Video size error with Qt high dpi support

[winsoft666]

Qt Version: 5.13.2
QTAV versoin: last master version.

Qt enable high dpi support：

QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);

GLWidgetRenderer2 size is error. video frame should fill all of window.

[winsoft666]

OpenGLWidgetRenderer is ok, but GLWidgetRenderer2 has problem.