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Appendix A: The Bottom Line > Chapter 10: mental ray Shading Techniques

Chapter 10: mental ray Shading Techniques

Understand shading concepts Light rays are reflected, absorbed by, or transmitted through a surface. A rough surface diffuses the reflection of light by bouncing light rays in nearly random directions. Specular reflections occur on smooth surfaces; the angle at which rays bounce off a smooth surface is equivalent to the angle at which they strike the surface. Refraction occurs when light rays are bent as they are transmitted through the surface. A specular highlight is the reflection of a light source on a surface. In CG rendering, this effect is often controlled separately from reflection; in the real world, specular reflection and highlights are intrinsically related.

Master it Make a standard Blinn shader appear like glass refracting light in the jelly-beans_v01.ma scene in the chapter10\scenes folder of the DVD.


  

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