1.5 - 环境立方体贴图

后期处理示例关卡概述,示例1.5: 环境立方体贴图

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1_5_01.png

环境光立方体贴图 从提供的图像照亮场景。该图像映射到远距离处的球体(实现为立方体贴图纹理,用mip贴图存储预先模糊处理的图像版本)。 模糊版本的计算方式让它们能够用于光泽度有所变化的高光照明(清晰与模糊反射),它们也可以用于漫射光线。 这种效果与从中照亮材质的位置无关。观看者位置、材质粗糙度(针对高光效果)和材质表面法线都会考虑在内。

环境光立方体贴图具有非常有限的局部阴影(仅限SSAO)。表示天空照明时改为使用天空光照

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