GPU Gems 3

Chapter 9. Interactive Cinematic Relighting with Global Illumination

Fabio Pellacini Dartmouth College

Miloš Hašan Cornell University

Kavita Bala Cornell University

Introduction

Cinematic lighting design is the process artists use for defining the look of each frame in a feature film by carefully setting all the parameters of the light shaders. Rendering high-quality images interactively for cinematic lighting is becoming a necessity, but it remains a challenge due to the complex data sets used in production rendering.

For faster user feedback, relighting engines were developed to take advantage of the fact that lighting artists are often interested in changing light parameters during lighting design—not the camera, objects, or materials. Relighting ...