Graphics

Laszlo Agocs

Using modern OpenGL ES features with QOpenGLFramebufferObject in Qt 5.6

Published Monday September 21st, 2015 | Comments Off on Using modern OpenGL ES features with QOpenGLFramebufferObject in Qt 5.6
Posted in Embedded, Graphics, Mobile, OpenGL

QOpenGLFramebufferObject is a handy OpenGL helper class in Qt 5. It conveniently hides the differences between OpenGL and OpenGL ES, enables easy usage of packed depth-stencil attachments, multisample renderbuffers, and some more exotic formats like RGB10. As a follow up to our previous post about OpenGL ES 3 enhancements in Qt 5.6, we are now […]

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Laszlo Agocs

Cross-platform OpenGL ES 3 apps with Qt 5.6

Published Wednesday September 9th, 2015 | 7 Comments on Cross-platform OpenGL ES 3 apps with Qt 5.6
Posted in Embedded, Graphics, Mobile, OpenGL

Now that the alpha release for Qt 5.6 is here, it is time to take a look at some of the new features. With the increasing availability of GPUs and drivers capable of OpenGL ES 3.0 and 3.1 in the mobile and embedded world, targeting the new features these APIs provide has become more appealing […]

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Laszlo Agocs

Qt 5.5, computer vision, and the Nitrogen6X

Published Thursday June 4th, 2015 | 3 Comments on Qt 5.5, computer vision, and the Nitrogen6X
Posted in Embedded, Graphics, Multimedia, Qt Quick 2

In a previous post we have introduced one of the many new features of the upcoming Qt 5.5: the ability to easily integrate image processing and vision algorithms with camera and video streams via Qt Multimedia. It is now time to see the briefly mentioned OpenCV-based example in more detail. Nitrogen6X is a single board […]

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Laszlo Agocs

Integrating custom OpenGL rendering with Qt Quick via QQuickFramebufferObject

Published Monday May 11th, 2015 | 7 Comments on Integrating custom OpenGL rendering with Qt Quick via QQuickFramebufferObject
Posted in C++, Embedded, Graphics, OpenGL, Qt Quick

Integrating custom OpenGL rendering code, for example to show 3D models, with Qt Quick is a popular topic with Qt users. With the release of Qt 5.0 the standard approach was to use the beforeRendering and afterRendering signals to issue the custom OpenGL commands before or after the rendering of the rest of the scene, […]

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Laszlo Agocs

Qt Quick with the power of OpenCL on Embedded Linux devices

Published Monday April 20th, 2015 | 9 Comments on Qt Quick with the power of OpenCL on Embedded Linux devices
Posted in C++, Embedded, Graphics, Multimedia, OpenGL, Qt Quick

Many Qt users encounter a need to integrate GPU compute solutions into their Qt-based applications. What is more, with the advent of compute API implementations and powerful GPUs on embedded devices, using OpenCL or CUDA on an Embedded Linux device is a reality now. In a previous post we looked at NVIDIA’s Jetson TK1 board […]

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Laszlo Agocs

Introducing video filters in Qt Multimedia

Published Friday March 20th, 2015 | 15 Comments on Introducing video filters in Qt Multimedia
Posted in Graphics, Multimedia, OpenGL, Qt Quick

Qt Multimedia makes it very easy to get a video stream from the camera or a video file rendered as part of your application’s Qt Quick scene. What is more, its modularized backend and video node plugin system allows to provide hardware accelerated, zero copy solutions on platforms where such an option is available. All […]

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Laszlo Agocs

Qt Weekly #28: Qt and CUDA on the Jetson TK1

Published Tuesday March 3rd, 2015 | 7 Comments on Qt Weekly #28: Qt and CUDA on the Jetson TK1
Posted in Compilers, Embedded, Graphics, OpenGL, QPA

NVIDIA’s Jetson TK1 is a powerful development board based on the Tegra K1 chip. It comes with a GPU capable of OpenGL 4.4, OpenGL ES 3.1 and CUDA 6.5. From Qt’s perspective this is a somewhat unorthodox embedded device because its customized Linux system is based on Ubuntu 14.04 and runs the regular X11 environment. […]

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Diana de Sousa

Qt Creator flat style UI design + new Light theme

Published Monday February 9th, 2015 | 87 Comments on Qt Creator flat style UI design + new Light theme
Posted in Design, Graphics, QtCreator | Tags: , ,

We have been thinking about the idea of updating the Qt Creator GUI with a more contemporary flat style design, and adding a Light theme in addition to the current Default and Dark themes. Moreover, all the icons in the UI would be simplified and become consistently unified under the same style. Down below are […]

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Morten Johan Sørvig

Qt Weekly #24: High-dpi QtWayland

Published Tuesday January 27th, 2015 | 1 Comment on Qt Weekly #24: High-dpi QtWayland
Posted in Graphics

Those of you following QtWayland development closely might have seen commit 7ef5e2e4 – Implement high-dpi support. In this blog we’ll look at some examples and show how to test the support on high and normal dpi hardware. Wayland Wayland 1.2 added support for high-dpi scaling via wl_output::scale wl_surface::set_buffer_scale wl_output::scale is used by the compositor to […]

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