HDRP SRP reflection probe resolution

Unity Engine
1

The reflection probe resolution in 2018 using HDRP SRP is set to 128, using Unity standard render assets, this is adjustable giving my mirror materials a crisp clean reflection. Using the HDRP SRP, i cannot adjust it at all and its stuck on 128 giving unclear funky, blocky reflections. What can I do to correct this?

2

I am having the same issue with HDRP. I found the Reflection Cube Map size parameter in the Pipeline Asset but it doesn’t seem to be improving the resolution of my reflections coming from the baked probe. I am using the current 2018.3 release and HDRP 4.6. Anyone find a solution?

3

Thanks for reporting.
This issue is related to the built-in reflection system, and has already been fixed for the 2019.1.x versions of HDRP.
We can’t backport the change in the 2019.3.x version since it relies on C++ code change, but here is a workaround:
With the probe selected, enable the inspector debug mode, and change the reflection probe resolution manually from here.
We might be able to push an automation using this workaround in the next HDRP release for 2018.3.x.

4

Thanks for the info Remy. Not sure if this makes any sense but I found a solution after noticing that other scenes were not having this issue. After a lot of fiddling I found that deleting the probe from my broken scene and paste the working scene’s reflection probe into my broken scene that pasted reflection probe bakes at the desired resolution.

I just tried your workaround, it worked great, a much smarter solution. Thanks again!

5

The same issue exists with the Planar Relection as well, but cant be fixed with the provided fix since the resolution parameter doesn’t exist.

6

Is this issue fixed?
I have exactly the same issue in Unity 2020.1.0.f1 with HDRP 8.2.0.
The setting changing resolution of planar reflection probes in HD asset does not affect anything.
Also setting resolution of planar reflection by scrip does not affect anything.

As a result, in runtime I have to make instance of a pre-made mirror prefab to create mirrors which has been set with the debug mode workaround…