Bug Planar reflection probe not working in VR

EDIT : Ticket issue to upvote :
https://issuetracker.unity3d.com/is...s-misaligned-for-both-eyes-when-vr-is-enabled

Hello there !
So i've been playing with realtime planar reflection prob as a mirror alternative for VR, and so far, it doesn't work as intended.
You can see in the 2nd attached picture that my reflected finger is too much on the left, for my left eye (and for my right eye, the finger is reflected too much on the right). I bet the reflection doesn't take in account the stereo position of the eyes. So it makes it unusable in VR.

I'm using unity 2019.4.17f1 with HDRP 7.5.3

You can also see in the first screenshot that the reflection is just wrong too for the whole mirror. I am left with no way of making a mirror on HDRP, since shadergraph doesn't allow the keywords unity_CameraProjection in custom nodes.

That would come handy to have this fixed !

 

Here the issue appear better :

 

So actually I believe it's because the render for the reflection prob happens right in the middle. So it is incompatible with VR. It should be rendered twice when the camera is VR, but it isn't. Is that a bug, or it is just not supported at all ?

 

Up, any news about fixing this issue in futur versions of HDRP ?

 

Future version? it's version 12 now, and you're on 7. Is it fixed already?

 

Also Unity doesn't usually fix bug report posts. They can ignore it or never see it. If you want something fixed or for Unity to TELL you how to fix it, make a bug report via the editor. Usually, Unity will email back with details.

 

So on unity 2021.2.0b7.3246 on HDRP 12.0.0 the VR still do not work with the planar reflection probe



We can see clearly that in the scene view (On top) the cylinder hit the "mirror" in the middle.
While in VR, using the mock HMD from the XR Plug-In management there is an offset in the positions, leading to a wrong stereoscopic issue.

How should I proceed to create an issue ticket ?

 

https://support.unity.com/hc/en-us/articles/206336985-How-do-I-submit-a-bug-report-

You can submit a bug report in the Editor by following these steps below:

1. Click on Help and select Report a bug from the drop-down menu.
2. Specify from the drop-down menus what the problem is related to and how often this happens.
3. Enter a valid email address and complete the title and description fields.
4. Finally, click Send to submit your bug report.

Once you've done this you can leave the case number in the thread to in case a dev is interested in commenting. Unity will get back in touch by email. Letting it upload a small reproduction project is best.

And perhaps @SebLagarde will already know

 

Alright I posted the issue :

 

So the bug has been properly reproduced by the Unity Team and added to the issue tracker.
You can vote for this issue here :
https://issuetracker.unity3d.com/is...s-misaligned-for-both-eyes-when-vr-is-enabled

 

Is this only an HDRP issue? Is there a solution for Planar Reflections in URP?

 

Planar Reflection Probe is an HDRP feature, it doesn't exist on URP.
You have some mirror tools for URP-VR on the asset store like this one :
https://assetstore.unity.com/packages/vfx/shaders/urp-lwrp-mirror-shaders-135215
Here is also a free alternative for multi pass :
https://unitylist.com/p/xp6/Unity-URP-Mirror-Shader