Resolved Emission node doesn't do the same as HDRP/Lit emission setting

Hi Shader Graph team,

Maybe I did something wrong, but I discover a problem where my emission node simply doesn't behave the same as HDRP/Lit's Emission settings, they are both set to following:

- Same color input (in SG case I just sample the same emission texture).
- Intensity Input: 15
- Exposure Weight Input: 1
- Intensity Unit: EV100
- Normalize Color: checked

HDRP/Lit result looks correct:



Shader Graph emission node looks wrong, very wrong.



Did I do something wrong here? This is really my first time seeing this problem exists, I am on Unity 2019.4.16f1 and HDRP 7.5.2

 

Oh man, it's because of the "Normalize Color"!

I don't know what it does but it certainly is not what I expected.

(No wonder it is not documented even in latest version)

https://docs.unity3d.com/Packages/com.unity.shadergraph@10.3/manual/Emission-Node.html?q=emission

 

I think It is for cases when you need to produce emission in LDR. Can not say what is the cases exactly but definitely for them