Hi, The requirement are simple: 2D painting needs to be possible and i want to toggle between raster and OpenGL. QML or _depending_ on the GPU is out of the question. Animations are also not required. Things that are required are zoomnig controls, selecting drawn objects and rendering has to be high performance. It must be capable of drawing a _lot_ of primitive objects (think about numbers between 100.000 and 1 million).
Given those requirements i know of two different ways to accomplish the same result. 1. QWidget and QOpenGLWidget (new in Qt 5.4). They would both use QPainter. Basically the 2dpainting example [1] that is provided with Qt. 2. Using QGraphicsView. It defaults to raster based painting and can be accelerated by calling setViewport(new QOpenGLWidget) on it. This can be done in basically all of the GraphicsView examples [2]. Those are the options that i know of where it's possible to toggle between hardware and software rendering. Is this it or are there even more options out there in the Qt world? It's unclear to me which of the possible options is the advised way to go when drawing something in 2D. Therefore my question: which one would be the advised way to use given the requirements said earlier? [1] https://qt.gitorious.org/qt/qt/source/examples/opengl/2dpainting [2] https://qt.gitorious.org/qt/qt/source/examples/graphicsview _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
