Extremely bright RT reflections in 7.5.3

Unity Engine
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1

  1. New HDRP 7.5.3 project with 2019.4.20f1.

  2. Fix All for DXR.

  3. SampleScene.unity

  4. Creat a Sphere, assign a material with Metallic 1 and Smoothness 1.

  5. Disalbe all Reflection Probes.

  6. New Global Volume.

  7. New Profile.

  8. Add Override > Lighting > Screen Space Reflection > enable RT.
    [Result]
    The sphere is extremely bright.

  9. Open the project in 2020.2.5f1 and update to HDRP 10.3.1.
    [Result]
    Good.

Thanks.

2

It’s probably some exposure issue (we’ve had those on RT reflections many times in past).

But do you really need RT on 2019.4? I mean RT even on newest HDRPs is still experimental and it’s definitely not great on the first version (2019.4). Unity hasn’t worked on the raytracing updates for that version for a long time now.

If you really want to use raytracing, I’d recommend bleeding edge Unity version as that’s where the RT improvements land.

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3

With newer Unity, I simply lose Enlighten realtime GI, which has decent effect and cost.

4

Enlighten support has been added back but it’s not yet in versions we get through Unity Hub: https://github.com/Unity-Technologies/Graphics/pull/3385

But this does mean it will be available in future 2021.2 alphas / betas.

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