An OpenVRViewport represents a viewport occupying a specified rectangle of a window (range 0 to 1) which renders the 3D scene using the projection and distortion calculated by the OpenVR SDK.
bool - When enabled, viewport is drawn to the screen
vec4f - The viewport bounds, scaled on the screen by the ViewportLayout size. (e.g. layout size 2.0, 1.0, and child viewport width 1.0 will fill half the screen with the viewport)
link - The camera from which the scene is rendered
vec2w - Specifies the default near and far clip planes for this viewport
bool - if true some of the image seen in the rift will be cropped when displayed in the main window.
bool - if true then both eyes will be displayed in a split screen fashion
bool - whether or not to draw the mirror viewport to the main window
bool - forces interleaved reprojection to be enabled