are the light effects and specular patterns that are cast on surfaces
as a result of focused light reflecting off highly reflective surfaces
or refracting through translucent surfaces.
The light patterns that
occur on the bottom of a swimming pool on a sunny day, or the bright
areas that occur in the shadow of a glass object as light shines
through it are examples of caustics.
The Caustic feature in
the mental ray® for
simulates caustic effects in your Maya scenes. Caustics are similar
to Global Illumination in that they
are an indirect illumination effect.
In this lesson you learn
- Create the shadow effect that results
from the refraction and concentration of light through a transparent
object, using the Caustic feature provided in the mental ray for
- Adjust refraction level limits in order
to achieve desired refractive effects with transparent objects.
- Systematically perform test renders and
adjust the render and caustic quality settings in order to achieve
a high quality image.