Rendering Techniques
Most materials used in real-time computer graphics today only account for the interaction of light at the surface of an object. In reality, many materials are slightly translucent: light enters the surface; is absorbed, scattered and re-emitted — potentially at a different point. Skin is a good case in point; only about 6% of reflectance is direct, 94% is from subsurface scattering. An inherent property of semitransparent materials is absorption. The further through the material light travels, the greater the proportion absorbed. To simulate this effect, a measure of the distance the light has traveled through the material must be obtained.
Read more about this topic: Subsurface Scattering
Famous quotes containing the words rendering and/or techniques:
“By rendering the labor of one, the property of the other, they cherish pride, luxury, and vanity on one side; on the other, vice and servility, or hatred and revolt.”
—James Madison (1751–1836)
“It is easy to lose confidence in our natural ability to raise children. The true techniques for raising children are simple: Be with them, play with them, talk to them. You are not squandering their time no matter what the latest child development books say about “purposeful play” and “cognitive learning skills.””
—Neil Kurshan (20th century)