+ The QOpenGLPaintDevice uses the current QOpenGL context to render
+ QPainter draw commands. It requires OpenGL (ES) 2.0 support or
+ higher.
+
+ \section1 Performance
+
+ The QOpenGLPaintDevice is almost always hardware accelerated and
+ has the potential of being much faster than software
+ rasterization. However, it is more sensitive to state changes, and
+ therefore requires the drawing commands to be carefully ordered to
+ achieve optimal performance.
+
+ \section1 Antialiasing and Quality
+
+ Antialiasing in the OpenGL paint engine is done using
+ multisampling. Most hardware require significantly more memory to
+ do multisampling and the resulting quality is not on par with the
+ quality of the software paint engine. The OpenGL paint engine's
+ strenght lies in its performance, not its visual rendering
+ quality.
+
+ \section1 State Changes
+