Home Forums GAMES在线课程(现代计算机图形学入门)讨论区 作业3 bump_fragment_shader TBN中 T与N不是互相垂直

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    • #4449 Score: 2
      打雷要下雨雷欧
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      2 pts

      疑惑

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    • #4450 Score: 0
      打雷要下雨雷欧
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      2 pts

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    • #4457 Score: 0
      戴皓天
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      8 pts

      https://www.cnblogs.com/lookof/p/3509970.html

      关于切线的求法这篇文章写的挺通俗的,你可以参考一下

      (但是我还是不明白为什么我们框架里切线要这么求😂

      • #4474 Score: 1
        FactorialN 刘光哲助教
        Keymaster
        14 pts

        因为本次实验的目的只是为了使各位大致了解 bump mapping 和 displacement mapping 的过程,因此细节一切从简😂(否则也就不会给出这么详尽的注释了

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    • #4473 Score: 2
      FactorialN 刘光哲助教
      Keymaster
      14 pts

      你说得对,严格意义上确实应保证 T 与 N 相互垂直,但是这样的话就只有球形模型能比较优雅地达到我们需要的效果。
      然而即使不垂直我们也一样可以得到逻辑上说得通的结果,加之出于对实验的一致性的考虑,我们最终决定强行在牛模型上做完整个算法。

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    • #4476 Score: 0
      打雷要下雨雷欧
      Participant
      2 pts

      谢谢解答

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