Function pbrt::integrators::bdpt::generate_camera_subpath

pub fn generate_camera_subpath<'a>(
    scene: &'a Scene, 
    sampler: &mut dyn Sampler, 
    max_depth: u32, 
    camera: &'a Arc<dyn Camera + Send + Sync>, 
    p_film: &Point2f, 
    path: &mut Vec<Vertex<'a, 'a, 'a>>
) -> (usize, Point3f, Float)