Bug AR Foundation pre 5.0 and URP Background not rendering

I am using AR Foundation 5.0.0-pre.12, Unity 2022.1.+ and URP 13.1.8 and I am again getting the 'black screen' issue on iOS. This has cropped up before in previous combinations of URP and AR Foundation, and in my case I also get a black screen with AR Foundation 4.2.3 release version.

The camera is running and plane recognition is working, so I know the problem is related to the background rendererer. This thread has screenshots to check all the settings, and I have done that.

Is this a known bug? Are there any ways to workaround this and get background rendering working again?

 

The active pipeline does have the renderer feature, but I do not see any console or log messages for index out of range errors. I selected the 'Balanced' renderer pipeline and removed the AR Background Renderer and then re-installed it a number of times and it makes no difference.

I have noticed the Editor occassionally losing track of the selected pipeline and also occassionally the Editor randomly unchecks the ARKit system. But, even with all those selected/checked, still get a black screen.

I've submitted a bug report – IN-9102

 

2022.2b4 have not fixed this bug yet. Any update on this?

 

But if use After Opaque rendering mode, the image from camera close the opaque geometry from scene

 

I am having the same issue, selecting "After Opaque" occludes the geometry and only the camera view is rendered.

Editor Version: 2022.1.20f1
AR Foundation: 5.0.2 (with After Opaque rendering mode)
URP: 13.1.8

 

The way I solved it was by setting `Depth Texture Mode` to `Force Prepass` in the URP Asset Renderer.
Not sure if this is an official fix.

 

I solve this problem by switch "Render Mode" in ARCameraManager to `After Opaques`
also i check my URP Asset and made sure for values in `Rendering Path` n `DepthTexture Mode` have been a
`Forward` and `After Opaques` too.
Its worked for me.

As i know from this https://docs.unity3d.com/Packages/com.unity.xr.arfoundation@5.0/manual/migration-guide-5-x.html
URP Version 14.0.2 Incompatibility
When using URP version 14.0.2 there is a bug that causes URP to not respect RendererFeature input requests. This means that even though the ARCameraBackground might request for a Camera Depth Texture, URP will not respect this request and the camera background will overwrite geometry.

To workaround this, make sure you are using URP version 14.0.3 or greater.


Editor Version: 2022.2.0b14
AR Foundation: 5.0.2
URP: 14.0.3

 

Any update on a fix? This is a horrible user experience, I also found in 2022.2.1f1 using After Opaques on AR Camera Manager and in the URP asset, actual geometry in the scene would not render and only the background camera would show when in Editor using XR Simulation.

 

Edit: I can confirm this is fixed in 2022.2.3f1 using URP 14.0.4 and AR Foundation 5.0.3, I had to do this to roll back and get it working by reversing the fixes from above:

1. AR Camera Manager - Render Mode set to 'Any'
2. On the URP asset - Rendering > Render Path Forward, Depth priming Disabled (default I think) and Depth Texture Mode: After Opaques

 

Would be neat if the AR Foundation Samples repo used URP or at least had a branch for that

 

Added a bug report for this one: IN-30833

Here's a fun one - with URP in 2022.2.3f1, ARF 5.0.3, URP 14.0.5, if URP Asset > Opaque layer mask isn't set to 'everything' - in this example I was using Render Feature - Render Objects to make stencils and masks for AR portals, the XR Sim background doesn't render.

I am confident that if there was a URP branch, some more of these issues would get caught, especially if we assume that Built-In Render pipeline is going to be deprecated for the upcoming URP/HDRP combo refactor. For now it is a real pain in the ass that we have so many render pipelines and bugs split across them. URP is a godsend for shader graph and renderer features!

 

I have also found with Unity 2022.2.4f1, the XR Simulation Environments render on the M1 Mac Silicon Editor but on Windows Editor the environment renders black and I get this error:

`d3d11: failed to create 2D texture shader resource view id=1928 [D3D error was 80070057]`

I will post back the bug report ID for both these bugs.

IN-30833
and
IN-30822

Bug report id:

In Mac Editor:


In Windows Editor:

 

Bug Report: IN-30822

In Mac Editor:


In Windows Editor:

 

I have identified the root cause of this issue by comparing the projects and copying the User Settings + Project settings asset files over one-by-one with source control. Having colour-space in Project Settings > Player > Other Settings set to Linear instead of Gamma when using Universal Render Pipeline on Windows Editor causes this issue. I will reply with this to the bug report to let QA know. This requires URP in the project.

Most AR scenarios I test are for product visualisation so Linear is a must and obviously I found the layer issue as we work with AR portals and stencil effects from time to time in common AR situations.

 

Is there a release number or date when we should expect to see a fix?
Thank you

 

What the bug report reference to track it? I got the same issue on Unity 2022.2.7f1 (Windows 11) with URP and Linear gamma space. All good on OSx. URP 14.0.6, AR foudnation 5.0.4

Code (CSharp):

1. Cannot create camera background material compatible with the render pipeline
2. UnityEngine.XR.Management.XRGeneralSettings:AttemptInitializeXRSDKOnLoad () (at ./Library/PackageCache/com.unity.xr.management@4.2.0/Runtime/XRGeneralSettings.cs:148)
3. d3d11: Creating a default shader resource view with dxgi-fmt=28 for a texture that uses dxgi-fmt=29
4. d3d11: failed to create 2D texture shader resource view id=2578 [D3D error was 80070057]

Couldn't understand what the reason when sample project worked fine and only my current project had it until found @ROBYER1 answer related to Linear/Gamma space

 

The QA team couldn't understand my bug report and closed it. I have hundreds of accepted bug reports so I know how to write one up and explain it. I couldn't make the report any simpler than I could. At least your team are aware of this as that bug is now closed.

 

Unity team behaves as it always does, I am not surprized at all.
I spent 2 days trying to migrate from 2021.3 to 2022.2 and just hit into couple of critical bugs related to AR Foundation 5.x and URP 14.x, and couldn't solve it. Just downgraded back.

I always have a same feeling updating Unity products - it's the same if you come to car manufacturer official service after hearing about their incredible new model. You get behind the wheel, turn on the ignition, but.... the car is not driving. Checked everything to be sure you didn't miss anything but suddenly realize that there are no 3 wheels of 4!

In other words - looks like Unity release new versions just to keep good reports and show roadmap goal achieved, but when you try these updates you find that COMMON things are not working anymore.

I just can't imaging, how is it possible to release such crap without checking how AR Foundation works with all your URP versions, taking in account that URP is most commonly used pipeline, and AR is the product which still keep a lot of developers to use Unity and don't move to any other IDE.

 

In my case, the screen went black because Unity itself changes the culling mask during play mode. You can see it in the attached video. When the editor is turned off, the "everything" mask is selected. In play mode it turns off automatically.

 

I was referencing IN-30833 bug which is: AR Foundation XR Simulated Environment doesn't show if URP Renerer Opaque Layer Mask isn't set to 'Everything'

That bug report was resolved as: Not Qualified.

 

AR Foundation 4.2.3 version.. Please inform how to do that work in relation to the version. Anybody help me?
I couldn't find the rendering mode "After Opqaue" OR "ARCameraManager.requestedBackgroundRenderingMode = CameraBackgroundRenderingMode.AfterOpaques"

[My version]
Editor version: 2021.3.8f1
AR Foundation: 4.2.3
URP: 12.1.7

I'm sorry if my English was weird.

 

Please provide a stable version as of today using
Unity, URP and AR
Has it ever worked? I need any working version.
Thanks

 

My project is on Unity 2022.2 and can't go any earlier. I've tried seemingly every available combination of ARF + URP versions (the Package Manager seems to only ever make one version of each of these available at a time) and I have tried setting both my ARCameraManager and my renderer to "After Opaques", and I have the ARBackgroundRendererFeature feature added to my universal renderer.

No matter what I do, I can't get the camera background to honor the alpha value and actually be transparent.

Judging by this thread, it sounds like URP is just extremely buggy on AR and this simply doesn't work unless I have some magical combination of Editor + Packages?

What are my options with ARF 5.0.x and URP 14.0.x?

 

@flintml it finally works and I moved from 2021.3 to 2022.3 LTS just week ago.
But to be sure everything will be fine with all the features you use in your project, just do the tests.

 

It turns out I had to disable the HDR option on the pipeline asset. No idea why it was that specifically. What a mess. Anyway, seems to be working just fine now.

 

This is still broken in my current project.
Unity 2022.3.7f1 LTS.
AR Foundation 5.0.7.
URP 14.0.8
Using the URP Empty Sample Template.
I created a simple sample Scene.
Added a AR Session.
Converted the Camera to XRRig (which contains an AR Camera as a child.)
Modified the High-Fidelity URP Renderer Asset to have AR Background Feature.

It just won't show the camera background when running the app on the Phone. The SLAM works just fine and the content is also visible. But the background is just black.

I also checked the permissions, Camera is set.

 

The first time I updated my project from standard to URP, I had the same AR Foundation plane AR issue, there was no video feed. I fixed it by following these steps -> https://forum.unity.com/threads/arf...k-screen-and-no-tracking.915527/#post-6374280
The Render Pipeline Asset under Quality was not referencing the same asset. That fixed my issue.

Then for other reasons I had to revert my project via git. Then I updated the project again to URP, this time it worked and The Render Pipeline Asset was correctly set. I have no idea why, but seems like there might be an issue.

I'm using Unity 2022.3.10 and ARFoundation 5.0.7 and URP 14.0.8