Home Forums Games202-高质量实时渲染 [作业4] 关于GGX 重要性采样权重的疑惑

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    • #11622 Score: 0
      xiexuefeng
      Participant

      有人知道GGX重要性采样这里权重的推导,为啥分子上最后变成了o和m的点积了吗,我推导怎么是i和m的点积😂

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    • #11634 Score: 1
      charvl
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      m 是微表面法线,微表面上面进行的是镜面反射,因此 m 就等同于半程向量 h。
      此时 (i·m) = (o·m)

      This post has received 1 vote up.
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