‘Light is the first of painters. There is no object so foul that intense light will not make it beautiful.’
Ralph Waldo Emerson: Nature
Though it’s fair to say that the term ‘Global Illumination’ is nowadays more widely understood, there is still a certain, amount of confusion surrounding the phrase. The key to understanding what the term means lies in the first half of the phrase. This refers to the way an object is lit by its surroundings, in effect the ‘global’ contents of the scene being rendered. Underneath the umbrella term of Global Illumination lies several ...