Gear VR - eyeTextureResolutionScale not effective

Using 2017.2.0f3 and building for Gear VR. Imported a project from 5.5
I am seeing a discrepancy in aliasing on 3d objects using

UnityEngine.XR.XRSettings.eyeTextureResolutionScale = 1.5f;

when compared to the old VRSettings.RenderScale in 5.5.

Aliasing on 3D objects is much more evident in 2017, even with 8xMultisampling in Quality settings, while in 5.5 there is no aliasing around the same objects.

I've tested the TextureResolutionScale back at 1.0f and it is doing something.
Also enabled Resolution Scaling in Settings and played around with target pixel density, but it didn't change anything.

Couldn't find anything about a known issue, but may be missing something. Anyone come across the same behaviour?

 

Possible the difference is related to the Linear vs Gamma space settings?

I believe MSAA resolve in linear space looks a lot better than doing it in gamma space.

 

Tried Linear space setting but aliasing remained.
Now tested 2017.3f1 and same issue. 5.5.3f1 has no issue

I use a start scene with a script attached that increases render scale to 1.5, then loads the next scene

In 5.5.3f1:

Code (CSharp):

1. void Start () {
2.         UnityEngine.VR.VRSettings.renderScale = 1.5f;
3.         SceneManager.LoadScene(1);
4.     }

In 2017.3.1f1

Code (CSharp):

1. void Start () {
2.         UnityEngine.XR.XRSettings.eyeTextureResolutionScale = 1.5f;
3.         SceneManager.LoadScene(1);
4.     }

Allow MSAA is checked on the camera. Forward rendering is being used. I also used the script on the main scene but no chnage.It just appears there's no aliasing applied.
Any other settings I should check when building for Gear VR in 2017 or some other issue?

 

Thanks for looking into it. Will post to the other forum.

 

In the end it was related to AA settings which needed to be coded in as setting anything in the Quality settings had no effect. Code used
QualitySettings.antiAliasing = 4;