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[HDRP] GameObjects don't receive constant lighting with Point Light

Package: Scriptable Render Pipeline HD


How to reproduce:
1. Open the user's attached ""
2. Open the "SampleScene" Scene
3. Double click the "Sphere" GameObject in the Hierarchy window
4. Move Scene view camera with the Move tool around the "Sphere" GameObject in the Scene view (See attached "1279209_repro.mp4")
5. Observe the "Sphere" GameObject in the Scene view

Expected result: "Sphere" GameObject receives constant lighting in the Scene view
Actual result: "Sphere" GameObject lighting fades in the Scene view

Reproducible with: 4.10.0-preview (2018.4.27f1), 7.5.1 (2019.4.11f1), 8.2.0 (2020.1.6f1), 10.0.0-preview.27 (2020.2.0b3)

- The issue is not reproducible with the built-in pipeline
- The issue is not reproducible with URP

  1. Resolution Note:

    Point and Spot Lights have a fading factor when they are too far from the camera. When the Light's distance to the camera is lesser than the fadeDistance parameter then the light does not fade (such as the gameview suggests). Starting at 90% of that distance, the fade will start and over it, the light will have no more influence on the lighting of the scene - this is what happens when you are scrolling further from the sphere (as you are also scrolling away from the Light source).


    Only Directional Lights won't fade based on the distance to the Camera.

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