No one has responded to this and it is old enough that I am sure its been fixed, but I randomly came across this myself.

I resolved it, and it ended up being that I had my AR camera and some game objects sharing the same position on the scene (0,0,0) and the camera didn't have a rendering layer so it was rendering the underside of the gameobject. You can set a rendering layer, or just move the AR camera and it will stop this from happening.

Hi,I am using unity 5.5.1f1 and have used AR camera but no image target ,my object is not showing in front of device camera when i enable that feature "Device Tracking".Object is showing slightly in the oppsit direction i move the camera into in androi5.0 only.

Is there any code of line to add to make it in position.

Thanks  

i have this problem. Unchecked the Automatic Graphix API, removed the openGLES3 and ... voila!! all its OK ...

but the posibilities of openGLES3 for the smart terrain apps are dissapeared too..

1.

If you are using Unity 5.0.1 or 5.0.2, make sure to upgrade to at least to 5.0.3 or 5.0.4.

2.

If you are using Unity 5.1.0, make sure to upgrade to at least to Unity 5.1.1.

3.

Also, in Unity 5.1.x you need to check the Android Player Settings > Other Settings >disable the "Automatic Graphics API" checkbox and remove the OpenGL ES 3.0 from the Graphcis API dropdown list;

you need to have OpenGL ES 2.0 only included .

See also:

https://developer.vuforia.com/forum/unity-3-extension-technical-discussion/vuforia-42-and-unity-5

Hi,

I'm having the same problem. On my webcam my project works fine, but when I build Android project and deploy it to Nexus 9 my screen is half black and half is just one color. That doesn't happen when I have the same project running on Lenovo tablet. However, on Lenovo tablet I have another problem - it recognizes TargetImage and makes it's children visible, but the colors are strangly modified (e.g. I have white UI image and black text in my project and on tablet it's green UIimage and text is sometimes red, sometimes blue, sometimes yellow...)

Thanks

I had this, not sure why or what the cause was.  But there was something wrong with my ARCamera.  I removed it, recreated it and it worked fine

cheers