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Black screen after loading the AR scene

February 25, 2017 - 4:36am #1
Topic solved

Hello! I have a problem with loading the AR scene into a project. What I'm doing is:

1. Create the scene with following components:

  • Directional Light,
  • ImageTarget, containing several prefabs,
  • ARCamera.

At this point everything works fine - the image target is being tracked and I see my models.

2. Export the scene into Asset Bundle.

3. In another project, I download the Asset Bundle and use SceneManager.LoadScene() to load the scene.

4. The scene is succesfully loaded, there are no errors, there are logs of Vuforia's succesful initialization and Vuforia starting, but the screen is black. My other observations:

  • TextureBufferMesh in DonDestroyOnLoad correctly shows the texture of my webcam,
  • BackgroundPlane of ARCamera is black (black circle in VideoMaterial),
  • suprisingly, the ImageTarget is being tracked and I see the models, while the screen remains black.



Do I need to do something different during the Vuforia initialization? I tried delaying the Vuforia Initialization and then initializating in Start() of the script attached to ARCamera, but that doesn't change anything.

veit270
Joined:
January 11, 2017
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Black screen after loading the AR scene

January 21, 2022 - 4:44am #10

My fault, sorry! You should only target ARM64. I edited my answer and also created a technical article to help solve the issue.

 

Kind regards,

Patrick Scheper

Technical Community Manager

pscheper
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June 13, 2019
Posts: 765
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Black screen after loading the AR scene

January 20, 2022 - 3:55am #9

"This is done by changing the Mono scripting backend to IL2CPP and target both ARMv7 and ARM64 architectures."





Then I get a message that says:

"ARMv7 is not compatible with the ARCore version included when using the "Include ARCore Library" option in the VuforiaConfiguration. To use an older version of ARCore which supports ARMv7, please include ARCore manually in your project instead."

peacepunx
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November 4, 2020
Posts: 4
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Black screen after loading the AR scene

January 18, 2022 - 7:26am #8

Hey everyone,

 

If you're experiencing a black screen in 2021 and later it might be related to Google removing ARCore support for 32-bit apps on 64-bit devices. Please read here: https://developers.google.com/ar/64bit

You should make sure you build your app as well for 64-bit devices. This is done by changing the Mono scripting backend to IL2CPP and target the ARM64 architecture. I wrote a technical article to make it easier to understand the issue and how to solve it.

I hope that helps.

 

Kind regards,

Patrick Scheper

Technical Community Manager

pscheper
Joined:
June 13, 2019
Posts: 765
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Black screen after loading the AR scene

April 22, 2020 - 7:23pm #7



Final work!  My Screen is not Pink in Model Target finally .

i have tried these methods .

 1. i remove post processing in the ArCamera



 2. used  OpenGLES3 first , second is Metal  in  Other Setting .



*3. add an arcamera in your firstScene but not active (i think this answer is close to the solution)



4.reinstall Vuforia SDK in package manager

if someone have face the same problem , please let me know 

elsonhao
Joined:
September 20, 2019
Posts: 2
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Black screen after loading the AR scene

April 20, 2020 - 1:44am #6

Hi , did you Solved the problem ?



i use Model target , and Vuforia 8.6.7 ,unity 2019.2.6f1 , got similar problem . 

in ios Device , i use  SceneManager.LoadSceneAsync(name); assetbundle cannot load success , but show the load scene , and screen is pink , Model target still can worked ! 

but i work fine in unity mac editor .

Can you help me thank you ?

elsonhao
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September 20, 2019
Posts: 2
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Black screen after loading the AR scene

August 13, 2019 - 5:30am #5

Thanks!

This is working for me.

I changed Graphics settings from Open GL 3.0 to Open GL 2.0 and application working.

simaggin
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October 17, 2015
Posts: 2
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Black screen after loading the AR scene

June 30, 2018 - 2:01pm #4

I was having the same problem but even farther from figuring out what was going wrong. I then saw veit270's post about the ARCamera working when it is the first scene after the Unity splash screen and try that. IT FINALLY WORKED! I then was able to create a work around for this problem by putting the ARCamera on the first scene and making a script do a DoNotDestroyOnLoad(ARCamera) for the ARCamera GameObject. I then can load my scene I want and the camera is NO LONGER BLACK. Make sure you make the ARCamera some kind of singleton so DoNotDestroyOnLoad(ARCamera) only gets called once or you will have multiple ARCameras in your scenes and funky things start happening.

Milnip
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April 4, 2018
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Black screen after loading the AR scene

June 13, 2018 - 8:25pm #3

Same problem. Any answers?? 

playottiya
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March 20, 2018
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Black screen after loading the AR scene

May 24, 2017 - 4:24am #2

This is a rendering issue since long in vudoria sdk. just change the graphics in (File>Build>Player settings> Other Setting> Graphics) to Open Gl 2.0 and it should be solved.

summitgames
Joined:
October 30, 2014
Posts: 2
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