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Chapter 11. Photometric Lights: Bouncing... > Controlling Radiosity Using Material...

Controlling Radiosity Using Materials

The next level of control you have when rendering radiosity is with the materials in the scene. You'll learn more about materials in Chapters 12, 13, and 14, but in this and the next section you'll learn about some adjustments that influence the reflectance and color bleed in radiosity rendering, including color value and Advanced Lighting Override material.

The value or the brightness of the diffuse color (color in direct light) and ambient color (color in shaded areas) in a material affects the amount of light bounced from a surface. The hue (red, blue, and so on) of the material's color affects the tinting of the scene caused by color bleed. In the exercise that follows, you'll change the color of the floor material in the scene to affect the overall tint of the rendered image. Then you'll adjust the value (brightness) of the color to affect how much of the light striking the floor surface is bounced into the room.


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