New in this release
DisplayCluster 0.5 provides the following improvements:
- The dcStream library has been moved to a separate project: Deflect.
- The project has been ported from Qt4 to Qt5
- Compilation of external dependencies (Deflect, TUIO) has been simplified thanks to the "git subproject" functionality. Dependencies are cloned during the CMake configure step and built alongside the project.
- Rendering of contents is done in QML for a better and simplified UI design.
- Windows have a title bar which shows the name of the file (or the stream).
- Windows have customizable action buttons which allow users to close / maximize windows and pause movies from the wall.
- Windows have dragable borders for reszing them from the wall.
- Synchronized buffer swap and vsync works for all types of window settings.
- Added pyramidmaker utility to create image pyramids from the command line.
- Image pyramids keep the format of the source image file instead of using jpg.
- Alpha blending (transparency) for SVGs and appropriate image types.
- The startdisplaycluster script has been greatly improved and handles more MPI implementations (OpenMpi, MVAPICH, MPICH2, MPICH v3).
- Window move and resize operations go through a controller to constrain them inside a valid range.
- Resizing and zooming inside windows happens around the mouse or touch gesture center.
- FPS statistics of PixelStreams are per-stream instead of per-segment.
- Debug display of PixelStream segements show the absolute size of the segments.
- A few extra unit tests (StateSerialization, ContentWindowController, DoubleTapGesture).
- Multiple refactorings and code cleanups. All global variables have been removed.
- CMake cleanups, using common_library and common_application from CMake/common.
- Improved clarity of log messages
- PDFs and SVGs have been optimized to move and resize much faster.
- PDFs and SVGs don't redraw constantly in zoomed mode or in settings with mutliple windows per node.
- Added a short user guide.
- Removed obsolete manual.pdf.
- The Webbrowser widget uses the correct webpage from the configuration.
- Improved support for decoding Movies.
- Fix session loading from legacy xml.
New in DisplayCluster 0.4
DisplayCluster 0.4 provides the following improvements:
- Movies play synchronously across all screens.
- The launch procedure relies on a single python script that works out of the box on all supported platforms and with the different MPI implementations. It is compatible with both Python 2.x and 3.x APIs.
- dc::Stream implements an asyncSend() function for PixelStreams.
- MPIBenchmark application to measure interprocess communication performance.
- DesktopStreamer properly handles AppNap on OSX 10.9.
- DesktopStreamer detects Retina displays automatically (no retina checkbox).
- ImagePyramids use a correct aspect ratio instead of a square size, leading to a significant reduction in disk space usage for newly generated pyramids.
- MasterWindow UI menus have been reorganized. Help -> about shows the git revision used for the build.
- The DisplayGroup, ContentWindow and related classes have undergone profound refactorings and now follow an MVC pattern.
- Use of global variables has been drastically reduced.
- The CMakeLists.txt follows common Eyescale/CMake conventions.
- MPI message headers are now separate from dc::Stream message headers.
- The OpenGL rendering code has been improved, but still needs more attention.
- Multithreaded MPI communication between the processes brings significant performance improvements.
- PixelStream dispatch rate from master application is based on feedback from wall applications for a correct flow control.
- The handling of Content dimensions is greatly simplified and the ContentDimensionsRequest has been removed.
- Separate Introduction page from Release Notes for more clarity.
- Fixed DynamicTexture LOD mechanism. Textures are now displayed at the correct resolution.
- Fixed startup crash with an empty background.
- Fixed crashes when opening incorrect State files.
- Fix crash on streaming client exit, fix signaling of new events.
- Fixed multi-source PixelStream intialization.
- All the exit(-1) calls have been replaced by std::exceptions.
- Fixed all cppcheck warnings.
- Fixed build with older FFMPEG versions.
The following bugs were known at release time:
- Sometimes, once closed the dock may refuse to open again ("Already have a
window for stream: Dock").
- Touch events may occasionnaly pass through the active window onto the background.
Please file a Bug Report if you find any other issue with this release.