In addition to the Qt 4.8 functionality, Qt 5.0 also makes it very easy to create native windows and OpenGL contexts on any platform. This also happens to be the functionality needed by Qt Quick 2. Qt 5.0 exposed basically the same subset of OpenGL functionality as Qt 4.8 did, which is pretty much the intersection of OpenGL 2 and OpenGL ES 2. For new code, the QOpenGL* classes from QtGui are recommended. Also, the new QOpenGL* classes can be used as direct replacements for the older QGL* classes. The reason for these changes is that the new Qt Quick 2 renderer is based upon OpenGL and so is now a core part of Qt’s graphical offerings. In addition to these, Qt also offers some helpful wrappers around other OpenGL object types such as QGLShaderProgram, QGLFramebufferObject, QGLBuffer etc.ĭuring the design of Qt 5, these QGL* classes were marked as “Done” and shiny new QOpenGL* replacements were introduced and placed directly into the QtGui library. These allow drawing with raw OpenGL or with the convenience of the QPainter API respectively.
Most Qt developers are aware of QGLWidget and maybe the various incarnations of the OpenGL-based paint engines. Qt has a long history of supporting drawing with OpenGL.
QT 5.6 OPENGL WINDOWS 10 SERIES
Upcoming blogs in this series will describe more features and show some simple examples of how easy it is to use Qt for OpenGL development. 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 support.
QT 5.6 OPENGL WINDOWS 10 HOW TO
This blog is the first in a series that will show how to use OpenGL with Qt 5.
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