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 […]

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 […]

Some of you may know that Qt 3D is going strong almost entirely due to the work of the KDAB team, led by Dr. Sean Harmer and Paul Lemire. You can read all about its near demise and ultimate rescue here - it’s quite a story, and started with the release of Qt 4. Now […]

Qt 5.6 has just been released! Packed with incredible new features, 5.6 is also the first long term support release of Qt: it will be supported for the next 3 years, giving developers a solid foundation for their current and upcoming projects. Once more, KDAB is confirmed to be the largest independent contributor to Qt, […]

Demonstrates the use of Qt 3D using the QML API to create a high quality, animated 3D visualisation application. The demo shows Qt 3D’s ability to use custom shaders that implement a metal-roughness physics based rendering (PBR) pipeline. The PBR shaders coupled with specially crafted material textures and environment maps gives a very realistic simulation […]

Back in November, Apple released the latest generation of it's Apple TV product. Besides the slightly improved hardware, the true new feature is the OS which is now officially based on iOS and comes with the dedicated SDK and App Store! So we started investigating what it would take to port Qt to tvOS and […]

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 […]

Holoplot UX - Example of modern user interface that could benefit from compressed textures. (KDAB designed UX, photo courtesy of Holoplot.) It’s every programmer’s worst nightmare. Your beautiful app is running at a snail’s pace, crippled by virtual memory swapping. Even worse, you’ve added one last bitmap resource, and suddenly unrelated chunks of the UX […]

The Qt World Summit was a rocking blast! More than 800 delegates, two days packed with sessions (and an additional training day presented by KDAB). Many old faces, lots of new ones, and a packed programme of sessions with terrific technical content. Yours truly also happened to give a talk, "Integrating OpenGL with Qt Quick […]

Good news, everyone! Qt 5.5 has just been released! The release process of Qt 5.5 has been focused on stabilizing and improving performances. Once more KDAB is proud to be a part of the release, with its engineers constantly providing contributions and patches, as demonstrated by the commit graph of the last 16 weeks: In […]

KDAB is pleased to announce that the Qt 5.5.0 release includes a Technology Preview of the Qt3D module. Qt3D provides a high-level framework to allow developers to easily add 3D content to Qt applications using either QML or C++ APIs. The Qt3D module is released with the Technology Preview status. This means that Qt3D will […]

Quick overview of profiling tools QtQuick is often used to create UIs for embedded devices. One SoC that is quite popular at the moment is the i.MX 6 board from Freescale, with its Vivante GC2000 or GC880 3D GPU. Performance on such a device matters, users expect a fluid interaction. With the QML Profiler, Qt […]

Recorded at the Qt Developer Days in Berlin in 2014. Abstract: It is easy to be enthusiastic about the technical merits of Qt. For those having to make technology choice decisions that impact the business for potentially a long time, that is not the only dimension, however. Risks need to be examined and trade-offs identified, […]

JamesTurner and Giuseppe D’Angelo introducing Qt3D 2.0 Abstract: Qt3D 1.0 was created during the Qt4 life-cycle, and has been deprecated since the release of Qt5. Additionally, the API design featured some limitations which restricted the potential use-cases; injecting large amounts of dynamic data into the scene, configuring advanced multi-pass / deferred renderers, and using multiple […]

Abstract: Qt5 introduces better support for OpenGL from the QPA/Lighthouse abstraction, through a new set of OpenGL classes up to QtQuick 2 and Qt3D. OpenGL is also very often used for games and as the central content widget in desktop applications. With the advent of QtQuick 2 it is now easy to write entire user […]

Abstract: Modern OpenGL abandons the old fixed-function pipeline in exchange for a programmable pipeline using shaders and buffer objects. This offers much more flexibility to developers and opens the door to a huge range of effects and techniques whilst at the same time making available huge performance improvements. This presentation will teach you about the […]

Abstract: “QtQuick in Qt5 uses OpenGL to deliver fluid, performant visuals, and an internal scene-graph structure to permit threaded rendering, decoupling the main application thread from interacting directly with the graphics driver. For developers work with an existing rendering or visualisation technology, this presents both an opportunity but also problems; QtQuick offers a compelling, modern […]

We are proud to announce that KDAB is now a contributor member of the Khronos Group, a not for profit, member-funded consortium focused on the creation of royalty-free open standards for parallel computing, graphics and dynamic media on a wide variety of platforms and devices. As a contributor member of the Khronos Group, KDAB is […]

Continuing our blog post series about the rewrite of Qt3D. Introduction For quite some time now, you’ve been hearing about Qt3D's Framegraph. Although a brief definition of what the Framegraph is was given in the previous articles, this blog post will cover it in more detail. After reading this post, you will understand the difference […]

So far we talked about the technical aspects of scaling your application, the dpi, the number of pixels, its nature, the nature of image formats and the implications of all that on the creation of visual elements for your UI. But this is only a part of the problem, for although all this helps you […]