Rendering Equation

The rendering equation models how light interacts with surfaces to produce the images we see. It describes the total light arriving at a point on a surface as a combination of light emitted by the surface itself and light reflected from other sources. This involves considering direct illumination, reflections, and how surface properties influence these interactions. Essentially, it’s a mathematical way to predict the color and brightness of every point in a scene, enabling realistic rendering of images by accurately simulating light behavior.