* introduced abstract tgt::GLContext for thread-safe management of an OpenGL context
 * introduced Qt-threading based tgt::QtGLContext, tgt::QtThreadedCanvas and tgt::QtThreadedPainter
 * adapted tumvis-core and tumvis-application to new OpenGL context handling

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@194 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

 * Moved paint() method out of VisualizationPipeline back to TumVisPainter
 * started using signals/slots instead of simple observer implementation

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@193 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

 * fixed memory leak in ImageDataConverter
 * added usage of Shader::IgnoreUniformLocationError where reasonable
 * fixed shaders

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@189 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@187 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

 * added some initial GLSL shaders
 * work on VisualizationPipeline
 * added SliceVis pipeline stub and SliceExtractor processor stub

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@185 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

 * Processors no longer have their own DataContainer, instead the DataContainer to work on is passed during process()
 * introduced VisualizationPipeline

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@180 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

 * added AbstractEventHandler

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@171 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

 * un-templated ImageDataDisk

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@165 bb408c1c-ae56-11e1-83d9-df6b3e0c105e

git-svn-id: https://camplinux.in.tum.de/svn/campvis/trunk@164 bb408c1c-ae56-11e1-83d9-df6b3e0c105e