采样光照贴图纹素时使用的子纹素位置数量。
采样光照贴图纹素时使用的子纹素位置数量。大于 1 的值将使用超采样来提高光照贴图质量并减少与混叠相关的伪影。
默认值为 4，应该足以消除大多数混叠问题。但是，在某些情况下，可能需要增加子纹素采样位置的数量。这在观察到直接照明中“锯齿状”边缘的情况下特别有用。通常，这在使用烘焙阴影时更明显。
请注意，内存使用量与使用的采样数量成正比。因此，在大型场景中使用高值可能会增加光照贴图烘焙无法完成的可能性，尤其是在使用大型光照贴图纹理大小时。
其他资源: LightmapParameters.antiAliasingSamples.
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