Unity Terrian Billboard Grass vanishes on camera distance

Do you have ever had the situation that your unity billboard terrain grass vanishes on distance ?
Only be visible on close camera distance ?

I have had the same issue !

Everytime the camera to grass distance gets greater all billboard grass objects vanishes and are only visible on very close distance.

Then i have found a solution for this situation.

I have previously imported the grass billboard textures with this import settings:



Then i have changed the import settings:

Important the 'Generate Mip Maps' option must be unchecked !



Additional you can set 'Detail Distance' to 250 and 'Detail Density' to 1.

 

'Detail Distance' and it's influence on the unity grass:

 

'Detail Density' at it's influence on the unity grass:

 

With this little sketch can you set the grass wavy speed and strength:

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class WindSettingsForTerrainGrass : MonoBehaviour
5. {
6.     [Header("Terrain:")]
7.     public Terrain terrainObject;
8.  
9.     [Header("Terrain Grass Wavy Speed:")]
10.     public float grassWavySpeed;
11.  
12.     [Header("Terrian Grass Wavy Strength:")]
13.     public float grassWavyStrength;
14.  
15.     void Start ()
16.     {
17.         if (grassWavySpeed < 0.0f)
18.             grassWavySpeed = 0.0f;
19.         else if (grassWavySpeed > 1.0f)
20.             grassWavySpeed = 1.0f;
21.         if (grassWavyStrength < 0.0f)
22.             grassWavyStrength = 0.0f;
23.         else if (grassWavyStrength > 1.0f)
24.             grassWavyStrength = 1.0f;
25.         terrainObject.terrainData.wavingGrassSpeed = grassWavySpeed;
26.         terrainObject.terrainData.wavingGrassStrength = grassWavyStrength;
27.     }
28. }