Function rs_pbrt::core::integrator::uniform_sample_one_light

pub fn uniform_sample_one_light(
    it: &dyn Interaction, 
    scene: &Scene, 
    sampler: &mut Sampler, 
    handle_media: bool, 
    light_distrib: Option<&Distribution1D>
) -> Spectrum

Estimate direct lighting for only one randomly chosen light and multiply the result by the number of lights to compensate.