Vira Rendering (IMAGE) NASA/Goddard Space Flight Center Caption Vira can accurately render indirect lighting, which is when an area is still lit up even though it is not directly facing a light source. Credit NASA Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.