obsolete XInitThreads() from main function, since this is handled by Qt when constructing CampvisApplication.

* Implemented the actual logic behind the automation mode property in TrackballCameraProvider
* Added mouse wheel zoom support to cgt::Trackball
* Renamed cgt::IHasCamera to cgt::AbstractCameraProxy

closes #642

Fixed module CMake files not setting ThisModShaderDirectories correctly in case of multiple directories.

See merge request !116

closes #640
refs #641

refs #641

Removed OpenGLGarbageCollector interface. All textures, buffers and FBOs are now deleted right away. This seems to improve the flickering issues, however they are still present.

refs #640
refs #641

See merge request !115

closes #382

refs #382

Fixed IndexedMeshGeometry::hasPickingInformation() returning wrong value and thus GeometryRenderer failing to render correctly on AMD GPUs.

refs #382

Apparently, glBindAttribLocation() does not work as planned with AMD GPUs. Therefore, all Shaders yielded black images. Replaced all attribute locations with hard-coded ones in the vertex shader and removed corresponding convenience function from cgt::Shader.

refs #382

Added onDataContainerDataAdded overload to AbstractPipeline to set pipeline dirty when the render target image has changed. Rendering of multiple canvases at the same time still broken though.

refs #641

Cuda cm rebased

See merge request !114

ConfidenceMapGenerator now supports alpha-beta filtering.

Raycasterupdate

please do check DRRRaycaster, after rabasing, it yields a white screen !!

See merge request !113

* Cleaned up unsused code
* Fixed cppcheck issues
* Fixed depth test issues during OrientationOverlay rendering (had glitches in combination with DRRRaycaster)

Fixed duplicate member in OptimizedRaycaster.

Conflicts:
	modules/vis/processors/volumerenderer.cpp

* Fixed signal issues in VolumeRenderer when updating the raycasting processor.
* Fixed assertions in AutoEvaluationPipeline::onPropertyCollectionPropertyAdded() and AutoEvaluationPipeline::onPropertyCollectionPropertyRemoved().

Conflicts:
	modules/vis/processors/volumerenderer.cpp
	modules/vis/processors/volumerenderer.h

Added AutoEvaluationPipeline also monitoring PropertyCollection's s_propertyAdded and s_propertyRemoved signals.

Conflicts:
	modules/vis/processors/volumerenderer.cpp
	modules/vis/processors/volumerenderer.h

Issue543: changing raycaster in volumeexplorer: added raycasterfactory, something is going wrong while replacing

Conflicts:
	modules/vis/processors/drrraycaster.h
	modules/vis/processors/simpleraycaster.h

Conflicts:
	modules/vis/processors/volumerenderer.cpp
	modules/vis/processors/volumerenderer.h

* Added TextureReaderTga::loadTextureArray().
* Added OrientationOverlay to VolumeRenderer.

* Added stretch widget to PropertyCollectionWidget

CudaConfidenceMapsDemo pipeline now has the feature to collect
statistics about the computed frames. The statistics can be exported in
CSV format to the clipboard.

Label is now hidden by default for Button Properties which saves space
for long button descriptions

added support for fixed iteration count to ConfidenceMapsSolver again.
It is now possible to chose wether to use a time budget or a fixed
iteration count.