Dev Loop

QML and Qt for Python interaction

Published Monday May 14th, 2018
7 Comments on QML and Qt for Python interaction
Posted in Qt for Python

Besides QtWidgets for desktop applications, Qt has another UI technology, QML. Today, I would like to show how QML interacts with Qt for Python, roughly based on the tutorial example declarative/extending/chapter3-bindings. First, let’s have a look at the typical boiler plate code for loading a .qml file. We instantiate a QGuiApplication and a QQuickView. We set […]

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Eirik Aavitsland

Compressed Textures in Qt 5.11

Published Monday May 7th, 2018
8 Comments on Compressed Textures in Qt 5.11
Posted in Embedded, OpenGL, Qt Quick, Qt Quick 2, Uncategorized | Tags: ,

As modern user interfaces become ever more graphics intensive, the demands on graphics memory to hold the textures increase. This is particularly relevant for embedded systems, where resources come at a higher premium, and can be a challenge for system performance. One of the key remedies for this is to reduce the memory requirements of the […]

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Hello Qt for Python

Published Friday May 4th, 2018
58 Comments on Hello Qt for Python
Posted in Qt for Python

The first Qt for Python technology preview release is almost here, and for this reason we want to give a brief example on how it will open the doors to the Python world. Let’s build a simple application to show the simplicity of Qt for Python using QWidgets. Every script will have more or less the same […]

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Mikhail Svetkin

Qt on Microcontrollers (MCU)

Published Thursday May 3rd, 2018
16 Comments on Qt on Microcontrollers (MCU)
Posted in Dev Loop, Embedded | Tags: , , ,

People often ask us about if it’s possible to use Qt for software development on microcontrollers (MCU), and if Qt can run without an operating system (“bare metal”). Today we will answer these questions and show you some concrete examples. What is the point of using microcontrollers? MCUs are small computers on a single integrated circuit. They’re similar to […]

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Timo Aarnipuro

Participating the GENIVI All Member Meeting 2018 in Munich

Published Wednesday May 2nd, 2018
Comments Off on Participating the GENIVI All Member Meeting 2018 in Munich
Posted in Automotive

The GENIVI All member meeting was held this year in Munich. I had the pleasure of joining the discussions on domain interaction, graphics sharing and hypervisor use in the automotive space. One of the most interesting presentations on graphics sharing was given by BMW Car IT on the Ramses project, which allows transmitting a graphics […]

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Tuukka Turunen

Qt Quick Performance Improvements on 64-bit ARM

Published Tuesday April 24th, 2018
5 Comments on Qt Quick Performance Improvements on 64-bit ARM
Posted in Biz Circuit & Dev Loop, Performance, Qt Quick

One of our major goals for Qt 5.9 LTS was to improve the performance and memory consumption compared to our previous long-term-support release Qt 5.6 LTS. In this blog post, I want to highlight the performance increase in modern embedded processors that support the 64-bit ARMv8 instruction set. The result: Today, QML performance is almost […]

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