NEED HELP! depth texture intersection highlight shader on mobile android

So, I took this shader and added it to a game I'm making.
https://chrismflynn.wordpress.com/2012/09/06/fun-with-shaders-and-the-depth-buffer/

I love it and it works really great in the editor. But, I want to use this effect in a mobile game. On my android devices it looks all wrong. :''(
editor: this is correct - the intersecting outline follows the terrain and objects it intersects with

android: it appears as weird diagonal lines along the plane the material is used on (tested with note 2 and galaxy s6 - same results)


I'm new to shaders and I've been learning them so I can debug this issues. But, I just can't figure out why it works this way on android.

 

Problem solved!!

After a week of racking my brain I found and bought this asset.
https://www.assetstore.unity3d.com/en/#!/content/47893

it saved me a ton of time and headache! I had to mess around with it a bit, but I finally got it to work the way I needed on mobile. (Actually, it works out of the box, but you have to mess with camera clip planes a bit to make them look right on mobile.)



Here's a rundown.

First off, make sure you have a script on your camera that turns on the depth texture:

Code (CSharp):

1.     [ExecuteInEditMode]
2.     public class TurnOnDepthBuffer : MonoBehaviour
3.     {
4.         // Use this for initialization
5.         void Start()
6.         {
7.             var camera = GetComponent<Camera>();
8.             camera.depthTextureMode = DepthTextureMode.Depth;
9.         }
10.     }

For mobile, the camera that renders objects with this shader needs a relatively high near clipping plane. The image above uses Near = 10 to Far = 1500. (Since it's a pretty high near value I added a second camera to display Near = 1 to Far = 10. It's kind of hackish, but it makes the shader look pro on mobile.) Some more interesting facts: this will work fine with gles 2.0. I ran it on a Note 2 with the correct camera configuration and it works really well. Just make sure your mobile device has the hardware requirements for Depth Textures.
http://docs.unity3d.com/Manual/SL-DepthTextures.html

And, for kicks, here's what mobile looks like when the near clipping plane is a low value, ex: Near = 1. Here the camera is suspended in the air looking at objects at different distances. Objects that are near appear fine. But the ground (which is far away and below) is intersected with a very large cube. Being far away from the camera, it has weird display artifacts. I'm pretty sure this is because of how mobile devices capture their depth texture and the logarithmic nature of their precision.

 

I'm having the same problem but in my case it is Ocen-Sphere that should intersect with a procedural planet, the Near = 10 did fix the problem indeed!! thxxxx for sharing this info.