4.1 - 衰减指数(4.1 - Falloff Exponent)

光照示例关卡概述,示例4.1:衰减指数(Falloff Exponent)

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4.1 - 衰减指数(4.1 - Falloff Exponent)

本示例展示了使用 衰减指数 来控制光线的衰减。衰减的定义是,光线从光源向外传播时光线损失能量的速率。不使用示例4.2 中说明的 平方反比衰减(Inverse Square Falloff) 时,将使用此数字作为指数,提供 指数式衰减。指数式衰减往往可以跟真实情况比较接近,但是通常最适用于风格化视觉效果。

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