作业三blinn phong shader的颜色差值不对

[HiveYuan]

我在完成作业3的任务三的时候，发现t.color[2]的颜色取值很不正常，前两个很大，最后一个为负，导致我有些像素的interpolated_color也会为负数，代码如图2-1，t.color[2]的值如图2-2，结果图如2-3.
然后我把t.color[0]直接传给shader，才能得到正常的图，代码如图1-1，结果如图1-2.
但是我看论坛上大家都是直接传interpolated_color,想问一下各位大神我这个是怎么回事

This post has received 1 vote up.

Attachments:

You must be logged in to view attached files.

[HiveYuan]

2-3图在这儿

This post has received 1 vote down.

Attachments:

You must be logged in to view attached files.

[Author]

Posts