These two features in LightWave enable
you to take your 3D creations even further by adding more real-world lighting properties.
Inside LightWave v9 150
Figure 4.8 The Global Illumination control tab,
found in the Render Globals panel, governs such
properties as global light intensity, global lens flare
intensity, radiosity, and caustics.
Chapter 4 Lighting 151
Note
Radiosity is a rendering solution that calculates the diffused reflections of lights in a scene.
It is the rate at which light energy leaves a surface. This also includes the color within all
surfaces. In simpler terms, radiosity is bounced light. A single light coming through a window,
for example, can light up an entire room. The light hits the surfaces of the objects
and bounces, lighting up the rest of the room, in turn creating a realistic image. Ambient
light is often considered a poor man??™s radiosity. You can use it to brighten areas not
directly lit by lights.
You??™ll use radiosity and learn more about its settings later in Chapter 15, ???Advanced
Cameras and Rendering???.
Caustics are created when light is reflected off a surface or through a refracted surface.
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