Ray function ( ) { return shadowRay ; }
get the sample 's shadow ray . concode_field_sep Color lspec concode_elem_sep LightSample next concode_elem_sep Color ldiff concode_elem_sep Ray shadowRay concode_field_sep void traceShadow concode_elem_sep void setShadowRay concode_elem_sep Color getSpecularRadiance concode_elem_sep boolean isValid concode_elem_sep float dot concode_elem_sep Color getDiffuseRadiance concode_elem_sep void setRadiance