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Ray Tracing from the Ground Up by Kevin Suffern

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Chapter 28

Realistic Transparency

image

Image courtesy of John Avery

Objectives

By the end of this chapter, you should:

  • understand how real materials reflect and transmit light;
  • understand how color filtering is modeled.
  • have implemented a physically correct transparent material;
  • know how nested transparent objects are modeled.

I’ll present here a physically correct model for reflection and transmission at the boundary of two dielectrics. I’ll also discuss color filtering, as this will allow you to render colored transparent objects and more realistic-looking transparent objects than you could in Chapter 27. The new material will be used to demonstrate ...

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