Here is what I have - I have a plane with unlit masked material that is a child of the camera and is located really close to it.
When I run test in the Editor, it renders full screen, no clipping. When I test it on the device (mobile), something clips it to a small square. If I move it far enough, it will cover full screen, but then it will end up inside walls.
I can’t use post process material, since it’s for mobile VR. How can I have my plane not to be clipped and not get inside walls (basically it should render in front of everything in the scene) ?