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Product Version: UE 4.22
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asked Jun 03 '19 at 02:09 PM in Chinese

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你的理解可能有些问题,无光照材质并不会受到光照影响。你搞错的原因是你这里看到的区别是由于debug的viewmode造成的。在lighting阶段后,所有的着色计算两者都是完全相同的,只是在pp的tonemapping阶段有了变化。而发生变化的关键是Exposure的值。在Unlit的viewmode下,引擎的debug标记会标记成全场景都不没有lighting,也就是整个渲染的EngineShowFlag.Lighting是0,也就无从进行EyeAdaption。否则即使你什么灯光都不放,引擎也并不知道你的自发光材质本身会不会对当前亮度产生影响,所以走的代码路径是不同的(注意这里的Unlit viewmode是个debug mode,在真实情况下是不可能存在并走到的)。


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answered Jun 03 '19 at 07:53 PM

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avatar image LittlerStar Jun 04 '19 at 09:47 AM

非常感谢大神提供的帮助alt text

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