Graphics Reference
In-Depth Information
Figure 6-64
Different possible hair types and styles
Lighting and Rendering
Ingeneral,mostofthesameprinciplesapplytolightingparticlesastolightingotherthings.Three-pointlighting
is effective if used sparingly. Shadows can be an important component to hair—it will be noticeable if an un-
shadedmeshcanbeseenunderhair—socareshouldbetakenthatshadowsaredealtwithwherenecessary.This
does not necessarily mean that ray tracing should be used. In fact, if you've tried to render any of the examples
you've seen so far in this chapter, you should already have a sense of some of the issues with rendering hair.
There is potentially a
lot
of geometry there for a ray tracer to navigate. Fortunately, several new features enable
scenes containing hair to be rendered more efficiently. It's notable that almost no ray tracing was used in the
rendering of
Big Buck Bunny
, with the exception of a few shots in which flowing water figured heavily. This
