QOpenGLFrameBufferObject blitting with QOpenGLWidget



  • I am upgrading a Qt4 app to Qt5. On the Qt4 side I have a QGLWidget with a separate thread that does all the rendering. I have updated both of these to follow the mechanism described in the QOpenGLWidget docs and seen in the Qt5 examples. My scfreens updates are a bit jerky on the Qt5 side, so I want to try and use blitting as mentioned in the QOpenGLWidget docs to see if there is any improvement. I tried by creating a QOpenGLFrameBufferObject in the rendering thread and then used the fbo handles to call glBlitNamedFramebuffer but I always had a seg fault.

    How do you properly blit as mentioned in th Qt docs?

    Note: I am very new to opengl and the Qt4 app was written previously. I'm just updating it.


Log in to reply
 

Looks like your connection to Qt Forum was lost, please wait while we try to reconnect.