What is scene color node actually supposed to be on HDRP?

If I take a grey terrain and put a transparent plane over it, with a shader graph that just has scene color node applied to base color, instead of the plane being the same color as the item below it, it kinda has a red tint. Why is this? What does the scene color reoresent in HDRP if not the color before it draws the pixel?

is there some other magic I need to do in HDRP to make this work?

 

Sorry i have already tried both nodes. i get how to make it transparent, just that i cant get rid of this red tint (see attached pic) and i don't know why...

 

My past attempts at getting Scene Color to work also seemed to have the pixels be not quite the right color. Maybe you need an exposure adjustment, like this post describes?

https://forum.unity.com/threads/any-examples-of-scene-color-being-used.717635/#post-6114656

 

i dont understand what this post means to me. are you acknowledging the problem in HDRP? my object isn't casting a shadow. but i see in that GIF that as soon as the HD Scene color is applied, the cube itself gains a red tint, the exact problem i'm having.

 

no, its set to fixed and 0, no compensation, adjusting this in any way does not stop the red tint. auto exposure does not stop it. i tried the shader graph linked above with scene color and HD scene color and it still has the red tint.

 

Its a good call. I don't have a sun or directional light, the scene is at night, however the plane is lit by two 5000K area lights nearby.

If I use an Unlit master node then the color looks mostly as expected without the tint, but I lose the normal map, which is why I'm using a Lit shader in the first place.

So the lights are what's causing it, but why is there a red tint on it and not on the surface below, they are lit by the same 5000k light, only one shader has the scene color node and one doesn't.