https://forum.qt.io/topic/56277/grabframebuffer-of-qglwidget-not-working-with-nvidia
grabFramebuffer() of QGLWidget not working with nvidia | Qt Forum
Jul 14, 2015 - Hi I'm using grabFramebuffer() in my QGLWidget class to get a screenshot of my QGLWidget. It works fine on all systems I've got, but since moving to a NVIDIA...
not workingnvidiaqtforum