The specular of glass on the mirror is incorrect（Found the answer!）

[Sui_Gu]

The specular of glass on the mirror is incorrect.The superposition algorithm is wrong.

(The label has been unchecked opaque)

We found the answer.

Maybe that's the reason

Arnold calculates the object first and then HDR, which results in the superposition problem

HDR is not involved the IOR in the specular, so it is impossible to get the correct image. It is necessary to turn off the specular in HDR

Or Transparency Depth ≤ 1

And Emission can get the correct IOR in the specular