通过渐进光照贴图 (Progressive Lightmapper) 为烘焙光照探针启用旧版固定样本数量。
固定样本数量为:64 个直接样本、2048 个间接样本和 2048 个环境样本。禁用此功能会将光照探针样本数量与为光照贴图指定的样本数量联系起来。禁用此功能时,光照设置中会提供一个乘数,这样可将多个样本用于光照探针。原因是光照探针覆盖的区域比光照贴图纹理像素覆盖的区域大,因此通常需要融合更多样本。
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