Working with Advanced Lighting Materials


Applying an advanced lighting solution can have a direct impact on the materials in the scene. The Material Editor includes two materials that are useful for working with advanced lighting: Advanced Lighting Override and Lightscape materials.

Advanced Lighting Override

The Advanced Lighting Override material type includes material parameters that override the global Advanced Lighting solution. These parameters let you set the amount of Reflectance, Color Bleed, Transmittance, Luminance, and Bump Map Scale that the material uses. This offers a way to make a specific material have its own defined lighting parameters.

Note 

The Advanced Lighting Override material does not need to be applied to all objects that are to receive advanced lighting. It is used only to override the existing scene settings for certain materials.

As an example of how this material can be used, consider the hot plate example. Rather than excluding objects from the Advanced Lighting calculations, you can instead use the Light Tracer panel to set the global settings for the scene and apply the Advanced Lighting Override material to the hotplate coils with a higher Color Bleed value. This causes the coils to bleed, but not the rest of the scene.

Another common use for this material is to use the Luminance Scale value to cause self-illuminating materials to add light energy to the global illumination calculations.

The Advanced Lighting Override material parameters, shown in Figure 28.15, let you set the amount of Reflectance, Color Bleed, Transmittance, Luminance, and Indirect Light Bump Scale that the material uses.

image from book
Figure 28.15: The Advanced Lighting Override Material rollout defines how light interacts with the material.

Lightscape material

The Lightscape material type lets you apply a material to objects that are imported from Lightscape. They are used to control how the radiosity is mapped to objects. The Basic Parameters rollout includes values for Brightness, Contrast, Ambient Light, and Bump Amount. You also can enable Daylight and Exterior Scene options. These values are applied in addition to the base material.




3ds Max 9 Bible
3ds Max 9 Bible
ISBN: 0470100893
EAN: 2147483647
Year: 2007
Pages: 383

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