Sean Harmer

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 […]

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 […]

An Example of Rendering with Qt3D In the previous article we learned about the requirements and high-level architecture of Qt3D 2.0. In order to put some of this into context and to give you a concrete example of how it looks to draw something in Qt3D using the QML API, we will now briefly show […]

Introduction Back in the days when Qt was owned by Nokia, a development team in Brisbane had the idea of making it easy to incorporate 3D content into Qt applications. This happened around the time of the introduction of the QML language and technology stack, and so it was only natural that Qt3D should also […]

Following on from the previous articles on SlideViewer, we shall now investigate another piece of the puzzle towards making SlideViewer usable in practise. Namely, getting the content rendered from our domain specific language and on to the screen or projector for the audience to marvel at. Those of you that have ever presented at […]

This article concludes our series on what is new in Qt 5.1 with respect to OpenGL. Earlier articles in this series are available at: Part 1 Part 2 Part 3 Part 4 More shader stages In Qt 5.0 the QOpenGLShader and QOpenGLShaderProgram classes only had support for Vertex and Fragment shaders. Qt 5.1 will include […]

This article continues our series on what is new in Qt 5.1 with respect to OpenGL. Earlier articles in this series are available at: Part 1 Part 2 Part 3 OpenGL Debug Output The traditional way to debug OpenGL is to call glGetError() after every GL function call. This is tedious, clutters up our code, […]

This article continues our series on what is new in Qt 5.1 with respect to OpenGL. If you haven't already seen them, you may be interested in reading Part 1 and Part 2. Timer Queries OpenGL on the desktop exposes a very useful tool in the shape of timer query objects. These can be used […]

This article continues our series on what is new in Qt 5.1 with respect to OpenGL. The first installment can be found here. Vertex Array Objects Qt has QOpenGLBuffer (and before that QGLBuffer) to help manage various types of OpenGL buffer objects such as per-vertex attribute data and element index buffers. OpenGL also has a […]

This blog is the first in a series that will show how to use OpenGL with Qt 5. In this article, we shall take a very quick look at Qt's historical support for OpenGL and then go on to describe the first batch of new features coming in Qt 5.1 that will enhance Qt's OpenGL […]