Qt 3D makes heavy use of threads, as a way to spread work across CPU cores and maximize throughput, but also to minimize the chances of blocking the main thread. Though nice on paper, the last case eventually leads to added complexity. Sometimes, there are just one too many threads. In the past, we’ve been […]
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C++ Russia is the premier C++ conference in East Europe which alternates between Moscow and Saint Petersburg. The conference lasts for two days starting October 31st. It will be held in the Park Inn by Radisson Pulkovskaya Hotel in the heart of Saint Petersburg. This year, the speaker line-up is quite impressive and includes names […]
As you already know KDAB is the largest independent contributor to Qt code. Of course we didn’t get lazy and we’ve added a lot of cool stuff to Qt 5.14. In this article I’m going to write about the super cool stuff that we’ve added to Qt 5.14 for Android. Android multi arch build in […]
With this blog post we are going to kickstart our brand new blog series about KDToolBox. The first class we’re exploring is KDTableToListProxyModel, a table-to-list proxy model. The main use case for KDTableToListProxyModel is exposing tabular models to Qt Quick. Qt Quick has a certain number of “view” elements that only support list models: for […]
At KDAB we invest a significant amount of efforts in research and development. We are always looking for new tooling, libraries and utilities that can make our job easier and improve the C++ and Qt ecosystems. Ultimately, the gained knowledge and skills make our customers happier. As part of this process we develop lots of […]
In the previous two blogs in this series I showed how solving an apparently simple problem about loading a lot of data into RAM using mmap() also turned out to require a solution that improved CPU use across cores. In this blog, I’ll show how we dealt with the bottleneck problems that ensued, and finally, […]
In my last post, I went through a method of creating a simulated reflection with a simple scene. This time I’d like to take the technique and apply it to something a bit more realistic. I have a model of a car that I’d like to show off in KUESA™, and as we know, KUESA […]
KUESA™ is a Qt module designed to load, render and manipulate glTF 2.0 models in applications using Qt 3D. Kuesa provides a C++ and a QML API which makes it easy to do things like triggering animations contained in the glTF files, finding camera details defined by the designer, etc. It is a great tool so […]
We have released version 2.11.0 of our Qt application monitoring tool GammaRay. GammaRay allows you to observe behavior and data structures of Qt code inside your program live at runtime. GammaRay 2.11 comes with a new inspection tool for Qt’s event handling, providing even more insights into the inner working of your application. Besides looking […]
In Part 1 of this series we solved the problem of using mmap() to load large set of data into RAM all at once. The catch was that it still took too long. In this blog, I describe how we solve this.