Home Forums Games202-高质量实时渲染 作业4关于Jacobian行列式

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      ikio
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      在作业文档第5页,入射方向 i 与 half vector m 的关系为 i = 2 * (m dot o) - o,并给出了 mi 的 Jacobian 为 1 / (4 * (i dot m)) (= 1 / (4 * (o dot m)))。

      但是我算出来的是 1 / (16 * (o dot m)^3),如图。

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