Scalable Realistic Rendering with Many-Light Methods
Article first published online: 14 NOV 2013
© 2013 The Authors Computer Graphics Forum © 2013 The Eurographics Association and John Wiley & Sons Ltd.
Computer Graphics Forum
Volume 33, Issue 1, pages 88–104, February 2014
How to Cite
Dachsbacher, C., Křivánek, J., Hašan, M., Arbree, A., Walter, B. and Novák, J. (2014), Scalable Realistic Rendering with Many-Light Methods. Computer Graphics Forum, 33: 88–104. doi: 10.1111/cgf.12256
- Issue published online: 24 FEB 2014
- Article first published online: 14 NOV 2013
- Intel Visual Computing Institute in Saarbrücken
- DFG. Grant Number: DA 1200/1-1
- Czech Science Foundation. Grant Number: P202-13-26189S
- global illumination;
- ray tracing;
- I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism—Ray tracing
Recent years have seen increasing attention and significant progress in many-light rendering, a class of methods for efficient computation of global illumination. The many-light formulation offers a unified mathematical framework for the problem reducing the full lighting transport simulation to the calculation of the direct illumination from many virtual light sources. These methods are unrivaled in their scalability: they are able to produce plausible images in a fraction of a second but also converge to the full solution over time. In this state-of-the-art report, we give an easy-to-follow, introductory tutorial of the many-light theory; provide a comprehensive, unified survey of the topic with a comparison of the main algorithms; discuss limitations regarding materials and light transport phenomena and present a vision to motivate and guide future research. We will cover both the fundamental concepts as well as improvements, extensions and applications of many-light rendering.