Function rin::graphics::screen_to_world

pub fn screen_to_world(
    screen: &Point<f32, U2>, 
    depth: ScreenZ, 
    projection_view: &Matrix<f32, U4, U4, <DefaultAllocator as Allocator<f32, U4, U4>>::Buffer>, 
    viewport: &Rect<i32>
) -> Point<f32, U3>

Converts a screen position + a z value in either world coordinates or normalized depth into a world 3d position