Qt and vsync/tearing

Question

Does anyone know of an easy way to enforce vsync in Qt, when displaying an image onto a QLabel? Basically, I'm rendering a stream of images from a processed video clip (hence not using Phonon multimedia), and the framerate is very high. Unfortunately, this is giving a lot of tearing.

Any help much appreciated.

Answer 1

Try using QtOpenGL. You can implement your widget over QGLWidget. It will render using opengl, that will sinc to vblank if you set this option in your os.