28.02.2017 
We have released version 2.7 of our Qt application introspection tool GammaRay. GammaRay allows you to observe the behavior and data structures of Qt code inside your program live at runtime. Here are a few of the highlights of this release: The new Qt 3D geometry inspector allows you to look at a wireframe rendering of entity geometries, […]
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Integrating OpenGL with Qt Quick 2 applications (part 2) Implementing overlays and underlays with the Qt Quick 2 renderer
In the last blog post we gave a very high level introduction to the Qt Quick 2 renderer. We also showed how various signals are emitted by the renderer during the synchronization and rendering steps. In this blog post we’re going to discuss those signals and show how they can be used to implement overlays […]
QtCon Videos On-line
We’re delighted all the QtCon talks have now been released, thanks to the hard work of the folks at KDE. Many KDABians attended QtCon and contributed to the unique new Qt event we co-created in Berlin, September 2016, along with Qt Contributors, KDE Akademy, VideoLan and FSFE. KDAB funded the event upfront and was Gold sponsor at QtCon […]
Integrating OpenGL with Qt Quick 2 applications Part 1
This talk will introduce you to various effective strategies of drawing raw OpenGL content inside a Qt Quick 2 scene. After a brief introduction to how the Qt Quick 2 renderer works, we will see the APIs in Qt 5.6 that allow us to integrate existing OpenGL code and QML. One of the foundation pillars […]
Writing custom Qt Quick components using OpenGL Kevin Funk
Qt Quick and QML provide an easy way to rapidly develop customized, reusable components entirely within QML. As these components grow in complexity, performance and maintainability often suffer, a drawback that is especially noticeable on low-powered embedded and mobile devices. In addition, some specialized components simply cannot be implemented by combining existing Qt Quick items […]
Qt 3D Basics Kevin Ottens
Having 3D scenes in your application is becoming a clear trend and is likely to become even more important in the future with the growth of Virtual Reality and Augmented Reality. So far Qt was allowing you to integrate with Open GL fairly easily, but managing the rendering code itself was still a very […]
Refactor Your OpenGL Legacy With Style QtCon presentation by Kevin Ottens
Using OpenGL code with Qt is a long love story… long enough that there might be skeletons in the closet. Indeed, the OpenGL code of your Qt application could have been written before the modernization of the OpenGL API to exploit better GPUs. In this talk, we will walk through a technique to help refactor […]
Qt 3D and Physics Based Rendering QtCon presentation
Physics Based Rendering (PBR) is the latest and greatest trend in real-time rendering yielding much more visually believable images than the traditional Phong or ad-hoc lighting models. The underlying concept is that the shaders should use physical principles in the encoded models – chief of which are conservation of energy and the Fresnel effect. PBR […]
KDAB talks at QtCon 2016
Hello! This is a small wrap-up fromQtCon, the biggest Qt event in Europe in 2016, that happened at the beginning of September. At QtCon the Qt community joined forces with the KDE, FSFE and VideoLAN communities, to create an exciting event in the spirit of open collaboration and participation amongst projects. During QtCon many KDAB […]
KDAB contributions to Qt 5.7
Hello, and welcome to the usual appointment with a new release of Qt! Qt 5.7 has just been released, and once more, KDAB has been a huge part of it (we are shown in red on the graph): In this blog post I will show some of the outstanding contributions by KDAB engineers to the […]