[Solved] Google Cardboard - Screen Distortion is wrong

Hy,
I'm playing around with the Google Cardboard SDK und tried to build an Android app for my Sony Xperia Z1 Compact. When testing in editor everything looks fine, but after deploying to my phone the distortion looks kind of weird. :/

This is a picture of how it should be:


And this is how it looks on my phone:


Is the display size (4.3 inches) too small? The Cardboard app itself and other VR apps (e.g. DiveCityCoaster) are working properly. Only the Unity Cardboard SDK produces such a strange image. I did not change anything in the demo scene provided by Google. https://developers.google.com/cardboard/unity/download

Pls help!

Best regards,
Max

 

And again, I found the error a few hours after posting this thread. It's not perfect, but way better than before.

First of all i measured my phone and created a new profile for my phone in CardboardProfile.cs

Code (CSharp):

1.  
2.   /// Some known screen profiles.
3.   public enum ScreenSizes {
4.     XperiaZ1Compact,
5.     Nexus5,
6.     Nexus6,
7.     GalaxyS6,
8.     GalaxyNote4,
9.     LGG3,
10.     iPhone4,
11.     iPhone5,
12.     iPhone6,
13.     iPhone6p,
14.   };
15.  
16.   /// Parameters for a Nexus 5 device.
17.   public static readonly Screen XperiaZ1Compact = new Screen {
18.     width = 0.095f,
19.     height = 0.055f,
20.     border = 0.001f
21.   };
22.  
23. // ...
24. /// Returns a CardboardProfile with the given parameters.
25.   public static CardboardProfile GetKnownProfile(ScreenSizes screenSize, DeviceTypes deviceType) {
26.     Screen screen;
27.     switch (screenSize) {
28.       case ScreenSizes.XperiaZ1Compact:
29.         screen = XperiaZ1Compact;
30.         break;
31.       case ScreenSizes.Nexus6:
32.         screen = Nexus6;
33.         break;
34.       case ScreenSizes.GalaxyS6:
35.         screen = GalaxyS6;
36.         break;
37.       case ScreenSizes.GalaxyNote4:
38.         screen = GalaxyNote4;
39.         break;
40.       case ScreenSizes.LGG3:
41.         screen = LGG3;
42.         break;
43.       case ScreenSizes.iPhone4:
44.         screen = iPhone4;
45.         break;
46.       case ScreenSizes.iPhone5:
47.         screen = iPhone5;
48.         break;
49.       case ScreenSizes.iPhone6:
50.         screen = iPhone6;
51.         break;
52.       case ScreenSizes.iPhone6p:
53.         screen = iPhone6p;
54.         break;
55.       default:
56.         screen = Nexus5;
57.         break;
58.     }
59.     Device device;
60.     switch (deviceType) {
61.       case DeviceTypes.CardboardMay2015:
62.         device = CardboardMay2015;
63.         break;
64.       case DeviceTypes.GoggleTechC1Glass:
65.         device = GoggleTechC1Glass;
66.         break;
67.       default:
68.         device = CardboardJun2014;
69.         break;
70.     }
71.     return new CardboardProfile { screen = screen, device = device };
72.   }
73.  

Finally on the CardboardMain object set Screen Size to your device and Device Type to Google Tech C1 Glass. This is the best approach to VR with a smaller phone, without creating a new VR profile. Further you have to adjust & align your phone very carefully into your cardboard device. Even the slightest error in position could ruin the immersion!!!



Best regards,
Red_Dragon

 

Where do i find CardboardProfile.cs?

 

Google changed the name from Cardboard to GoogleVr and all scripts were also changed. You have to look for GvrProfile in the GoogleVR/Scripts folder.

I tried a few phones on the new GoogleVR and I think the cardboard pairing works better now, so the need for a new profile is no longer given.