How can I calculate final rendered image of Material Model?

[JiyouSeo]

Hello,

I want calculate final rendered image of Material Model, So I refered to the code below, I calculated final rendered image like it https://github.com/zju3dv/InvRender/blob/d9e13d8e5337e4df363238fddf90f2038e792e7c/code/model/loss.py#L101 Is it correct?

Thank you