How to rotate application in eglfs

[victor wang]

Hi All,
I'm using eglfs without X server.
I had designed an application that need to rotate the screen to 90 degree.

I had try export QT_QPA_EGLFS_ROTATION=90 and execute my application by below command.

./application -platform eglfs

But screen did not rotate successfully.
I tried to do below command too.

echo 1 > /sys/class/graphics/fbcon/rotate

But this can only rotate console not my application.

Did I miss anything?

Thanks in Advanced!