Get current scene luminance

Development Rendering
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1

There is a blueprint node to get this value?

2

anyone? I want to get the value of scene luminance, to change a parameter on a material (ex. bright scene → low emissive - dark scene → high emissive)

bye

3

I’m also looking for this.
I watched in deep the engine and I didn’t get any easy solution.
I just maybe understood this was calculate in a shader.

4

I’m also looking for this.
I watched in deep the engine and I didn’t get any easy solution.
I just maybe understood this was calculate in a shader.

5

I’m also looking for this.
I watched in deep the engine and I didn’t get any easy solution.
I just maybe understood this was calculated in a shader.