Home Forums GAMES在线课程(现代计算机图形学入门)讨论区 对虎书内容的请教–关于冯着色模型

  • This topic has 0 replies, 1 voice, and was last updated 1 month ago by Uan.
Viewing 0 reply threads
  • Author
    Posts
    • #20066 Score: 0
      Uan
      Participant

      对于冯着色模型,虎书第四版在第238页对半程向量h有如下描述”The disadvantage is that a square root and divide is needed to compute h. “。( 与之对比的是反射光线r的计算公式”r = −l +2(l · n)n” )

      想请教一下,原文的意思是“与计算反射向量相比,计算半程向量需要对结果进行单位化”吗?这种理解是不是不太对,反射向量在后续计算余弦的时候也需要做一次单位化吧?

Viewing 0 reply threads
  • You must be logged in to reply to this topic.