qopenglfunctions | 易学教程

How to map a saved texture directly on a QuickItem & display it?

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问题 In my Qt app with C++ , I am using a QQuickItem derived class to display textures which are produced on every frame render by running some filters on each frame render. this works fine. Next, I used the takeTexture method provided by QOpenGLFramebufferObject to save some textures & display them back whenever required. These saved textures are of type GLuint s. I am able to display it back using the normal OpenGL rendering pipeline. It works well. But, Is there a way I can avoid the rendering

QOpenGLWidget with QApplication?

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问题 We have a QWidget based application that was previously using a QWindow for OpenGL rendering. To fit that window in our application we had to use QWidget QWidget::createWindowContainer(QWindow); Previously we only used external to Qt OpenGL libraries for rendering. We have a desire to switch from using QWindow to some kind of QWidget for compatibility with touch gestures, and generally better overall compatibility with the rest of our application. The latest recommended OpenGL compatible

QOpenGLWidget with QApplication?

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We have a QWidget based application that was previously using a QWindow for OpenGL rendering. To fit that window in our application we had to use QWidget QWidget::createWindowContainer(QWindow); Previously we only used external to Qt OpenGL libraries for rendering. We have a desire to switch from using QWindow to some kind of QWidget for compatibility with touch gestures, and generally better overall compatibility with the rest of our application. The latest recommended OpenGL compatible QWidget seems to be QOpenGLWidget, so we are trying to use that. glContext is an OpenGLContext that we