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A new set of enabler classes have been added, most importantly QWindow, QScreen, QSurfaceFormat, and QOpenGLContext. These are now used as backends for the Qt Widgets module and by l

2.
OpenGL Classes
Most of the useful l

classes have been polished and moved into Qt GUI. A few important ones are, QOpenGLFramebufferObject, QOpenGLShaderProgram, QOpenGLFunctions, and so on. For the complete list, refer to Qt GUI C++ Classes.
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