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Chapter 20. Advanced Rendering > Light Tracer (Global Illumination)

Light Tracer (Global Illumination)

Global illumination takes the light bouncing off surfaces in the scene and adds it to the overall lighting solution. It is fairly easy to set up, and it can be used interchangeably with the standard Default Scanline Renderer, though it was designed to work in scenes that have a skylight placed in them. It doesn't require size accuracy (you make scenes to any scale you want) and is best used for outdoor scenes.

In the illustrations below (Figures 20.1220.14), note the variations in quality in the time required to render a 1280-by-960 image on a 2.53 GHz computer with 1 GB of RAM.


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