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 This topic has 2 replies, 2 voices, and was last updated 2 years, 3 months ago by xiexuefeng. Viewing 1 reply thread Author Posts 2022年5月29日 at 下午1:08 #11622 Score: 0 xiexuefengParticipant 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😂 Attachments:You must be logged in to view attached files. 2022年5月30日 at 下午6:24 #11634 Score: 1 charvlParticipant Karma: 2 pts 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. 2022年6月1日 at 下午2:49 #11654 Score: 0 xiexuefengParticipant 多谢,都忘了i和o关于m对称了…… Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In