This post by Peter Messmer on the NVIDIA Parallel Forall blog provides the basic steps to create a (full) OpenGL context using EGL in a headless environment, with code examples. EGL context creation is particularly relevant for accelerated rendering on HPC systems or in a cloud environment, where context management via X11 is often times impractical. Applications include in situ visualization and CUDA/OpenGL interoperation.
The upcoming Qt 5.6.0 release includes the Qt Charts 2.1.0 add-on. This Qt Charts release contains new features and bug fixes based on customer requests. The biggest visible improvement done to Qt Charts 2.1.0 is a performance related change. For line and scatter series we’ve added support of accelerated drawing with OpenGL. The change radically improves performance in cases involving large data sets. We’ve added the OpenGL Accelerated Series Example to show how you can enable OpenGL acceleration for QLineSeries and QScatterSeries.