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:
“Americans are notorious for looking to their children for approval. How our children turn out and what they think of us has become the “final judgment” on our lives. . . . We imagine that the rising generation is rendering history’s verdict on us. We may resent children simply because we expect a harsh judgment from them.”
—C. John Sommerville (20th century)
“The techniques of opening conversation are universal. I knew long ago and rediscovered that the best way to attract attention, help, and conversation is to be lost. A man who seeing his mother starving to death on a path kicks her in the stomach to clear the way, will cheerfully devote several hours of his time giving wrong directions to a total stranger who claims to be lost.”
—John Steinbeck (1902–1968)