举个例子下图场景，1张HDR+1个默认材质球关闭漫射，IOR调到3，给一个0%，0%，10%的单节点渐变色（其他单色节点也是一样的）。再使用颜色校正节点把gamma调整为2.2，再连接到粗糙度节点。按我的理解现在输入的粗糙度应该是0.1，然后渲染一张，接着断开颜色校正节点直接手动输入粗糙度=0.1再渲染一张，仔细观察的话可以发现两张图的结果是稍有不同的，我不知道是我的线性工作流程理解有误，还是说渲染器本身使用颜色+gamma校正后输出的参数会有偏差？

有人研究过吗

颜色直连粗糙度很明显的错误结果，

gamma校正后确实有模糊，我发到redshift论坛看看是怎么回事

It's all down to the Input Color Profile which by default it's sRGB so if you connect some color to a scalar (non color) parameter like roughness you need to make sure your color is linear thus the reverse gamma but be advised that gamma 2.2 != sRGB in the lower grays so you might have visual differences. If you want to keep your workflow properly linear use a linear workflow and a linear ICP, that's the correct way as it won't require any gamma corrections from colors 2 scalars.