imx6Dual rendering OpenGl ES on 2d GPU

[Alex92]

I'm using imx6 and Qt QML for GUI. Qt is using OpenGL ES on the target platform. I have a simple 2D UI without any 3D model with a resolution of 1920x720 and I have some issues with frame rate. the documentation IMX_GRAPHICS  states:

now my question is :

Do I have to use 2D APIs for rendering on 2D GPU?

is my current application being rendered on 3D GPU? if yes, is there any way for rendering QML on 2d GPU?

[Alex92]

Thanks,
Just to make it clear, when I'm using OpenGL as the backend in my program, I will end up using 3D GPU, not the 2D one? Am I right?

[Zhiming_Liu]

Yes, you can use g2d api to render in program, but we never use g2d in qt before.